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Articoli di riviste sul tema "Annealing. microstructure"

Autore: Grafiati

Pubblicato: 19 ottobre 2024

Ultima modifica: 31 luglio 2025

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1

Li, Zhuang, Zhen Zheng, Da Tong Qiu, et al. "Effect of Overaging Temperature on the Mechanical Properties of Ultra-High Strength Multiphase Steel." Applied Mechanics and Materials 556-562 (May 2014): 249–52. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.249.

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Overaging after intercritical annealing of ultra-high strength multiphase steel was conducted in a continuous annealing simulator of the laboratory. The effect of overaging temperature on the mechanical properties of multiphase steel has been studied by observing the microstructural evolution during overaging. The results have shown that multiphase microstructures containing ferrite, martensite, bainite and retained austenite were obtained by overaging treatments after intercritical annealing in ultra-high strength steel, and overaging temperatures affected all constituents of the microstructu

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2

Arruabarrena, Jon, and Jose M. Rodriguez-Ibabe. "Enhancement of the AISI 5140 Cold Heading Wire Steel Spheroidization by Adequate Control of the Initial As-Rolled Microstructure." Metals 11, no. 2 (2021): 219. http://dx.doi.org/10.3390/met11020219.

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The effect of the initial microstructure and soft annealing temperature on cementite spheroidization and microstructure softening is studied on an AISI 5140 hot-rolled wire. In coarse pearlite microstructure (λ: 0.27 μm), the cementite spheroidization progresses slowly under subcritical treatment, and the microstructure does not achieve the minimum G2/L2 IFI rating defined in the ASTM F2282 to be used in cold forming operations under any of the annealing treatment studies. Fine pearlite (λ: 0.10 μm) and upper bainite microstructures are more prone to spheroidization, and the minimum G2/L2 IFI

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3

Scheriau, Stephan, Thomas Schöberl, Siegfried Kleber, and Reinhard Pippan. "Recrystallization and Grain Growth Behavior of SPD Deformed 316L Stainless Steel." Advanced Materials Research 89-91 (January 2010): 491–96. http://dx.doi.org/10.4028/www.scientific.net/amr.89-91.491.

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The microstructural evolution, the changes in microhardness and the recrystallization behavior of a modified 316L stainless steel were investigated during high pressure torsion (HPT) and subsequent annealing. To study the impact of the governing process parameters on the evolving microstructures, the applied strain, the strain path and the annealing temperatures were varied. In contrast to ordinary single phase steels, which showed a decrease in the structural size ending in a saturation of the microstructural refinement between an equivalent strain eq of 10 and 15, HPT of the modified 316L r

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4

Sun, Yangyang, Hui Chang, Zhigang Fang, et al. "Study on Microstructure and Mechanical Properties of Low Cost Ti-Fe-B Alloy." MATEC Web of Conferences 321 (2020): 11029. http://dx.doi.org/10.1051/matecconf/202032111029.

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Microstructure evolution and mechanical properties of low cost Ti-2Fe-0.1B alloy under different heat treatment were studied. Results indicated that two kinds of equiaxed microstructures with different characteristics were obtained in conventional and double annealing, and typical lamellar microstructure was obtained in β annealing. Tensile test results shown that as-received rolled alloy possess highest strength and plasticity simultaneously due to fine and entangled microstructure. Uniform equiaxed dimples were observed in microstructure, which revealed ductile fracture morphology. Key words

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5

Terada, Daisuke, Bo Long Li, Masaaki Sugiyama, and Nobuhiro Tsuji. "Low Temperature Recrystallization of High Purity Iron Severely Deformed by ARB Process." Materials Science Forum 558-559 (October 2007): 357–62. http://dx.doi.org/10.4028/www.scientific.net/msf.558-559.357.

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Recrystallization behavior of SPD processed high purity iron was studied. The 99.95% iron sheet was deformed by the accumulative roll-bonding (ARB) process up to 8 cycles (equivalent strain of 6.4) at ambient temperature. Subsequently, the ARB-processed specimens were annealed for 1.8ks at various temperatures from 300°C to 500°C. The microstructures of these specimens were characterized by TEM and SEM/EBSP. The microstructure of the as-ARB-processed specimens showed the lamellar boundary structure elongated along RD, which was the typical microstructure of the ARB-processed materials. The mea

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6

Nasiri, Z., and H. Mirzadeh. "Spheroidization heat treatment and intercritical annealing of low carbon steel." Journal of Mining and Metallurgy, Section B: Metallurgy 55, no. 3 (2019): 405–11. http://dx.doi.org/10.2298/jmmb180813033n.

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Spheroidization annealing of low carbon steel and its effects on the microstructure and mechanical properties of dual phase (DP) steel were studied. It was revealed that the reduction in strength and hardness of the quenched martensitic microstructure was much more pronounced compared to the fully annealed ferritic-pearlitic banded microstructure with spheroidizing time. This was related to the confinement of spheroidized carbide particles to distinct bands in the latter, and the uniform dispersion of carbides and high-temperature tempering of martensite in the former. During intercritical ann

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7

Wu, Gui Lin. "Recrystallization Microstructure and Texture of Highly Strained Commercial Purity Aluminium Alloy." Materials Science Forum 783-786 (May 2014): 282–87. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.282.

