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Artykuły w czasopismach na temat „Microstructural modification”

Autor: Grafiati

Data publikacji: 6 września 2023

Data aktualizacji: 31 lipca 2025

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1

Taltavull, Catalina, Belen Torres, Antonio Julio Lopez, and Joaquin Rams. "Relationship between Laser Parameters - Microstructural Modification - Mechanical Properties of Laser Surface Melted Magnesium Alloy AZ91D." Materials Science Forum 765 (July 2013): 678–82. http://dx.doi.org/10.4028/www.scientific.net/msf.765.678.

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Laser surface melting is a high-energy surface treatment that allows modification of the microstructure and surface properties of Mg alloys. In the present work, a high-power diode laser has been used to study the microstructural and mechanical modifications that occur when laser surface treatments are applied to the surface of the AZ91D Mg alloy. Laser-beam power in a range of 375-600 W and laser scanning speeds of 45-60-90 mms-1 has been used to develop a range of laser surface melting treatments. By controlling the laser parameters, two types of surface modifications can be obtained. Comple

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Abdalla, Ayad Omran, Astuty Amrin, Roslina Mohammad, and M. A. Azmah Hanim. "Microstructural Study of Newly Designed Ti-6Al-1Fe Alloy through Deformation." Solid State Phenomena 264 (September 2017): 54–57. http://dx.doi.org/10.4028/www.scientific.net/ssp.264.54.

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Recently, iron (Fe) is introduced to substitute vanadium (V) in Ti-alloy. Therefore, new (α+β) titanium alloy, Ti-6Al-1Fe was designed through a complete replacement of V by Fe with major composition modifications of Ti-6Al-4V. This new alloy is believed could provide similar properties of Ti-6Al-4V through modification of its microstructures. Different heat treatments can lead to a diversity of microstructural permutations and combinations. Thus, it is very crucial to study in-depth understanding about the microstructure of Ti-6Al-1Fe. Results reveal that the microstructure of as-received all

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Herbster, Maria, Karsten Harnisch, Paulina Kriegel, et al. "Microstructural Modification of TiAl6V4 Alloy to Avoid Detrimental Effects Due to Selective In Vivo Crevice Corrosion." Materials 15, no. 16 (2022): 5733. http://dx.doi.org/10.3390/ma15165733.

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TiAl6V4 wrought alloy is a standard material used for endoprostheses due to its ideal characteristics in terms of osseointegration. However, the insufficient wear and crevice corrosion resistance of TiAl6V4 are limiting factors that can cause clinical problems. Therefore, the objective of this study was to analyze and identify suitable phases and microstructural states of TiAl6V4 alloy with advantageous implant properties by thermal treatments. By varying the temperature and cooling rate, four heat treatment strategies were derived that produced different microstructural states that differed i

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Jeong, G. C., H. J. Choi, Yong Ho Sohn, and S. I. Kwun. "Effects of Combined Surface Modification on Adhesion Strength of CrN Coatings for STS420." Defect and Diffusion Forum 297-301 (April 2010): 1334–39. http://dx.doi.org/10.4028/www.scientific.net/ddf.297-301.1334.

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In order to improve the durability and performance of molds and tools, diverse methods of surface modification are used where the adhesion strength between a substrate and coating plays an important role. To improve adhesion strength, a combined surface modification method is often utilized. In this study, adhesion strength and microstructure of various combined surface modifications (i.e., ion-nitriding, Cr intermediate layer, CrN layer and nitrogen ion- implantation) were examined on STS420. Phase constituents, microstructure, adhesion strength and hardness of coating-substrate system with c

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Zhang, Xiao Feng, and Lutgard C. De Jonghe. "Thermal Modification of Microstructures and Grain Boundaries in Silicon Carbide." Journal of Materials Research 18, no. 12 (2003): 2807–13. http://dx.doi.org/10.1557/jmr.2003.0391.

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Polycrystalline SiC samples hot pressed with aluminum, boron, and carbon sintering additions (ABC-SiC) were characterized using transmission electron microscopy. The study focused on the effects of high-temperature treatment on microstructure. Three temperatures, at which considerable microstructural changes took place, were found to be critical. At a threshold temperature of approximately 1000°C, 1-nm-wide, amorphous intergranular films started to crystallize. At approximately 1300°C, lattice diffusion in SiC grains resulted in nanoprecipits, which could diffuse into grain boundaries and sign

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6

Liu, Z., H. Liu, F. Viejo, Z. Aburas, and M. Rakhes. "Laser-induced microstructural modification for corrosion protection." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 224, no. 5 (2010): 1073–85. http://dx.doi.org/10.1243/09544062jmes1858.

