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Journal articles on the topic 'Titanium alloys – Metallography'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Chrapoński, Jacek, and Wojciech Szkliniarz. "Quantitative metallography of two-phase titanium alloys." Materials Characterization 46, no. 2-3 (2001): 149–54. http://dx.doi.org/10.1016/s1044-5803(01)00117-6.

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2

Kruchek, Viktor, and Pavel Dvorkin. "Perspectives of using the titanium alloys for heat stressed parts." Bulletin of scientific research results, no. 1 (March 20, 2016): 66–71. http://dx.doi.org/10.20295/2223-9987-2016-1-66-71.

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Objective: To examine the perspectives of using the titanium alloys for diesel motors design and for development of new construction materials for improvement of reliability and life time of forced diesels. Methods: Metallography and X-ray microanalysis were used for titanium allows examination. Results: It was found, that using of titanium allows for train diesel motor piston design would increase the elasticity of the piston for 8%, and decreases the elongation under high temperatures (up to 700 °С). Practical importance: Using of titanium alloys improves the reliability of piston operation

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3

Ardelean, Lavinia, Lucien Reclaru, Cristina Bortun, and Laura Cristina Rusu. "Joint Quality Assessment of Three Different Laser Welded Dental Alloys." Solid State Phenomena 216 (August 2014): 63–66. http://dx.doi.org/10.4028/www.scientific.net/ssp.216.63.

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The aim of this study is to assess the quality of laser welded joints, by different methods such as: scanning electronic microscopy, metallography, microhardness testing, spectrographic and radiographic analyses. The alloys assessed are a titanium-based alloy used in manufacturing prefabricated pieces for implantology, a standard AuPd alloy for the metallo-ceramic technique and a Cr-Co-Mo alloy used for manufacturing the metallic components of partial dentures. The conclusion of the testing is that laser welded joints are generally mechanically satisfactory. Laser is best suitable to weld tita

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4

Fleißner-Rieger, C., T. Pogrielz, D. Obersteiner, T. Pfeifer, H. Clemens, and S. Mayer. "An Additively Manufactured Titanium Alloy in the Focus of Metallography." Practical Metallography 58, no. 1 (2021): 4–31. http://dx.doi.org/10.1515/pm-2020-0001.

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Abstract Additive manufacturing processes allow the production of geometrically complex lightweight structures with specific material properties. However, by contrast with ingot metallurgy methods, the manufacture of components using this process also brings about some challenges. In the field of microstructural characterization, where mostly very fine structures are analyzed, it is thus indispensable to optimize the classic sample preparation process and to furthermore implement additional preparation steps. This work focuses on the metallography of additively manufactured Ti‑6Al‑4V component

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5

Jiang, Bin, Yu Can Fu, Zheng Cai Zhao, Bo Ping, Hai Ning Wang, and Wen Feng Ding. "Experimental Study on Profile Machining of Titanium Alloys with Superabrasive Tools." Advanced Materials Research 1136 (January 2016): 60–65. http://dx.doi.org/10.4028/www.scientific.net/amr.1136.60.

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Electroplated profiled superabrasive grinding wheels which integrate both advantages of grinding and profile milling have been widely used in the machining process the wide chord hollow fan blade rabbets made of Ti-6Al-4V alloy. However, the employment of these tools has been impeded by drastic forces and thermal damage. In order to investigate the variation regularities of grinding forces and temperature with different machining parameters, experiments were carried out with single layer electroplated CBN grinding wheels. Grinding forces and temperature were measured and analyzed. Meanwhile, t

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6

Bhola, Rahul, Shaily M. Bhola, Brajendra Mishra, Reed Ayers, David L. Olson, and Timothy Ohno. "Cellular Response of Titanium and Its Alloys as Implants." Journal of Oral Implantology 37, no. 4 (2011): 387–99. http://dx.doi.org/10.1563/aaid-joi-d-09-00075.1.

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Abstract The cellular response of osteocytes to commercially pure titanium (α) and its alloys (α + β and β) has been tested in a culture media, and the results have been supplemented by analyses from various techniques such as inductively coupled plasma atomic emission spectroscopic (ICP-AES) analysis, X-ray photoemission spectroscopy (XPS), scanning electron microscopy (SEM), metallography, and electrochemical measurements. These results have been correlated with respect to the presence of various alloying elements in these alloys to qualify them for human application. The newer β alloys have

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7

Astafeva, Natalia A., Andrey A. Balanovskiy, and Anna A. Pershina. "A Study of the Influence of Local Heat Treatment on the Structure of Welded Titanium Pipelines." Defect and Diffusion Forum 410 (August 17, 2021): 37–41. http://dx.doi.org/10.4028/www.scientific.net/ddf.410.37.