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The microstructural and textural evolutions during annealing of a highly strained (ε=4.0) commercial purity aluminium (AA1200) were followed by electron backscatter diffraction (EBSD). Boundary spacings were analyzed for crystallites of different crystallographic orientations. It was found that initially during the annealing the microstructural evolution is dominated by recovery of the highly strained microstructure, while later the microstructure consists of identifiable grains nucleating and growing at the expense of deformed and recovered matrix. No much texture change occursduring early st

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8

Liu, Mu Lin, Naoki Takata, Asuka Suzuki, and Makoto Kobashi. "Inhomogeneous Microstructure and its Thermal Stability of AlSi10Mg Lattice Structure Manufactured via Laser Powder Bed Fusion." Materials Science Forum 1016 (January 2021): 826–31. http://dx.doi.org/10.4028/www.scientific.net/msf.1016.826.

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The inhomogeneous microstructure and its change by annealing for an AlSi10Mg lattice structure with a body-centered cubic unit cell additively manufactured via laser powder bed fusion (LPBF) were investigated. The as-built lattice structure exhibited a cellular microstructure consisting of a number of primary α-Al phases decorated with α-Al/Si eutectic structure. The developed microstructure varied depending on the locations of the node and strut parts of the lattice structure. At the location near the bottom surface of the node part, the cellular microstructure became coarser and more equiaxe

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9

Yan, Bin, Hongbo Li, Jie Zhang, and Ning Kong. "The Effect of Initial Annealing Microstructures on the Forming Characteristics of Ti–4Al–2V Titanium Alloy." Metals 9, no. 5 (2019): 576. http://dx.doi.org/10.3390/met9050576.

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In this study, the effect of initial annealing microstructure of Ti–4Al–2V (TA17) alloy on forming characteristic was studied, so as to provide a basis for quality control of plastic forming of titanium alloy parts. The titanium alloy always undergoes annealing treatment before forming, due to different microstructures present different mechanical properties. The TA17 with different microstructures are obtained by means of various annealing treatment temperatures. The tensile behavior of TA17 is investigated at room temperature and 900 °C under constant strain rate of 0.01 s−1. The experimenta

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10

Steineder, Katharina, Daniel Krizan, Reinhold Schneider, Coline Beal, and Christof Sommitsch. "The Effects of Intercritical Annealing Temperature and Initial Microstructure on the Stability of Retained Austenite in a 0.1C-6Mn Steel." Materials Science Forum 879 (November 2016): 1847–52. http://dx.doi.org/10.4028/www.scientific.net/msf.879.1847.

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The effects of the intercritical annealing temperature and initial microstructure on the stability of retained austenite were investigated for a 0.1C-6Mn (wt-%) steel. Medium-Mn transformation-induced plasticity (TRIP) steels exhibit a strong dependence of their mechanical properties on the variation of intercritical annealing temperature. This behavior is strongly linked to the amount and stability of the retained austenite. Thus, interrupted tensile tests were used to examine the effect of annealing temperature on the stabilization of the retained austenite. Detailed microstructural investig

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11

Zhao, Yan Chun, Wen Long Ma, Xiao Peng Yuan, et al. "Influence of Annealing Treatment on Microstructure and Mechanical Properties of Fe-Cu-Si-Al Amorphous Composites." Materials Science Forum 849 (March 2016): 71–75. http://dx.doi.org/10.4028/www.scientific.net/msf.849.71.

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In this study, the bulk amorphous alloys with 3mm in diameter were prepared at different voltages adopting copper mould suction casting method by adding microelement Al to Fe-Cu-Si based amorphous alloy respectively. The microstructures, glass-forming ability, mechanical compressive properties of (Fe0.34Cu0.47Si0.19)95Al5 amorphous composites annealed in different temperature were investigated. The results showed that re-melting of master alloy refined the solidified microstructure and homogenize the composition and microstructure. Moreover, the microstructure was stable with the increase of r

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12

Fan, Y., W. Tian, Y. Guo, Z. Sun, and J. Xu. "Relationships among the Microstructure, Mechanical Properties, and Fatigue Behavior in Thin Ti6Al4V." Advances in Materials Science and Engineering 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/7278267.

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The microstructures of Ti6Al4V are complex and strongly affect its mechanical properties and fatigue behavior. This paper investigates the role of microstructure on mechanical and fatigue properties of thin-section Ti6Al4V sheets, with the aim of reviewing the effects of microstructure on fatigue properties where suboptimal microstructures might result following heat treatment of assemblies that may not be suited to further annealing, for example, following laser welding. Samples of Ti6Al4V sheet were subjected to a range of heat treatments, including annealing and water quenching from tempera

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13

Khorasani, AmirMahyar, Ian Gibson, Moshe Goldberg, and Guy Littlefair. "On the role of different annealing heat treatments on mechanical properties and microstructure of selective laser melted and conventional wrought Ti-6Al-4V." Rapid Prototyping Journal 23, no. 2 (2017): 295–304. http://dx.doi.org/10.1108/rpj-02-2016-0022.