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Laser surface modification of materials by melting and annealing has been the subject of considerable interest as a means of enhancing the corrosion performance of metallic alloys. Microstructural modification without changing surface chemical composition, in terms of homogenization/refinement of microstructures, dissolution/re-distribution of intermetallic particles, and extended solid solubility, resulting from rapid rates of cooling, provides the basis for property enhancement. This paper reviews authors’ work on laser surface melting (LSM) and laser annealing (LA) for the purpose of improv

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Patra, Srabani, Janani Narayanasamy, Thamayanthi Panneerselvam, and Ramaswamy Murugan. "Review—Microstructural Modification in Lithium Garnet Solid-State Electrolytes: Emerging Trends." Journal of The Electrochemical Society 169, no. 3 (2022): 030548. http://dx.doi.org/10.1149/1945-7111/ac5c99.

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Garnet structured solid electrolytes-based lithium metal batteries are the most attractive high energy density electrochemical energy storage candidates for the transportation and grid sectors. Various studies are carried out to address the concerns of lithium garnets as solid electrolytes and improve their electrochemical performance in lithium metal batteries. Interfacial engineering is a widely studied strategy for improving lithium garnet electrolyte-electrode interfacial contact and critical current densities. In the same perspective, microstructural/grain boundary engineering in lithium

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8

Florea, Costel, Costică Bejinariu, Ioan Carcea, Viorel Paleu, Daniela Chicet, and Nicanor Cimpoeşu. "Preliminary Results on Microstructural, Chemical and Wear Analyze of New Cast Iron with Chromium Addition." Key Engineering Materials 660 (August 2015): 97–102. http://dx.doi.org/10.4028/www.scientific.net/kem.660.97.

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A new cast-iron material was obtained by melting in an induction furnace. The material was microstructural and chemical characterized before and after a wear test. We analyze the chemical composition of the material at macro-scale using a Spark Spectrometer and at micro-scale using Dispersive Energy Spectrometer. Microstructure before and after the external solicitations was observed using a Scanning Electron Microscope. We also evaluate the influence of external force on the dendrites microstructural and chemical modification.

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9

Snopiński, Przemysław. "Effect of Al10Sr and TiB on the Microstructure and Solidification Behavior of AlMg5Si2Mn Alloy." Solid State Phenomena 326 (November 2, 2021): 111–24. http://dx.doi.org/10.4028/www.scientific.net/ssp.326.111.

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In the first stage of the experiment, the effect of Al10Sr modification and Al5TiB grain refiner and interaction of both additions on the microstructure of AlMg5Si2Mn alloy and Mg2Si phase morphology was investigated. Then the influence of Al10Sr and Al5TiB addition on nucleation temperatures of various intermetallic phases formed in AlMg5Si2Mn alloy also have been interpreted by the formation of distinct peaks in the first derivative cooling curve and microstructural observations. It was found that modification has a meaningful influence on the microstructure of the investigated alloy as well

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10

Bousquet, Emilie, Angéline Poulon-Quintin, Olivier Devos, Monique Puiggali, and Marie Touzet. "Microstructure, Mechanical and Corrosion Behaviour of AN AA2024-T3 FSW Joint." Advanced Materials Research 409 (November 2011): 257–62. http://dx.doi.org/10.4028/www.scientific.net/amr.409.257.

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The FSW weld consists of three distinct microstructural zones. The microstructure inside each zone is directly impacted by the FSW process parameters. The aim of this article is to correlate microstructure, microhardness and corrosion sensitivity of a AA-2024-T3 FSW joint for one processing parameter set. A microstructural analysis has been conducted in each weld zone by the combination of TEM observations, chemical and DSC analysis. Moreover, a small electrochemical cell was used to estimate the corrosion sensitivity of the distinct zones by localized open circuit potential measurements all a

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11

Liang, Yu, Hao Ding, Sijia Sun, and Ying Chen. "Microstructural Modification and Characterization of Sericite." Materials 10, no. 10 (2017): 1182. http://dx.doi.org/10.3390/ma10101182.

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Iwase, Akihiro, and Fuminobu Hori. "Modification of Lattice Structures and Mechanical Properties of Metallic Materials by Energetic Ion Irradiation and Subsequent Thermal Treatments." Quantum Beam Science 4, no. 1 (2020): 17. http://dx.doi.org/10.3390/qubs4010017.

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When materials are irradiated with high-energy ions, their energies are transferred to electrons and atoms in materials, and the lattice structures of the materials are largely changed to metastable or non-thermal equilibrium states, causing the modification of several physical properties. There are two processes for the material modification by ion irradiation; one is “the irradiation-enhanced process”, and the other is “the irradiation-induced process”. In this review, two kinds of recent results for the microstructural changes and the modifications of mechanical properties will be summarize

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13

Gariboldi, Elisabetta, and Marco Colombo. "Characterization of Innovative Al-Si-Mg-Based Alloys for High Temperature Applications." Key Engineering Materials 710 (September 2016): 53–58. http://dx.doi.org/10.4028/www.scientific.net/kem.710.53.