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The article analyzes the results of a study of the influence of zonal heat treatment on the structure of welded joints of pipeline elements made of titanium alloys Ti-3.5Al-1.5Mn. In the manufacture of such structures, the TIG welding method is used to join pipe elements, after which the heat treatment method can be used to relieve residual stresses. The experiments have confirmed the effectiveness of zonal heat treatment preceded by welding. It was revealed that for welded joints made of titanium alloys, heat treatment can stabilize the structure. In experiments conducted by the method of opt

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8

Mitchell, Ryan, Andrew B. Short, Timotius Pasang, and Guy Littlefair. "Characteristics of Electron Beam Welded Ti & Ti Alloys." Advanced Materials Research 275 (July 2011): 81–84. http://dx.doi.org/10.4028/www.scientific.net/amr.275.81.

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Similar and dissimilar butt joint welds comprising combinations of commercially pure grade 4 titanium (CP-Ti), Ti-6Al-4V (Ti-64) and Ti-5Al-5V-5Mo-3Cr (Ti-5553) were created using the electron beam process. The resultant welds were studied by means of metallography, optical microscopy, mechanical testing and scanning electron microscopy. Mechanical testing was performed on welded samples to study the joint integrity and fracture characteristics. A scanning electron microscope investigation was performed on the fracture surface to reveal their fracture modes. While all weldments were crack free

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9

Gao, Xiongxiong, Weidong Zeng, Qingyang Zhao, Saifei Zhang, Mingbing Li, and Zhishou Zhu. "Acquisition of recrystallization information using optical metallography in a metastable beta titanium alloy." Journal of Alloys and Compounds 727 (December 2017): 346–52. http://dx.doi.org/10.1016/j.jallcom.2017.08.141.

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10

Mayer, S., D. Schimbäck, R. Wartbichler, D. Wimler, and H. Clemens. "Metallography of Intermetallic Titanium Aluminides – the (Additive) Manufacturing Makes the Difference." Practical Metallography 56, no. 9 (2019): 567–84. http://dx.doi.org/10.3139/147.110622.

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11

de Oliveira, Cristyane Silva Santos, Alexandre Antunes Ribeiro, Alexandre Antunes Ribeiro, Roseli Marins Balestra, Sandro Griza, and Marize Varella de Oliveira. "Characterization of Porous Ti-35Nb Alloy Sintered at Different Temperatures for Implant Applications." Materials Science Forum 802 (December 2014): 496–500. http://dx.doi.org/10.4028/www.scientific.net/msf.802.496.

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Studies show that porous titanium alloys improve osseointegration at the implant-bone interface, since they induce new bone tissue formation inside the pores providing a better mechanical stability. In this work, porous Ti-35Nb samples were manufactured by powder metallurgy for orthopedic implant application. The titanium and niobium powders were mixing with a pore former additive and then uniaxially and cold-isostatically compacted. The samples sintering were performed at 1200oC and 1300oC. Samples characterization was performed by Scanning Electron Microscopy with Energy Dispersive X-Ray (SE

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12

Morton, Allan J., Brigitte Décamps, Mark A. Gibson, and Alan Wolfenden. "Microstructural stability in rapidly solidified ternary iron aluminides." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (1990): 988–89. http://dx.doi.org/10.1017/s0424820100178070.

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Iron aluminides containing ternary additions of Cr, Si and other alloying elements offer good oxidation and sulphidation resistance at a relatively low cost but these alloys have only moderate strength at elevated temperatures and are of limited ductility. The generation of a distribution of fine dispersoids throughout the matrix of these alloys can provide increased strength and also improve ductility by reducing grain size.We report a study of the microstructural stability of rapidly solidified strip of iron aluminides containing chromium and minor additions of both titanium and boron. As ca

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13

Zuev, Lev B., Galina V. Shlyakhova, and Svetlana A. Barannikova. "Effect of Radial Forging on the Microstructure and Mechanical Properties of Ti-Based Alloys." Metals 10, no. 11 (2020): 1488. http://dx.doi.org/10.3390/met10111488.