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Purpose The purpose of this study was to conduct various heat treatments (HT) such as stress relief annealing, mill annealing, recrystallization (α + β) annealing and β annealing followed by furnace cooling (FC) that were implemented to determine the effect of these on mechanical properties and the microstructure of selective laser melted and wrought samples. The mentioned annealings have been carried out to achieve the related standards in the fabrication of surgery implants. Design/methodology/approach In this paper, based on F2924-14 ASTM standard SLM and conventionally wrought parts were p

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14

Vayrette, Renaud, Christian Rivero, Sylvain Blayac, and Karim Inal. "Thickness Effect on Microstructure and Residual Stress of Annealed Copper Thin Films." Materials Science Forum 681 (March 2011): 139–44. http://dx.doi.org/10.4028/www.scientific.net/msf.681.139.

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In this work, coupled effects of thickness and annealing temperature on both microstructure and residual stress of electroplated copper thin films are studied. Microstructure is investigated by Electron Backscattered Diffraction (EBSD) and residual stress is estimated from samples curvature. All films exhibit highly twinned grains. Except for several microns films, median crystallite size grows with both film thickness and annealing temperature. Concerning residual stress, it decreases, first as the increase of film thickness, and secondly as the decrease of annealing temperature. The comparis

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15

Lee, Jong Chul, Ui Gu Kang, Chang Suk Oh, Sung Joon Kim, and Won Jong Nam. "Effects of Deformation Strains and Annealing Temperatures on Mechanical Properties of Martensitic Steels." Materials Science Forum 654-656 (June 2010): 218–21. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.218.

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The effects of deformation strains and annealing temperatures on microstructures and mechanical properties of martensitic steels were examined. The amount of cold deformation was changed as 30%, 50% and 60%, and annealing temperatures varied from 500°C to 600°C. In samples cold rolled 30%, the dominant microstructure for an annealing at 500°C was dislocation substructures with uniformly distributed rod-shaped carbide particles. For an annealing at 600°C, the microstructure consisted of equiaxed ultrafine grains, spherical carbide particles and elongated dislocation substructures. A proper anne

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16

El-Bediwi, Abu Bakr, Eman Kashita, and Salah M. M. Salman. "Influence of Annealing on Creep Indentation, Surface Properties and Electrochemical Corrosion Behavior of Ni-Cr Based Dental Alloy." International Journal of Applied Sciences and Biotechnology 5, no. 3 (2017): 366–74. http://dx.doi.org/10.3126/ijasbt.v5i3.18295.

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Heat treatment is a process in which alloy is heated to get different microstructures and desired properties associated with it which may affect the corrosion rate, nature form and size. Effect of annealing on microstructure, creep indentation, hardness and electrochemical corrosion behavior of Ni63Cr24.6Mo10.8Si1.5Mn0.06C0.04 alloy were investigated. Microstructure of Ni63Cr24.6Mo10.8Si1.5Mn0.06C0.04 alloy changed after annealing at different temperature for two hours. Crystal size of nickel in matrix alloy increased after annealing for two hours at different temperature. Stress exponent, n,

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17

Li, Wei, Chen Liang, and Xudong Zhang. "Numerical simulation of microstructure evolution of high-purity tantalum during rolling and annealing." Modelling and Simulation in Materials Science and Engineering 30, no. 3 (2022): 035006. http://dx.doi.org/10.1088/1361-651x/ac4d78.

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Abstract In this study, a unified model of thermoplastic deformation and the corresponding microstructure evolution for tantalum with high purity was first proposed by introducing the state variable equations of recrystallization fraction, average grain size, and grain growth. The subroutine of microstructure evolution model was programmed for embedding into the finite element simulation of tantalum plates upon rolling and annealing, and the parameters of microstructure evolution were obtained by fitting the experimental data. Our simulation results reveal the correlations among the microstruc

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18

Khodabakhshi, Farzad, Mohsen Kazeminezhad, Mohammad Azarnush, and Seyyed Hossein Miran. "Effect of Post Annealing Treatment on Nano-Structured Low Carbon Steel Sheets Processed by Constrained Groove Pressing." Materials Science Forum 667-669 (December 2010): 1009–14. http://dx.doi.org/10.4028/www.scientific.net/msf.667-669.1009.

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There are many works on annealing process of SPDed bulk metals but there are limited works on annealing process of SPDed sheets. Therefore, in this study the annealing response after constrained groove pressing (CGP) of low carbon steel sheets has been investigated. These sheets are subjected to severe plastic deformation at room temperature by CGP method up to three passes. Nano-structured low carbon steel sheets produced by severe plastic deformation are annealed at temperature range of 100 to 600 °C for 20 min. The microstructural changes after deformation and annealing are studied by optic

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19

Arlazarov, Artem, Jean Marc Pipard, Nora Kabou, Pierre Targy, and Marc Olivier Thénot. "Towards High Strength-Ductility Balance Using Double Annealing Cycles." Materials Science Forum 1105 (November 29, 2023): 179–84. http://dx.doi.org/10.4028/p-od7cfl.