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The role played by transition elements and rare earths, added in small quantities (fractions of unity in weight percent) was proved by several authors to be beneficial for the age-hardening response and for the microstructural stability at high temperature of Al-based alloys. The paper illustrates the results of an experimental investigation on the effects of erbium (Er) additions on the microstructural features, microstructural stability and mechanical properties of an Al-7Si-0.4Mg alloy of wide industrial use. The effects are multifold: in the cast microstructure, a silicon (Si) eutectic mod

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14

Li, Kejian, Qiang Zheng, Chunhong Li, et al. "Characterization of Surface Modification of 347 Stainless Steel upon Shot Peening." Scanning 2017 (2017): 1–4. http://dx.doi.org/10.1155/2017/2189614.

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Plastic deformations, such as those obtained by shot peening on specimen surface, are an efficient way to improve the mechanical behavior of metals. Generally, scanning electron microscopy (SEM) and electron backscattered diffraction (EBSD) are commonly used to observe the complex microstructural evolutions, such as grain refinement and phase transformation, induced by the surface treatment. In this work, the microstructure of 347 stainless steel, after ultrasonic shot peening (USP) treatments, was investigated. SEM, EBSD, transmission electron microscopy, and X-ray diffraction were used to ob

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15

Kumar, K. G. Basava. "Influence of Refinement and Modification on Dry Sliding Wear Behavior of Hypereutectic Al-Si Cast Alloys." Advanced Materials Research 685 (April 2013): 112–16. http://dx.doi.org/10.4028/www.scientific.net/amr.685.112.

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The microstructures and dry sliding wear behavior of Al-17Si cast alloys were studied after various melt treatments such as refinement and modification. Results indicate that combined refined and modified Al-17Si cast alloys have microstructures consisting of uniformly distributed primary silicon and fine eutectic AlSilicon particles through out the matrix. These alloys exhibited better wear resistance in the cast condition compared with the same alloy subjected to only refinement or modification. The improvements in properties observed in the present studies are mainly due to the structural d

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16

Wusatowska-Sarnek, Agnieszka M., Gautam Ghosh, Gregory B. Olson, Martin J. Blackburn, and Mark Aindow. "Characterization of the microstructure and phase equilibria calculations for the powder metallurgy superalloy IN100." Journal of Materials Research 18, no. 11 (2003): 2653–63. http://dx.doi.org/10.1557/jmr.2003.0371.

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The microstructure of the Ni-based superalloy IN100 processed by a powder metallurgy route was evaluated to reveal the structures, volume fractions, distributions, and chemistries of the various phases present. These data were compared with those predicted by computational thermodynamics. It is shown that the microstructural parameters expected on the basis of global equilibrium conditions differ significantly from those measured experimentally. However, modification of these calculations by use of constrained and successive equilibria compensated for kinetic effects and led to accurate (or be

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17

Iqbal, Muhammad, J. I. Akhter, A. Qayyum, Y. Javed, M. Rafiq, and A. A. Khuram. "Surface Modification and Characterization of Bulk Amorphous Materials." Key Engineering Materials 510-511 (May 2012): 43–50. http://dx.doi.org/10.4028/www.scientific.net/kem.510-511.43.

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Bulk metallic glasses (BMGs) are well known for their promising properties. Surface properties can be further improved by using certain techniques such as electron beam melting (EBM), laser beam melting (LBM), ion irradiation, ion implantation and neutron irradiation. BMGs especially Zr-based BMGs have numerous applications as structural materials. In this manuscript, the results are presented on microstructural investigations and phase formations in Zr-based BMGs modified by using above mentioned techniques. Microstructure was studied by scanning electron microscopy (SEM). Phase analysis was

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18

Tantiwaitayaphan, Tanawat, Phromphong Pandee, and Chaowalit Limmaneevichitr. "Modification of Eutectic Si in Hypoeutectic Al-Si Alloys with Erbium Addition." Key Engineering Materials 718 (November 2016): 139–42. http://dx.doi.org/10.4028/www.scientific.net/kem.718.139.