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Radial forging is a reliable way to produce Ti alloy rods without preliminary mechanical processing of their surface, which is in turn a mandatory procedure during almost each stage of the existing technology. In the present research, hot pressing and radial forging (RF) of the titanium-based Ti-3.3Al-5Mo-5V alloy were carried out to study the specifics of plasticized metal flow and microstructural evolution in different sections of the rods. The structural analysis of these rods was performed using metallography and X-ray diffraction techniques. The X-ray diffraction reveals the two-phase sta

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14

Belan, Juraj. "Quantitative Evaluation of Alitize Coating on ŽS6K Ni-Base Superalloy." Materials Science Forum 782 (April 2014): 578–83. http://dx.doi.org/10.4028/www.scientific.net/msf.782.578.

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The aerospace industry is one of the biggest consumers of advanced materials because of its unique combination of mechanical and physical properties and chemical stability. Highly alloyed stainless steel, titanium alloys and nickel based superalloys are mostly used for aerospace applications. The aim of the work is to evaluate protective Al Si coating applied by diffusion annealing on substrate, Ni base superalloy ZS6K. This superalloy is used for turbine blade production in aero jet engine DV 2. Using of protective alitize coating provides an increasing of heat resistance of superalloy surfac

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15

Halici, Dilek, and Cecilia Poletti. "Flow Localization Modelling in Ti Alloys and Ti Matrix Composites." Key Engineering Materials 651-653 (July 2015): 3–8. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.3.

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Titanium-based alloys are commonly applied to aerospace, medicine and energy due mainly to their high specific mechanical properties and high corrosion resistance. Reinforcement with particles further improves their specific strength and stiffness. In previous studies, the hot formability of both unreinforced Ti6Al6V2Sn alloy, and reinforced with 12%vol of TiC particles was analyzed by hot compression tests carried out by means of Gleeble device and metallography. It was observed that the hot workability of these materials is limited at given forming conditions by non-desirable shear bands, vo

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16

Das, G., C. E. Harper, R. Omlor, and R. Lewis. "Metallography of Titanium Based Metal Matrix Composites with Silicon Carbide Fibers as Reinforcement / Metallographie von Metallmatrix-Verbundwerkstoffen auf Titanbasis mit Siliziumkarbidfasern als Verstärkung." Practical Metallography 26, no. 9 (1989): 443–54. http://dx.doi.org/10.1515/pm-1989-260902.

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17

Eliaz, Noam, Nitzan Foucks, Dolev Geva, et al. "Comparative Quality Control of Titanium Alloy Ti–6Al–4V, 17–4 PH Stainless Steel, and Aluminum Alloy 4047 Either Manufactured or Repaired by Laser Engineered Net Shaping (LENS)." Materials 13, no. 18 (2020): 4171. http://dx.doi.org/10.3390/ma13184171.

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Additive manufacturing attracts much interest for manufacturing and repair of structural parts for the aerospace industry. This paper presents comparative characterization of aircraft items made of Al 4047 alloy, Ti-6Al-4V alloy, and 17-4 precipitation hardened (PH) (AISI 630) stainless steel, either manufactured or repaired by laser engineered net shaping (LENS). Chemical analysis, density, and surface roughness measurements, X-ray micro-computed tomography (μ-CT) analysis, metallography, and micro-hardness testing were conducted. In all three materials, microstructures typical of rapid solid

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18

Wen, Yu Ren, Yong Liu, Dong Hua Liu, and Bei Tang. "Preparation and Thermal Stability of a Mechanically Alloyed Oxide Dispersion Strengthened Ferritic Steels." Materials Science Forum 715-716 (April 2012): 605–10. http://dx.doi.org/10.4028/www.scientific.net/msf.715-716.605.

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Oxide dispersion strengthened ferritic steels (so-called nanostructured ferritic alloys, NFAs), which are candidate structural materials in next generation nuclear power plant, have attracted much attention during recent years. In this work, iron oxide as oxygen carrier and titanium, yttrium hydrides were together mechanically milled with Fe-14Cr-3W gas-atomized powder. The thermal stability and recrystallization behaviour of the as-milled ferritic powder were studied by means of metallography, SEM, TEM and microhardness test. After ball milling for 48h, complete solid solution of bcc-Fe was f

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19

Kolokol’tsev, V. M., E. V. Petrochenko, and O. S. Molochkova. "Influence of boron modification and cooling conditions during solidification on structural and phase state of heat- and wear-resistant white cast iron." Izvestiya. Ferrous Metallurgy 62, no. 11 (2019): 887–93. http://dx.doi.org/10.17073/0368-0797-2019-11-887-893.