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Impact of first annealing on the formation and evolution of the microstructure during second annealing and on the final mechanical properties was investigated. Simple Fe-C-Mn-Si steel was used in this study. Dilatometry tests coupled with metallographic examinations were carried out to monitor the evolution of phase transformations and associated microstructure. Difference in the austenite evolution between simple and double annealing was highlighted. Based on the obtained results, conditions were selected for the annealing trials on bigger sample. Mechanical properties of heat-treated steels

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20

Kane, Genevieve A., M. David Frey, and Robert Hull. "Influence of Controlled Cooling Rates During Thermal Processing of Ti 6% Al 4% V Alloys Using In-Situ Scanning Electron Microscopy." MRS Advances 5, no. 29-30 (2020): 1603–11. http://dx.doi.org/10.1557/adv.2020.190.

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ABSTRACTWe describe experimental approaches to real time examination of the microstructural evolution of Ti 6%Al 4%V upon cooling from above the beta transus (~995 °C) while imaging in the scanning electron microscope. Ti 6%Al 4%V is a two phase, α+β titanium alloy with high strength and corrosion resistance. The β →α transformation on cooling can give rise to different microstructures and properties through various thermal treatments. Fully lamellar microstructures, bi-modal microstructures, and equiaxed microstructures can each be obtained by accessing different cooling rates upon the final

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21

Yang, Yi Qiao, Shuang Jiang, and Xiang Zhao. "Microstructure Evolution of Laser Direct Metal Deposition of M2 High Speed Steel." Materials Science Forum 879 (November 2016): 2198–203. http://dx.doi.org/10.4028/www.scientific.net/msf.879.2198.

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In the current investigation, the M2 high speed steel (HSS) sample was produced by laser direct metal deposition (DMD) with a rapid manufacturing (AM) process. The overall microstructure analysed by light optical microscopy (LOM) was a gradual transition from bottom zone to top zone due to the continuous decrease of the cooling rate. The observed microstructure from SEM and XRD was consisted of a cellular or dendritic structure of ferrite, martensite, retained austenite and fine carbides. Annealing at 860 oC led to spheroidization of carbides. The carbides were examined by XRD to be M6C and MC

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22

Nes, Erik, Bjørn Holmedal, and Børge Forbord. "The Effect of Boundary Structure on the Mechanical Properties of Aluminium Alloys." Materials Science Forum 519-521 (July 2006): 63–70. http://dx.doi.org/10.4028/www.scientific.net/msf.519-521.63.

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The microstructure in heavily deformed metals can be characterized as a complex “mixture” of low and high angle boundaries. By careful annealing of such cold deformed conditions, ultra-fine grained materials can be obtained. This phenomenon has been known for long and utilised in the production of special aluminium sheet qualities, and has received new interest with the emergence of the equal channel angular pressing (ECAP) technique. This work reviews the mechanical properties resulting from plastic deformation and annealing of aluminium, looking at alloys which prior to annealing was subject

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23

Torganchuk, Vladimir, Dmitri A. Molodov, Andrey Belyakov, and Rustam Kaibyshev. "Microstructure and Mechanical Properties of an Ultrafine Grained Medium-Mn Steel." Defect and Diffusion Forum 385 (July 2018): 308–13. http://dx.doi.org/10.4028/www.scientific.net/ddf.385.308.

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The effect of cold working followed by annealing on the development of ultrafine grained microstructure and mechanical properties of an Fe-12%Mn-0.6%C-1.5%Al medium-manganese steel was studied. The steel was cold rolled with intermediate annealings and then annealed at 873 K or 923 K for 30 min. The yield strength and total elongation of the Fe-12Mn-0.6C-1.5Al steel after cold rolling were 1200 MPa and 14%, respectively. The heat treatments resulted in the formation of two phase (austenite-ferrite) ultrafine grained microstructures with average grain sizes of 0.9 to 1.2 μm, depending on the an

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24

Rocha, Roberta O., Tulio M. F. Melo, and Dagoberto Brandao Santos. "Influence of Continuous Annealing Conditions on the Microstructure and Mechanical Properties of a C-Mn Dual Phase Steel." Materials Science Forum 638-642 (January 2010): 3479–84. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.3479.

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The influence of continuous annealing variables on the microstructure and mechanical properties of a C-Mn Dual Phase (DP) steel was studied. The annealing cycles were simulated using a Gleeble machine. Some specimens were quenched at different stages of the annealing cycle in order to evaluate the microstructural evolution during the annealing process. Tensile tests and microstrutural analysis were carried out. The results showed that high heating rates increased the final recrystallization temperature and as a consequence the microstructure obtained was refined. Austenite grain nucleation and

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25

Lee, Dong Hae, Mahoto Takeda, Masaki Takeguchi, and Dong Sik Bae. "Precipitation Behavior and Magnetic Properties of Nanoscale Particles in a Cu–10 at% Ni–5 at% Co Alloy." Advanced Materials Research 1077 (December 2014): 23–29. http://dx.doi.org/10.4028/www.scientific.net/amr.1077.23.

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We investigated the relationship between the microstructure and magnetic properties of a Cu–10 at% Ni–5 at% Co alloy by using a transmission electron microscope (TEM), a SQUID magnetometer and a magnetic thermo–balance. TEM observations were performed to examine the microstructures of the Cu–Ni–Co specimens annealed at four temperatures between 873 K and 1073 K below and above the Curie point (983 K).Particles with cubic shapes were linearly arranged along the <100> direction of the copper matrix in specimens prepared by isothermal annealing at temperatures below the Curie point, while o

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26

Ruckmich, Stefan. "Influence of Microstructure and Impurities on Thermal Conductivity of Aluminium Nitride Ceramics." International Journal of Materials Research 92, no. 7 (2001): 839–44. http://dx.doi.org/10.1515/ijmr-2001-0152.