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Effect of erbium (Er) on the eutectic Si morphologies in hypoeutectic Al-Si based alloys was investigated using thermal analysis and microstructure examination. The microstructural observations show that the addition of Er causes significant modification of the eutectic silicon morphology from a coarse plate-like to a fine fibrous one. Furthermore, the results of thermal analysis reveal that the addition of Er decreased the temperatures of eutectic nucleation and growth, and increased the eutectic undercooling. The eutectic undercooling caused by the presence of Er plays an important role in t

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Li, Pengfei, Wenhao Gan, Guoyou Yao, Qiao Huang, and Renming Zhao. "Effect of Permeable Crystalline Materials on the Mechanical and Porosity Property of Recycled Aggregate and Recycled Aggregate Concrete." Materials 16, no. 13 (2023): 4596. http://dx.doi.org/10.3390/ma16134596.

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This study investigates the potential of permeable crystalline materials to improve the properties of recycled aggregates and recycled aggregate concrete (RAC). The use of recycled aggregates in concrete production has gained increasing attention due to environmental and economic benefits. However, the lower quality and poorer durability of recycled aggregates limit their wider application. In this study, three types of recycled aggregates were treated with permeable crystalline materials, and their water absorption and crushing index were compared before and after modification. RAC was then p

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Fracchia, Elisa, Federico Simone Gobber, and Mario Rosso. "Effect of Alloying Elements on the Sr Modification of Al-Si Cast Alloys." Metals 11, no. 2 (2021): 342. http://dx.doi.org/10.3390/met11020342.

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Strontium-based modifier alloys are commonly adopted to modify the eutectic silicon in aluminum-silicon casting alloys by changing the silicon shape from an acicular to a spherical form. Usually, the modifier alloy necessary to properly change the silicon shape depends on the silicon content, but the alloying elements’ content may have an influence. The AlSr10 master alloy’s modifying effect was studied on four Al-Si alloys through the characterization of microstructural and mechanical properties (micro-hardness and impact tests). The experimental results obtained on gravity cast samples highl

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Ohtaki, Michitaka, Daisuke Ogura, Koichi Eguchi, and Hiromichi Arai. "Thermoelectric Properties of Sintered FeSi2with Microstructural Modification." Chemistry Letters 22, no. 6 (1993): 1067–70. http://dx.doi.org/10.1246/cl.1993.1067.

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Costa e Silva, A., and M. J. Kaufman. "Microstructural modification of MoSi2 through aluminum additions." Scripta Metallurgica et Materialia 29, no. 8 (1993): 1141–45. http://dx.doi.org/10.1016/0956-716x(93)90192-u.

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Lathabai, Sri, R. Migeon, V. K. Tyagi, Robert G. O'Donnell, and Yuri Estrin. "Friction Stir Processing: A Technique for Microstructural Refinement in Metallic Materials." Materials Science Forum 618-619 (April 2009): 63–67. http://dx.doi.org/10.4028/www.scientific.net/msf.618-619.63.

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Friction stir processing (FSP) combines frictional heating and severe plastic deformation to produce microstructural modification, either locally targeted at the near-surface regions or through the bulk, of metallic components fabricated by conventional processing routes. In this paper, we highlight the capabilities of this process by applying it to a high-pressure die cast Al-Si-Mg-(Cu) alloy and examining the resulting microstructure and mechanical properties.

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Schmidt, Christopher David, Hans-Jürgen Christ, and Axel Von Hehl. "Hydrogen as a Temporary Alloying Element for Establishing Specific Microstructural Gradients in Ti-6Al-4V." Metals 12, no. 8 (2022): 1267. http://dx.doi.org/10.3390/met12081267.

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Parts of vehicles, such as landing gear components of aircrafts, are subject to growing demands in terms of sustainability via lightweight design and durability. To fulfill these requirements, the development of thermochemical processes is auspicious. Titanium alloys allow a heat treatment in hydrogen-containing atmosphere for temporary hydrogen alloying, often called thermohydrogen treatment (THT). The investigation presented intends to realize a local microstructure modification of Ti-6Al-4V by means of THT. The study aims to use hydrogen (H) as a promoter for changing the local distribution

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Venkateswarlu, G., M. J. Davidson, G. R. N. Tagore, and P. Sammaiah. "Influence of Process Parameters on Microstructure of Friction Stir Processed Mg AZ31 Alloy." International Journal of Surface Engineering and Interdisciplinary Materials Science 2, no. 1 (2014): 47–58. http://dx.doi.org/10.4018/ijseims.2014010103.

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Friction stir processing (FSP) has been developed on the principles of friction stir welding (FSW) as an effective and efficien new method for grain refinement and microstructural modification, providing intense plastic deformation as well as higher strain rates than other conventional severe plastic deformation methods. FSP produces an equiaxed homogeneous microstructure consisting of fine grains, resulting in the enhancement of the properties of the material at room temperature. The objective of the present paper is to examine the influence of friction stir processing (FSP) parameters namely

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Rodrigues, Adilson Vitor, Rafael Kakitani, Cássio Silva, et al. "Influence of Minor Additions of Be on the Eutectic Modification of an Al-33wt.%Cu Alloy Solidified under Transient Conditions." Metals 13, no. 1 (2023): 94. http://dx.doi.org/10.3390/met13010094.