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The paper is devoted to examination of the eﬀect of boron modification and temperature conditions for metal cooling in a mold on phase composition, morphology and chemical composition of structural components of heatand wear-resistant white cast iron of Fe – C– Cr– Mn – Ni – Ti–Al – Nb system. The phase composition of the metallic base changed from the dualphase (α- and γ-phases) to the completely single-phase (γ-phase). Boron modification influenced on the type of secondary carbides, while secondary hardening in a mold occurs through extraction of dispersed niobium carbides (without boron, bu

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20

Du, Dong Xing, Dao Xin Liu, Yu Feng Sun, Jin Gang Tang, and Xiao Hua Zhang. "The Effects of Machined Workpiece Surface Integrity on the Fatigue Life of TC21 Titanium Alloy." Advanced Materials Research 503-504 (April 2012): 382–89. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.382.

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In this paper, the influence of different machining methods (including rough turning, finish turning, and longitudinal polishing after finish turning) on rotating bending fatigue properties of TC21 which belonged to a new ultra high strength titanium alloy was studied. The influence of machining methods on surface integrity of TC21 titanium alloy was measured by using surface profile measurement, scanning electron microscopy, metallography microscope, micro-hardness instrument and X-ray diffraction residual stress analyzer. And fatigue fractography of specimens was further investigated. Then t

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21

Krawczyk, Janusz, Tomasz Tokarski, Aneta Łukaszek-Sołek, Robert Dąbrowski, Tomasz Śleboda, and Oleksandr Lypchanskyi. "Dynamic Recrystallization in Titanium Alloys." Key Engineering Materials 687 (April 2016): 47–54. http://dx.doi.org/10.4028/www.scientific.net/kem.687.47.

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The results of the investigations on five different titanium alloys were presented in this paper. Two two-phase α+β alloys (Ti-6Al-4V and Ti-6Al-2Sn-4Zr-6Mo) as well as two β alloys (Ti-10V-2Fe-3Al and Ti-3Al-8V-6Cr-4Mo-4Zr) were studied. Moreover, Ti-48Al-2Cr-2Nb intermetallic alloy (γ alloy) was also investigated. All investigated alloys were tested in compression on Gleeble thermomechanical simulator under various strain rate and temperature conditions. Metallographic observations of the microstructure of tested samples allowed determining thermomechanical conditions under which dynamic rec

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22

Seidel, F., H. R. Stock, and P. Mayr. "Metallographic investigations of nitrogen-implanted titanium alloys." Surface and Coatings Technology 98, no. 1-3 (1998): 1174–80. http://dx.doi.org/10.1016/s0257-8972(97)00148-5.

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23

Rosca, Julia Claudia, Ecaterina Vasilescu, Daniel Mareci, Steliana Ivanescu, and Agustin Santana Lopez. "Structural Characteristics and Anticorrosive Properties of a Titanium Bioalloy." Revista de Chimie 59, no. 3 (2008): 331–35. http://dx.doi.org/10.37358/rc.08.3.1758.

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In this paper, different thermal-mechanical treatments were applied on Ti6Al4V alloy and structural characteristics were correlated with anticorrosive properties in Ringer-Brown solution. Alloys present self-passivation with more electropositive corrosion potentials than of titanium; all electrochemical parameters have improved values, resulting the beneficial effect of the thermal treatment. Both alloys and base metal are very resistant in Ringer-Brown solution. Metallographic studies show that the thermal-mechanical treatments increased the corrosion resistance of the alloys in physiological

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24

Grabarczyk, Jacek, Damian Batory, Witold Kaczorowski, et al. "Comparison of Different Thermo-Chemical Treatments Methods of Ti-6Al-4V Alloy in Terms of Tribological and Corrosion Properties." Materials 13, no. 22 (2020): 5192. http://dx.doi.org/10.3390/ma13225192.