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Abstract The microstructure of AlN ceramics, which were pressureless sintered with CaO and CaF2 as additives, was modified via an annealing process. The thermal conductivity of these samples was measured and correlated with the microstructure changes. The influence of the microstructural elements, especially content and distribution of secondary phases, is described and quantitatively related to mixture models from literature for a full understanding of the relationships between microstructure, impurity content and thermal conductivity. The main result of the investigation is that the microstr

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27

Mostafapour, Amir, Vahid Rezazadeh, and Salar Salahi. "Effect of Annealing Heat Treatment on the Microstructural Refinement of Pure Copper by Friction Stir Processing." Advanced Materials Research 829 (November 2013): 131–35. http://dx.doi.org/10.4028/www.scientific.net/amr.829.131.

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Recently, friction stir processing (FSP) was developed as an effective method to modify microstructural and mechanical properties of materials. During process, a rotating tool is inserted in a plate, providing frictional heating and mechanical mixing. In this investigation, the effect of annealing heat treatment on the microstructure characteristics of the nugget zone was investigated during friction stirs processing (FSP) of the pure copper. Plate with 4 mm thickness was friction stir processed at constant traverse speed of 45 mm/min and tool rotation speed of 700 rpm. Samples were processed

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28

Soares de Carvalho Mendes, Liduína. "Estudo do refinamento do grão da liga Ti6Al4V após tratamento térmico de envelhecimento, recozimento e têmpera." Revista InovaEducaTech 1, no. 1 (2025): 16. https://doi.org/10.63103/k73agx12.

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Heat treatment of titanium alloys, such as Ti-6Al-4V, is essential to adjust their mechanical and microstructural properties. Thus, heat treatments are essential to improve the properties of titanium alloys. This work aimed to investigate and characterize the effect of aging, annealing and tempering heat treatments on the grain refinement of Ti6Al4V alloy. Through aging, annealing and tempering heat treatment, the microstructure and hardness of 7 samples were analyzed. The analyzed samples were prepared for micrograph and microhardness analysis through metallographic technique after heat treat

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Ajami Ghaleh Rashidi, Padina, Hossein Arabi, and Seyed Mehdi Abbasi. "An assessment of static recrystallization in L-605 Cobalt-based superalloy." Metallurgical and Materials Engineering 22, no. 4 (2016): 221–36. http://dx.doi.org/10.30544/231.

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In this research, the effect of cold rolling, annealing time and temperature on microstructure and hardness were studied in L-605 superalloy. A cast bar of L-605 alloy was hot rolled at 1200ºC. As the following, it was solutionized at 1230 ºC for 1 hour and finally was cold rolled by different amounts (i.e. 5-35 percent thickness reduction). The cold-rolled samples were heat treated for different times (i.e. 2-120 min.) at temperature range of 1068-1230 ºC in order to study their recrystallization behavior. The results of microstructural analysis indicated that static recrystallization is resp

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Zhu, Lei, Ying Yang, Yuyang Li, et al. "Effect of Initial Microstructure on Soft Annealing of a Low-Carbon Bainitic Steel." Materials Proceedings 3, no. 1 (2021): 6. http://dx.doi.org/10.3390/iec2m-09246.

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A low-carbon bainitic tool steel exhibiting high hardness after hot rolling typically has poor machinability. To soften this type of steel and to accelerate the soft annealing process, an austenitizing step was designed based on thermodynamic calculations of phase stability and introduced prior to the annealing step. Different initial microstructures were prepared by three austenitizing temperatures (680 °C, 850 °C, 1000 °C) and three cooling methods (water quenching, oil quenching, and air cooling). The effect of initial microstructure on microstructures and hardness was studied. Softening eq

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Pan, Hai Bin, Yuan Tian, Guang Gui Cheng, and Li Qiang Guo. "Experimental Investigation of the Impact of Annealing on Resistivity of Boron-Doped Hydrogenated Nanocrystalline Silicon Thin Films." Applied Mechanics and Materials 29-32 (August 2010): 1883–87. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.1883.

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Boron-doped hydrogenated nanocrystalline silicon (nc-Si:H) thin films were deposited by plasma enhanced chemical vapor deposition (PECVD). Microstructures of these films were characterized and analyzed by Raman spectrum and atomic force microscopy (AFM). Thickness and resistivity of these films was measured by high-resolution profilometer and four-point probe respectively. The impact of annealing on boron-doped nc-Si:H thin films’ resistivity and the relationship between resistivity and microstructure were investigated. The results show that annealing and the annealing temperature have great i

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Delić, Alen, Mirsada Oruč, Milenko Rimac, Almaida Gigović-Gekić, and Raza Sunulahpašić. "The influence of solution annealing on microstructure and mechanical properties heat-resistant cast Steel HK30 modified by Niobium." Metallurgical and Materials Engineering 25, no. 3 (2019): 237–45. http://dx.doi.org/10.30544/430.