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Al-based alloys are often selected for use in various engineering applications as well as in the aircraft and aerospace industry. The improvement of their performances under severe conditions have required the use of alloying elements. In the present work, Be is added to the eutectic Al-33 wt.%Cu alloy with a view to investigating the resulting effects on microstructural features and hardness. A directional solidification technique is used, yielding a wide range of solidification cooling rates. This permits microstructural features to be investigated with emphasis on the role of Be on the eute

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Widener, Christian A., Dwight A. Burford, and Sarah Jurak. "Effects of Tool Design and Friction Stir Welding Parameters on Weld Morphology in Aluminum Alloys." Materials Science Forum 638-642 (January 2010): 1261–66. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.1261.

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Friction stir welding (FSW) is a complex thermo-mechanical process which produces wrought microstructure with microstructural gradients in grain size, grain orientation, dislocation density, and precipitate distribution. The type and degree of microstructural modification is a function of the particular alloy chosen, its initial temper, the tool design and corresponding weld process parameter window, and other variables like material thickness, size, fixturing, etc. Since the microstructural changes produced can dramatically affect resultant mechanical performance and corrosion response, a tho

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Kusinski, G. J., and G. Thomas. "Physical and Magnetic Modification of Co/Pt Multilayers by Ion Irradiation." Microscopy and Microanalysis 8, no. 4 (2002): 319–32. http://dx.doi.org/10.1017/s1431927602020275.

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The microstructure of Co/Pt multilayers with large perpendicular magnetic anisotropy (PMA) was investigated before and after energetic ion irradiation. No pronounced microstructural changes were detected at ion doses sufficient to completely reduce the PMA and cause a spin reorientation transition to in-plane. Ion-induced displacement of Co and Pt atoms near Co/Pt interfaces lead to local “roughening” and Co layer strain relaxation, reducing the PMA. The magnetic domain confinement induced by ion irradiation and magnetic patterning by selective ion irradiation were also investigated.

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Shastin, V. I., and S. K. Kargapol’tsev. "Laser Modification: Increasing the Wear Resistance of Friction Surfaces." Key Engineering Materials 836 (March 2020): 104–10. http://dx.doi.org/10.4028/www.scientific.net/kem.836.104.

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The article deals with topical issues of studying the physical, mechanical and tribological parameters of the surface layer of machine parts subjected to laser processing. Various options for modifying mating surfaces are evaluated and analyzed. The data of microstructural analysis and indicators of wear resistance are presented. A theoretical model of the wear of heat-strengthened surfaces is proposed, explaining the mechanism for increasing their wear resistance as a result of homogenization of the microstructure of a special surface layer with increased bearing capacity. It is experimentall

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Huang, Her-Yueh, Iang-Chuen Kuo, and Chia-Wei Zhang. "Friction-stir welding of aluminum alloy with an iron-based metal as reinforcing material." Science and Engineering of Composite Materials 25, no. 1 (2018): 123–31. http://dx.doi.org/10.1515/secm-2016-0065.

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AbstractThe fabrication of a durable and usable aluminum matrix composite poses a challenge because it is hard to obtain defect-free welds by using conventional fusion welding methods. The development of friction-stir welding (FSW) provides improved microstructure modification. As there are no melting problems associated with it, liquid-solid reactions are eliminated. The objective of this study was to attempt FSW of an AA6061 alloy reinforced with an iron-based metal and to determine the properties of the joints. The effects of FSW parameters, especially the tool rotation speed, are presented

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Ahmed, Hadj sadok. "Effect of the microstructure of mortars with low hydraulicity slag on their behavior in aggressive environments." MATEC Web of Conferences 149 (2018): 01025. http://dx.doi.org/10.1051/matecconf/201814901025.

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Slag is one of the most used cement additives. Due to its latent hydraulic nature, attached to its hydraulicity, it can contribute to a microstructural modification and an improvement of the durability of the concrete face of aggressive environments. In this study, a low active slag is used in the manufacture of mortars as a substitute for cement, at a maximum rate of 50%. Firstly, a study of the microstructure with mercury porosimetry was used for determination of microstructural parameters (porosity, diameters and volume distribution). The behavior of mortars in aggressive environments (sodi

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Nenadovic, S., M. Nenadovic, R. Kovacevic, et al. "Influence of diatomite microstructure on its adsorption capacity for Pb(II)." Science of Sintering 41, no. 3 (2009): 309–17. http://dx.doi.org/10.2298/sos0903309n.