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Titanium and its alloys are characterized by high mechanical strength, good corrosion resistance, high biocompatibility and relatively low Young’s modulus. For many years, one of the most commonly used and described titanium alloys has been Ti-6Al-4V. The great interest in this two-phase titanium alloy is due to the broad possibilities of shaping its mechanical and physico-chemical properties using modern surface engineering techniques. The high coefficient of friction and tendency to galling are the most important drawbacks limiting the application of this material in many areas. In this rega

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Rosca, JC Mirza, J. Rodriguez Castro, and A. Santana Lopez. "Metallographic Characterization of Some New Bioactive Implant Titanium Alloys." Microscopy and Microanalysis 12, S02 (2006): 1616–17. http://dx.doi.org/10.1017/s1431927606062799.

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26

Henriques, V. A. R., A. C. S. M. Dutra, and C. A. A. Cairo. "Production of Aerospace Tial Intermetallics for High Temperature Applications by Powder Metallurgy." Materials Science Forum 727-728 (August 2012): 44–49. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.44.

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During the recent years, alloys based on the intermetallic compound TiAl have attracted a considerable interest as potential competitors to steels and superalloys. Gamma-TiAl alloys are potential replacements for nickel and conventional titanium alloys in hot sections of turbine engines, as well as in orbital platform vehicles. The alloy design and efficient routes of TiAl processing are important technological challenges. Powder metallurgy is a near net shape process that allows the parts production with complex geometry at low costs. In this work, samples of Ti-48Al-2Cr-2Nb (at.%) were prepa

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27

Winiowski, A., and D. Majewski. "Brazing of Titanium with Aluminium Alloys." Archives of Metallurgy and Materials 62, no. 2 (2017): 763–70. http://dx.doi.org/10.1515/amm-2017-0114.

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Abstract This study presents results of vacuum diffusion brazing of Grade 2 titanium with 6082 (AlMg1Si0.6Cu0.3) aluminium alloy using B-Ag72Cu-780 (Ag72Cu28) grade silver brazing metal as an interlayer. Brazed joints underwent shear tests, light-microscopy-based metallographic examinations and structural examinations using scanning electron microscopy (SEM) and X-ray energy dispersive spectrometry (EDS). The highest quality and shear strength of 20 MPa was characteristic of joints brazed at 530°C with a 30-minute hold. The structural examinations revealed that in diffusion zone near the bound

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Yin, Ming Chu, Tao Gao, and En Zhi Chen. "Forecast and Analysis of Transformation Point of TC6 Titanium Alloy." Advanced Materials Research 194-196 (February 2011): 1247–52. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.1247.

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Transformation point of titanium alloy is an important material parameter in hot forming and heat treatment for titanium alloy. Used the transformation points of TC6 titanium alloy determined by metallographic method as desired outputs, a model for forecasting the transformation point of TC6 titanium alloy was established using MATLAB neural network toolbox under the guidance of back propagation neural network. Used the established model to forecast the transformation point of TC6 titanium alloy and analyze the effects of the contents of nine elements on the transformation point of TC6 titaniu

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29

Geng, Lin, Bin Xu, Y. T. Li, Ai Bin Li та Gui Song Wang. "Characterization of (α+β)/β Transformation in a TC11 Titanium Alloy". Solid State Phenomena 127 (вересень 2007): 91–96. http://dx.doi.org/10.4028/www.scientific.net/ssp.127.91.

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(α+β)/β phase transformation temperature of a TC11 titanium alloy was confirmed to be 1035°C, which was obtained by three methods including the calculation method, differential scanning calorimetry and metallographic techniques. Based on this result, annealing treatments below and above the (α+β)/β phase transformation temperature were carried out, and the microstructure of the TC11 alloys before and after annealing treatment was analyzed by SEM. The result showed that conventional annealing below 1035°C does not change the Widmanstaten structure of TC11 alloy, though the thickness of α lamell

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30

Wisnujati, Andika, and Lalu Alpan Hafiz. "Analisis Sifat Fisik dan Mekanik Poros Berulir (Screw) Untuk Pengupas Kulit Ari Kedelai Berbahan Dasar Aluminium Bekas dan Piston Bekas." INTEK: Jurnal Penelitian 4, no. 1 (2017): 1. http://dx.doi.org/10.31963/intek.v4i1.99.