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In this paper, the room temperature mechanical properties, as well as the microstructure of HK 30 Nb steel, were tested in the initial as-cast and solution annealed condition. Results show that tensile properties after the solution annealing have a slightly lower value than as-cast samples. Microstructural analysis of samples after solution annealing showed dissolution of primary carbides present in the initial as-cast condition. The morphology and composition of carbides were changed during a solution annealing. Analysis of microstructure was done by optical microscopy (OM) and scanning elect

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33

Akbari, G. H., H. Abbaszadeh, and H. Ghotbi Ravandi. "Effects of Al, Si and Mn on the Recrystallization Behaviors of Fe Containing 70B Brass." Materials Science Forum 558-559 (October 2007): 107–11. http://dx.doi.org/10.4028/www.scientific.net/msf.558-559.107.

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Abstract (sommario):

The effects of alloying elements and impurities on the microstructure and properties of metals and alloys are important. Understanding of these effects may help to control and produce products with desired properties at lower cost. In the present work the effects of Al, Si and Mn on the recrystallization behavior, hardness and microstructural changes of an Fe- containing brass during annealing were studied. The results show that alloying elements strongly affect recrystallization kinetics and resulted finer microstructures. Hardness variations during annealing are consistent with microstructur

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34

Storojeva, L., D. Ponge, D. Raabe, and R. Kaspar. "On the influence of heavy warm reduction on the microstructure and mechanical properties of a medium-carbon ferritic –pearlitic steel." International Journal of Materials Research 95, no. 12 (2004): 1108–14. http://dx.doi.org/10.1515/ijmr-2004-0201.

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Abstract (sommario):

Abstract The current study on a medium-carbon steel (0.36% C) with deformation-induced spheroidized cementite produced by heavy warm deformation (HWD) was carried out in order to investigate an alternative microstructural route when compared to conventional quenching and tempering (QT) or soft annealing (SA) processes. After austenite deformation, the HWD samples were cooled and heavily deformed at temperatures below the γ–α transformation followed by a simulated coiling treatment. In particular, the study addresses the influence of adiabatic heating due to the heavy deformation on the microst

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35

Polozov, Igor, Kirill Starikov, Anatoly Popovich, and Vadim Sufiiarov. "Mitigating Inhomogeneity and Tailoring the Microstructure of Selective Laser Melted Titanium Orthorhombic Alloy by Heat Treatment, Hot Isostatic Pressing, and Multiple Laser Exposures." Materials 14, no. 17 (2021): 4946. http://dx.doi.org/10.3390/ma14174946.

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Abstract (sommario):

Titanium orthorhombic alloys based on intermetallic Ti2AlNb-phase are attractive materials for lightweight high-temperature applications. However, conventional manufacturing of Ti2AlNb-based alloys is costly and labor-consuming. Additive Manufacturing is an attractive way of producing parts from Ti2AlNb-based alloys. High-temperature substrate preheating during Selective Laser Melting is required to obtain crack-free intermetallic alloys. Due to the nature of substrate preheating, the temperature profile along the build height might be uneven leading to inhomogeneous microstructure and defects

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36

Dong, Yan, Bo Ping Zhang, Ya Ru Zhang, and Jing Feng Li. "Microstructure and Dielectric Properties of LiTiNiO Thin Films." Key Engineering Materials 336-338 (April 2007): 2635–38. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.2635.

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Abstract (sommario):

LiTiNiO thin films were deposited on Pt/Ti/SiO2/Si(100) substrates using a sol-gel spin-coat method. The effects of annealing temperature and annealing time on microstructures and dielectric properties of the thin films were investigated. SEM images showed the thin films had uniform and dense microstructure and the grain size increased with increasing temperature and time. The LiTiNiO thin films consisted of complex oxides which proportions were mainly dependent on the annealing condition. The LiTiNiO thin film annealed at 600°C for 1h showed the highest dielectric constant and frequency stabi

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37

Hitit, Aytekin, Ziya Ozgur Yazici, Hakan Şahin, Pelin Öztürk, Buğrahan Eryeşil, and Nusrettin Barut. "Microstructure and Mechanical Properties of CoWB Based Composites Produced by Crystallization of Ni-Co-Zr-Ta-W-B Bulk Metallic Glass." Metals 12, no. 2 (2022): 251. http://dx.doi.org/10.3390/met12020251.

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Abstract (sommario):

CoWB based composites were produced by annealing Ni33.6Co23.2Zr0.5Ta4W23.7B15 bulk metallic glass above the crystallization temperature. The effect of annealing on the microstructure of the composites was investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Microhardness (Hv) and indentation fracture toughness (KC) of the composites were also measured. Microstructural examinations revealed that the first precipitated phase as a result of annealing is a nickel solid solution. As the annealing time is increased, CoWB and the nickel solid solution begins to precipitate.

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38

Stopyra, Michał, and Janusz Adamiec. "Microstructural Stability of Long-Term Annealed AZ91 Magnesium Alloy Weld Joint." Materials Science Forum 782 (April 2014): 161–65. http://dx.doi.org/10.4028/www.scientific.net/msf.782.161.