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The effect of microstructural changes caused by mechanical modification on adsorption properties of diatomite samples were investigated. The microstructure has been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM) while the degree of metal adsorption was evaluated by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP AES). The results show that metal sorption capacity of diatomite is considerably improved after mechanical modification and it can be attributed to amorphysation of the material. Immobilization efficiency incr

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Nakagawa, Shohei, Angga Afrinaldi, Toshifumi Kakiuchi, et al. "Microstructural Modification of AZ91 Magnesium Alloy Using Friction Stir Processing and Carbon Fibers." Materials Science Forum 886 (March 2017): 55–58. http://dx.doi.org/10.4028/www.scientific.net/msf.886.55.

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The microstructure of cast magnesium (Mg) alloy, AZ91, was modified by a friction stir process (FSP) technique. FSP was applied to AZ91 plate with a narrow slit, in which carbon fibers (CFs) were filled. The rotating FSP tool consisting of probe and shoulder could modify the microstructure of the material by sever plastic deformation (SPD) and simultaneously disperse CFs into the matrix. Microstructural observation revealed that sever stirring of material by a tool resulted in the grain refinement due to the dynamic recrystallization and distribution of CFs into the stir zone (SZ). The distrib

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Zulkfli, Zuhairah, Zamzuri Hamedon, and Nanang Fatchurrohman. "Surface Modification on Magnesium Alloys’ Hardness and Microstructure Using Friction Stir Processing – A Review." Jurnal Teknologi 13, no. 1 (2023): 39–45. http://dx.doi.org/10.35134/jitekin.v13i1.91.

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Low density of magnesium-based alloy is one potential as the lightest structural material for light weight-high strength applications for automotive and aerospace. Severe plastic deformation (SPD) together with thermomechanical processing are proved to be a successful method for attaining desired microstructural modifications through achieving fine and highly misoriented microstructures and creating various structures to the bulk properties of magnesium alloy. The material's deformation can result in an altered microstructure that is gainful to the material's requirements. However, the poor de

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Jackson, Ben, Rob Torrens, Leandro Bolzoni, Fei Yang, Mike Fry, and Aamir Mukhtar. "Additive Manufacturing of Ti-6Al-4V with Added Boron: Microstructure and Hardness Modification." Key Engineering Materials 770 (May 2018): 165–73. http://dx.doi.org/10.4028/www.scientific.net/kem.770.165.

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Titanium alloy composites with titanium boride (TiB) discontinuous reinforcement have shown improved performance in terms of strength, stiffness, and hardness. Producing this composite through selective laser melting (SLM) can combine the advantages of freeform design with the ability to produce TiB reinforcement in-situ. In this study, SLM was used to consolidate a pre-alloyed Ti-6Al-4V (Ti64) and amorphous boron (B) powder mixture with the intent of producing 1.5wt% TiB reinforcement in a Ti64 matrix. The processing parameters of laser power and scanning speed were investigated for their eff

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Bazhenova, B. A., A. A. Tykheev, Ts Yumzhir-Uvdel, Yu Yu Zabalueva, T. S. Bychkova, and L. V. Danilova. "Modification of collagen-containing animal raw materials for use in food products." IOP Conference Series: Earth and Environmental Science 1052, no. 1 (2022): 012032. http://dx.doi.org/10.1088/1755-1315/1052/1/012032.

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Abstract The article analyzes the microstructure of collagen of animal raw materials, modified by a chemical method by exposing the tripe tissue in dry sodium bicarbonate and subsequent exposure in a solution of acetic acid to improve its technological characteristics. The objects of research were beef tripe tissue from a freshly slaughtered animal before (control) and after modification (experiment). The modification was carried out in accordance with the following scheme: sequential exposure of the tripe tissue for 60 min with sodium bicarbonate in dry form, distributed over the surface of t

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Christides, C., S. Stavroyiannis, N. Boukos, A. Travlos, and D. Niarchos. "Microstructural modification in Co/Cu giant-magnetoresistance multilayers." Journal of Applied Physics 83, no. 7 (1998): 3724–30. http://dx.doi.org/10.1063/1.366598.

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Dong, Guoping, Liaolin Zhang, Mingying Peng, et al. "Microstructural modification of chalcogenide glasses by femtosecond laser." Journal of Non-Crystalline Solids 357, no. 11-13 (2011): 2392–95. http://dx.doi.org/10.1016/j.jnoncrysol.2010.11.074.