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Aluminum alloys in this study using a mixture of aluminum profiles and former piston. Former piston is used to get the high enough of element Si. The addition of TiB element (Titanium-Boron) as much as 0.02% at the time of casting expected to improve the mechanical and physical character of aluminum, so that expected the aluminum alloy has a strength that is much better than without the addition of any element. Aluminum alloy to manufacture screw will be casted by using sand molds on three types of variations mold temperature 200oC, 300oC and 400oC. The Test were conducted to determine the mec

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31

Różański, M., D. Majewski, and K. Krasnowski. "Comparison of Microstructure and Mechanical Properties of Induction and Vacuume Brazed Joint of Titanium Via Copper and Ag-Cu Eutectic Filler Metal / Mikrostruktura I Właściwości Mechaniczne Połączeń Tytanu Lutowanych Indukcyjnie I Próżniowo Z Użyciem Spoiwa Miedzianego I Eutektycznego Ag-Cu." Archives of Metallurgy and Materials 60, no. 4 (2015): 2593–98. http://dx.doi.org/10.1515/amm-2015-0419.

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This study presents the basic physico-chemical properties and describes the brazeability of titanium. The work contains the results of macro and microscopic metallographic examination as well as the results of strength-related tests of vacuum and induction brazed joints made of Grade 2 technical titanium using the Cu 0.99 and Ag 272 filler metal interlayers and F60T flux intended for titanium brazing in the air atmosphere.

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32

Li, Liang Liang, and Yu Wen Sun. "Experimental Investigation on Surface Integrity in Grinding Titanium Alloys with Small Vitrified CBN Wheel." Applied Mechanics and Materials 117-119 (October 2011): 1483–90. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.1483.

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Titanium alloys have been widely used in aerospace and manufacturing industry because of their unique high strength-weight ratio, fracture resistance, and superior resistance to corrosion. In this paper, a series of experiments were carried out to research the surface integrity in grinding Titanium alloy TC11 on a milling centre with small vitrified bond CBN wheel. Nine runs involved in the orthogonal array are designed in accordance with three factors at three levels. The surface roughness Ra 0.72 um and Rz 4.73 um are obtained. Subsequently ANOVA is employed to analyze the relative importanc

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33

Cheng, Jun, Ming He Chen, and Zhi Shou Zhu. "The Quantitative Relationships between Microstructure and Damage Tolerance of TC21 Titanium Alloy." Materials Science Forum 770 (October 2013): 335–40. http://dx.doi.org/10.4028/www.scientific.net/msf.770.335.

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Mechanical properties, including fracture toughness and the fatigue crack propagation, have been investigated for two different microstructures in TC21 titanium alloy. The characteristic parameters of lamellar microstructure were measured through quantitative metallography. On the basis of analyzing the influence of microstructure on the fracture toughness of TC21 titanium alloy, the mathematical models between the fracture toughness and microstructure parameters were constructed. Furthermore, the relationship between fatigue crack growth rate and mean length values of α lamellar have been als

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34

Nugraha, Hikmat, Pradoto Ambardi, and Djoko Hadi Prajitno. "EFFECT OF TREATMENT SOLUTION ON THE MICROSTRUCTURE AND MICROHARDNESS OF TERNARY Ni-Al-Nb ALLOY DOPED WITH TITANIUM." Jurnal Sains Materi Indonesia 22, no. 1 (2021): 1. http://dx.doi.org/10.17146/jsmi.2020.22.1.5526.

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EFFECT OF TREATMENT SOLUTION ON THE MICROSTRUCTURE AND MICROHARDNES OF TERNARY Ni-Al-Nb ALLOY DOPED WITH TITANIUM. Nickel-based superalloys have been widely used in various applications, which require high strength at high temperatures. Most types of these superalloys is age-hardenable because they have γ’ particles' chemical composition Ni3(Al, Ti) in γ’-phase matrix. This research will be used alloy Ni-Al-Nb added alloying elements Ti. This research was conducted to study the mechanical properties, microstructure conditions in some alloys Ni-Al-Nb added distinction Titanium element (0,5% and

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35

Havlík, Petr, Jan Kouřil, Rudolf Foret, Ivo Dlouhy, Norbert Enzinger, and Christopher Wiednig. "Evaluation of Weldability of Titanium Alloy Ti-6Al-4V and Aluminum Alloy 6061 Produced by Electron Beam Welding." Materials Science Forum 879 (November 2016): 714–19. http://dx.doi.org/10.4028/www.scientific.net/msf.879.714.