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Abstract (sommario):

Welding and pad welding are widely used methods of repair and regeneration of defective magnesium alloys castings. AZ91 is one of the most popular magnesium alloys used at temperature up to 120°C. Therefore there is need to study the influence of welding and elevated temperature exposure on the microstructure and properties of AZ91 weld joints. This paper discusses microstructural stability of AZ91 gas tungsten arc weld joint in T6 condition (solution treated and aged). In order to examine the weld joints microstructural stability, the long-term annealing has been carried out at 120°C. Hardnes

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39

Sankaran, S., and Satyam Suwas. "Texture Evolution in Thermomechanically Control Processed Multiphase Medium Carbon Microalloyed Steel: Forged, Rolled and Low Cycle Fatigued Microstructures." Materials Science Forum 702-703 (December 2011): 449–52. http://dx.doi.org/10.4028/www.scientific.net/msf.702-703.449.

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Abstract (sommario):

A ferrite-bainite-martensite (F-B-M) microstructure was produced in a medium carbon microalloyed steel through two routes, namely, low temperature finish forging or rolling, followed by a two step cooling and annealing. The texture formed in control forged and rolled material after two step cooling followed by annealing (TSCA) was examined. Texture investigation was also carried out after low cycle fatigue testing at low and high total strain amplitudes. Transmission electron microscopy was employed to study the microstructural evolution. Fatigue tested F-B-M microstructure obtained through th

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40

Gaggiotti, Matteo, Luciano Albini, Paolo Emilio Di Nunzio, Andrea Di Schino, Giulia Stornelli, and Giulia Tiracorrendo. "Ultrafast Heating Heat Treatment Effect on the Microstructure and Properties of Steels." Metals 12, no. 8 (2022): 1313. http://dx.doi.org/10.3390/met12081313.

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Abstract (sommario):

The adoption of the ultrafast heating (UFH) process has gained much attention in the last few years, as the green energy and minimization of CO2 emissions are the main aspects of contemporary metal science and thermal treatment. The effect of ultrafast heating (UFH) treatment on carbon steels, non-oriented grain (NGO) electrical steels, and ferriticor austenitic stainless steels is reported in this review. The study highlights the effect of ultrarapid annealing on microstructure and textural evolution in relation to microstructural constituents, recrystallization temperatures, and its effect o

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41

Azevedo, G., Ronaldo Barbosa, Elena V. Pereloma, and Dagoberto Brandão Santos. "Intercritical Annealing Behaviour of an Ultrafine Grained C-Mn Steel Obtained by Hot Torsion Deformation." Materials Science Forum 550 (July 2007): 471–76. http://dx.doi.org/10.4028/www.scientific.net/msf.550.471.

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Abstract (sommario):

Several studies concerning ferrite grain refinement have been developed in recent the last years due to the recognised influence of such microstructures on steels properties. This work was focused on the evaluation of the microstructure and mechanical properties of an ultrafine grained CMn steel obtained by hot torsion deformation and intercritical annealing. After 5 min soaking at 900 and 1200°C, the samples of low carbon steel were quenched and then reheated. Hot torsion deformation was conducted at temperatures of 700 or 740°C. The torsion schedule consisted of 7 isothermal passes leading t

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42

Huang, Guang Jie, Ling Yun Wang, Guang Sheng Huang, Fu Sheng Pan, and Qing Liu. "Effect of Rolling and Annealing on the Mechanical Properties and Microstructure of AZ31 Magnesium Alloy." Materials Science Forum 546-549 (May 2007): 379–82. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.379.

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Abstract (sommario):

Microstructural evolution and mechanical properties of the AZ31 magnesium alloy during rolling and annealing process were investigated. The sheet samples were prepared after different stages of the hot rolling, cold rolling and annealing processes. The hot rolling temperature was between 300-450C and the final thickness of the cold rolled sheets was 1.5mm. The cold rolled sheets were annealed at different annealing temperature (260-350C) for different time (10~120min). Tensile test was performed to investigate the mechanical properties of the samples obtained from different stages. With aid of

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43

Lim, Chao Voon Samuel, Yang Liu, Chen Ding, and Aijun Huang. "Effect of Supra-Transus Deformation Conditions on Recrystallization of Beta Ti Alloy." Metals 11, no. 8 (2021): 1278. http://dx.doi.org/10.3390/met11081278.

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Abstract (sommario):

There is increasing usage of high strength Beta Ti alloy in aerospace components. However, one of the major challenges is to obtain homogeneous refined microstructures via the thermo-mechanical processing. To overcome this issue, an understanding of the hot deformation conditions effect on the microstructure, prior to and after annealing, is needed. In this work, the effect of strain levels, which is more precise than percentage of reduction, and strain rate under supra-transus deformation temperature on beta annealing are studied using a double cone sample. The Electron Backscattered Diffract

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44

Rodak, Kinga, and Krzysztof Radwański. "Structural Stability of Cu Processed by Severe Plastic Deformation Method." Solid State Phenomena 163 (June 2010): 114–17. http://dx.doi.org/10.4028/www.scientific.net/ssp.163.114.