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Noell, Philip J., Jeffrey M. Rodelas, Zahra N. Ghanbari, and Chris M. Laursen. "Microstructural modification of additively manufactured metals by electropulsing." Additive Manufacturing 33 (May 2020): 101128. http://dx.doi.org/10.1016/j.addma.2020.101128.

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Cichoń, Ewelina, Karolina Kosowska, Piotr Pańtak, Joanna P. Czechowska, Aneta Zima, and Anna Ślósarczyk. "Physicochemical Properties of Inorganic and Hybrid Hydroxyapatite-Based Granules Modified with Citric Acid or Polyethylene Glycol." Molecules 29, no. 9 (2024): 2018. http://dx.doi.org/10.3390/molecules29092018.

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This study delves into the physicochemical properties of inorganic hydroxyapatite (HAp) and hybrid hydroxyapatite–chitosan (HAp-CTS) granules, also gold-enriched, which can be used as aggregates in biomicroconcrete-type materials. The impact of granules’ surface modifications with citric acid (CA) or polyethylene glycol (PEG) was assessed. Citric acid modification induced increased specific surface area and porosity in inorganic granules, contrasting with reduced parameters in hybrid granules. PEG modification resulted in a slight increase in specific surface area for inorganic granules and a

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Tosangthum, Nattaya, Monnapas Morakotjinda, Rungtip Krataitong, Pongsak Wila, Thanyaporn Yodkaew, and Ruangdaj Tongsri. "Modification of Microstructure and Tensile Property of Sintered Fe-Cr-Mo-C Steel by Nickel Addition." Key Engineering Materials 751 (August 2017): 42–46. http://dx.doi.org/10.4028/www.scientific.net/kem.751.42.

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Nickel is one of the alloying elements promoting the formation of acicular ferrite at the expense of proeutectoid ferrite. The Ni addition reduces the steady-state nucleation rates of grain boundary ferrite allotriomorph in Fe-C-Ni alloys. Due to such reasons, Ni was added to modify the microstructure of the sintered steel, investigated in this study, with the aim of improved mechanical properties. The sintered steel, produced from pre-alloyed Fe-Cr-Mo powder mixed with 0.3 wt.% C, was modified by Ni addition and cooling rate. The alloy compositional change was performed additions of varied Ni

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Petrov, I. A., A. P. Ryakhovsky, P. Yu Predko, D. I. Mayorov, and R. S. Fedortsov. "Influence of complex modification on the structure of complex-alloyed hypereutectic silumin." PERSPEKTIVNYE MATERIALY 1 (2025): 39–51. https://doi.org/10.30791/1028-978x-2025-1-39-51.

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The work is devoted to the study of the influence of complex modification on the microstructure of complex-alloyed hypereutectic silumin of the Al – Si – Cu – Mg – Ni – Mn system. The task of the work was to determine the phase composition of the alloy in the cast state. The analysis of literature and multicomponent phase diagrams was carried out. The phase composition was studied using scanning electron microscopy (SEM), energy-dispersive X-ray spectral microanalysis and X-ray phase analysis (XRD) of the studied alloy. Various modifying elements and their modifying mechanisms are considered.

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Ralston, K. D., J. G. Brunner, S. Virtanen, and N. Birbilis. "Effect of Processing on Grain Size and Corrosion of AA2024-T3." Corrosion 67, no. 10 (2011): 105001–105001. http://dx.doi.org/10.5006/1.3647762.

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Abstract Recent works on high-purity materials have indicated that microstructural modification via grain refinement can alternately reduce or enhance corrosion, depending on the specific material-environment combination. Generally, however, a paucity of information exists in understanding how microstructural alteration and processing, in combination with grain refinement, affects corrosion. In this work, the effect of microstructural refinement on an alloy containing a high number density of precipitates and intermetallics is explored. Grain-refined AA2024-T3 (UNS A92024) samples were produce

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John, Merbin, Udaya Bhat Kuruveri, and Pradeep L. Menezes. "Laser Cladding-Based Surface Modification of Carbon Steel and High-Alloy Steel for Extreme Condition Applications." Coatings 12, no. 10 (2022): 1444. http://dx.doi.org/10.3390/coatings12101444.

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Laser cladding (LC) is a laser-based surface modification technique widely adopted to develop a thin coating or remanufacture worn-out mechanical components that work in extreme conditions. LC helps to generate superior surface properties and surface integrity on the substrate surface, improving the service life. This review paper provides a comprehensive overview of the LC process, different powder feeding methods, and the uniqueness of LC over other coating techniques. More specifically, the current state-of-the-art of the LC process on carbon steel and high-alloy steel-based mechanical comp

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Pau, C. H., L. C. Chong, and N. L. Chin. "Effects of ultrasonication on the physical properties of Herba rice grain." Food Research 9, no. 3 (2025): 275–82. https://doi.org/10.26656/fr.2017.9(3).131.