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Abstract (sommario):

The annealing behaviour of monocrystaline Cu processed by Cyclic Extrusion Compression (CEC) was investigated. The effect of the CEC strain on the annealing behaviour of submicrometer grained structure was studied by examination of the microstructural changes of the samples processed by two different CEC strains, 4.8 and 13.9 during annealing at 300oC for the time in the range from 1sec to 120 min. The results show that microstructure is stable up to an annealing time of 15 min. At a higher time of annealing (above 15 min), a gradual grain growth occurs.

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45

Li, Xiao Ling, Wei Liu, Andrew Godfrey, and Qing Liu. "Effect of an Electric Field on the Texture and Microstructure Evolution during Annealing of High Reduction Cold-Rolled Ni." Key Engineering Materials 353-358 (September 2007): 679–82. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.679.

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Abstract (sommario):

The influence of an electric field on the annealing of high purity (99.999%) cold rolled nickel has been investigated. Annealing was carried out for 2 hours at temperatures between 300oC and 800oC with and without an electric field of strength 2.0KVcm-1. The microstructure and fraction of cube texture resulting were characterized using electron backscattering pattern (EBSP) technique. Annealing in an electric field leads to somewhat smaller average values of the cube fraction and grain sizes compared to annealing without an electric field. The highest temperature (800oC) annealing in an electr

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46

Han, Fang, Hanxi Wang, Xuan Luo, Ziyong Hou, Guilin Wu, and Xiaoxu Huang. "Microstructure and Texture Evolution of Hot-Rolled Mg-3Gd Alloy during Recrystallization." Metals 13, no. 7 (2023): 1216. http://dx.doi.org/10.3390/met13071216.

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Abstract (sommario):

An Mg-3Gd (wt.%) sample with gradient rolling strains (ε = 0–0.55) was prepared using a wedge-shaped plate after one-pass hot rolling, allowing a high-throughput characterization of microstructure and texture over a wide strain range within one hot-rolled plate. The microstructure and texture evolutions were characterized as a function of rolling strain for the as-hot-rolled sample and as a function of annealing temperature for the subsequently annealed samples. The deformed microstructure showed a gradual change with increasing rolling strain, i.e., from a deformation twins-dominant structure

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47

Verdeja, J. I., J. A. Pero-Sanz, and J. Asensio. "Multiphase Steels: Structure-Mechanical Properties Relationships in the Cold Rolled and Continuous Annealed Condition." Materials Science Forum 500-501 (November 2005): 429–36. http://dx.doi.org/10.4028/www.scientific.net/msf.500-501.429.

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Abstract (sommario):

The present work describes the correlation between the microstructure and the mechanical properties of multiphase steels processed through a Continuous Annealing Process Line (CAPL). The mechanical and microstructural properties of one of the former experimental steel compositions was also processed via Batch Annealing (BA) and the results have been included for comparison reasons.

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48

Georges, C., Stéphane Godet, and Pascal J. Jacques. "Development of High Performance Nb-Added Hot Rolled Bainitic Steels Presenting a TRIP Effect." Materials Science Forum 500-501 (November 2005): 437–44. http://dx.doi.org/10.4028/www.scientific.net/msf.500-501.437.

Testo completo

Abstract (sommario):

The present work describes the correlation between the microstructure and the mechanical properties of multiphase steels processed through a Continuous Annealing Process Line (CAPL). The mechanical and microstructural properties of one of the former experimental steel compositions was also processed via Batch Annealing (BA) and the results have been included for comparison reasons.

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49

Zhuang, Yan-Xin, Xiu-Lan Zhang, and Xian-Yu Gu. "Effect of Annealing on Microstructure and Mechanical Properties of Al0.5CoCrFeMoxNi High-Entropy Alloys." Entropy 20, no. 11 (2018): 812. http://dx.doi.org/10.3390/e20110812.

Testo completo

Abstract (sommario):

The effect of annealing temperature on the microstructure, phase constituents and mechanical properties of Al0.5CoCrFeMoxNi high-entropy complex alloys has been investigated at a fixed annealing time (10 h). The 600 °C-annealing has no obvious effect on their microstructures, while the annealing at 800–1200 °C enhances the precipitation of (Al,Ni)-rich ordered BCC phase or/and (Cr,Mo)-rich σ phase, and thereby greatly affects the microstructure and mechanical properties of the alloys. All the annealed Al0.5CoCrFeNi alloys are composed of FCC and (Al,Ni)-rich ordered BCC phases; the phase const

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50

Fox, G. R., S. B. Krupanidhi, K. L. More, and L. F. Allard. "Composition/structure/property relations of multi-ion-beam reactive sputtered lead lanthanum titanate thin films: Part I. Composition and structure analysis." Journal of Materials Research 7, no. 11 (1992): 3039–55. http://dx.doi.org/10.1557/jmr.1992.3039.

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Abstract (sommario):

Material properties are greatly dependent upon the structure of the material. This paper, the first of three parts, discusses how composition influences the crystallographic structure and microstructure of lead lanthanum titanate (PLT) thin films grown by the multi-ion-beam reactive sputtering (MIBERS) technique. A transmission electron microscopy (TEM) study detailing the relationship between crystallographic texturing and microstructure development will be presented in a second paper. The dependence of the ferroelectric properties on observed crystallographic structure and microstructure is

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