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The main cause of obesity is overconsumption. The idea of enhancing satiety and satiation is considered an effective way to control appetite and regulate energy and food intake. The principal objective of this study was to make rice healthier for consumption through texture and structure modification of rice grain using ultrasound treatment. Sonication alters the microstructure of rice grain by degradation of rice starch to manipulate the water absorption ability of rice during cooking. Greater porosity of rice grains from sonication treatment allows better water absorption. Herba rice was son

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Barmouz, Mohsen, M. K. Besharati Givi, and Jalal Jafari. "Influence of Tool pin Profile on the Microstructure and Mechanical Behavior of Cu/SiC Metal Matrix Composites Produced by Friction Stir Processing." Advanced Materials Research 154-155 (October 2010): 1761–66. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.1761.

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Friction stir processing (FSP) is a metal-working technique that causes microstructural modification and change in the upper surface of metal components. In this work the effects of tool pin profile on the microstructure and mechanical behavior of reinforced SiC particles metal matrix composites (MMCs) produced by friction stir processing were studied. Optical microscopy (OM) and Scanning electron microscopy (SEM) was employed to carry out the microstructural observations. Vickers Microhardness Machine used for microhardness evaluation. Results show that, tool pin profile play a major role in

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Kim, Hee Jin, Jun Seok Seo, Jae Hak Kim, et al. "Effect of Weld Metal Microstructure on Cold Crack Susceptibility of High Strength Weld." Materials Science Forum 580-582 (June 2008): 13–16. http://dx.doi.org/10.4028/www.scientific.net/msf.580-582.13.

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Facing the practical difficulties in reducing the diffusible hydrogen content of fluxcontaining welding consumables like flux-cored arc welding (FCAW) wires, the present study investigated the microstructural aspect to improve the hydrogen-induced cold crack (HICC) resistance of multipass weld metal of 600MPa strength. Two FCA welding wires were prepared by controlling the Ni content to give different weld microstructure, but to have similar levels of hardness and diffusible hydrogen content. HICC susceptibility of those two consumables was evaluated by 'G-BOP test' and also by 'multi-pass wel

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Hall, Ernest L., та Ami E. Berkowitz. "Microstructural defects in γ-Fe2O3 particles". Journal of Materials Research 1, № 6 (1986): 836–44. http://dx.doi.org/10.1557/jmr.1986.0836.

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The microstructure of three different types of γ-Fe2O3 particles were examined using transmission electron microscopy. These included pure γ-Fe2O3, γ-Fe2O3 that had been surface modified using Co, and γ-Fe2O3 that had been doped with Co. The major internal microstructural defects found in the particles in all of the samples were pores and antiphase boundaries. Some particles also had a very high density of dislocations and low-angle boundaries. In general, the particles could be described as single crystals with symmetric cross section. The structure is based on a tetragonal unit cell, and eac

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Dzhurinskiy, Dmitry, Abhishek Babu, Stanislav Dautov, Anil Lama, and Mayuribala Mangrulkar. "Modification of Cold-Sprayed Cu-Al-Ni-Al2O3 Composite Coatings by Friction Stir Technique to Enhance Wear Resistance Performance." Coatings 12, no. 8 (2022): 1113. http://dx.doi.org/10.3390/coatings12081113.

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An innovative hybrid process combining two effective surface modification techniques, cold spray (CS) and friction stir processing (FSP), was proposed to refine the microstructure of Cu-Al-Ni-Al2O3 composite coating material. FSP was performed under constant rpm using extensive cooling conditions to remove heat generated during the operation. Microstructural characterizations such as optical micrography (OM), scanning electron microscopy (SEM), Electron Backscatter Diffraction (EBSD), Energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) were performed to evaluate the microstr

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50

Liu, Sijia, Youngdae Kim, Jinesung Jung, Seongguk Bae, Sungho Jeong, and Keesam Shin. "Effect of Ultrasonic Shot Peening and Laser Shock Peening on the Microstructure and Microhardness of IN738LC Alloys." Materials 16, no. 5 (2023): 1802. http://dx.doi.org/10.3390/ma16051802.

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IN738LC is a conventional-cast Ni-based superalloy intended for power generation and aerospace applications. Typically, ultrasonic shot peening (USP) and laser shock peening (LSP) are utilized to enhance cracking, creep, and fatigue resistance. In this study, the optimal process parameters for USP and LSP were established by observing the microstructure and measuring the microhardness of the near-surface region of IN738LC alloys. The LSP impact region (modification depth) was approximately 2500 μm, which was much higher than the USP impact depth of 600 μm. The observation of the microstructura

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