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Aluminum and titanium alloys are among the most important and the most frequently used construction materials due to their physical and mechanical properties. Especially in the automotive and aerospace industry these materials allow to reduce the weight of structure which leads to reducing fuel consumption and environment pollution. These materials are often used together which leads to problems with junction between these materials. In addition to the mechanical joints, there is an effort to produce quality welded joints. Series of works focused to welding of Al/Ti joints by conventional and

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36

Peretyagin, Pavel Yurievich, Vasily Petrovich Bolbukov, Natalia Yurievna Cherkasova, and Alexander Victorovich Kabanov. "Main Technological Parameters Influence of Selective Electron Beam Melting on Properties of Thin-Walled Titanium Alloy Samples." Materials Science Forum 834 (November 2015): 13–20. http://dx.doi.org/10.4028/www.scientific.net/msf.834.13.

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Selective electron beam melting has been considered as the most advanced method of additive manufacturing of workpieces made of titanium and titanium-based alloys for the aircraft industry. The impact of basic technological parameters on the thickness of thin walls obtained with the use of selective electron beam melting has considered. Metallographic examination of the experimental samples has been performed.

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37

Duriagina, Z. A., R. O. Tkachenko, A. M. Trostianchyn, et al. "Determination of the best microstructure and titanium alloy powders properties using neural network." Journal of Achievements in Materials and Manufacturing Engineering 1, no. 87 (2018): 25–31. http://dx.doi.org/10.5604/01.3001.0012.0736.

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Purpose: Create a software product using a probabilistic neural network (PNN) and database based on experimental research of titanium alloys to definition of the best microstructure and properties of aerospace components. Design/methodology/approach: The database creation process for artificial neural network training was preceded by the investigation of the granulometric composition of the titanium powder alloys, study of microstructure, phase composition and evaluation of micromechanical properties of these alloys by the method of material plasticity estimation in the conditions of hard pyra

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Romberg, J., J. Freudenberger, J. Scharnweber, et al. "Metallographic Preparation of Aluminium-Titanium Composites." Practical Metallography 50, no. 11 (2013): 739–53. http://dx.doi.org/10.3139/147.110259.

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Orlova, L. M., A. D. Lemesh, G. P. Belozub, and T. V. Filatova. "Metallographic study of ?-solid solution decomposition for titanium alloy VT22." Metal Science and Heat Treatment 28, no. 1 (1986): 73–77. http://dx.doi.org/10.1007/bf00735554.

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Andrade, Soares, Nobrega, Hilário, and Santos. "Characterization Techniques of a Shape Memory Nickel Titanium Alloy." Proceedings 38, no. 1 (2020): 15. http://dx.doi.org/10.3390/proceedings2019038015.

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This paper presents a characterization processes study of metallic alloys, more specifically the shape memory alloys (SMA) composed by Nickel and Titanium (NiTinol). Two different wire suppliers were studied, starting with metallographic analysis until observe the contours of the grain wires. Differential scanning calorimetry (DSC) test was also performed to obtain phase transformation temperatures of the NiTinol alloys. Finally, after several tensile tests, some results were obtained for stresses, strains, elasticity modules and maximum rupture deformation.

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Henriques, V. A. R., E. T. Galvani, Carlos Alberto Alves Cairo, M. L. A. Graça, and A. C. S. M. Dutra. "Microstructural Investigation of Routes for Gamma Titanium Aluminides Production by Powder Metallurgy." Key Engineering Materials 704 (August 2016): 204–13. http://dx.doi.org/10.4028/www.scientific.net/kem.704.204.

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The alloy design and efficient routes of TiAl processing are important technological challenges for the development of new aerospace systems. Gamma-TiAl alloys are potential replacements for nickel and conventional titanium alloys in hot sections of turbine engines, as well as in sub-structures of orbital platform vehicles. Powder metallurgy (P/M) of Ti-based alloys may lead to the obtainment of components having weak-to-absent textures, uniform grain structure and higher homogeneity compared with conventional wrought products. This paper aims to investigate the microstructural evolution and d

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Winiowski, A., and D. Majewski. "Braze Welding TIG of Titanium and Aluminium Alloy Type Al – Mg." Archives of Metallurgy and Materials 61, no. 1 (2016): 133–42. http://dx.doi.org/10.1515/amm-2016-0025.

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The article presents the course and the results of technological tests related to TIG-based arc braze welding of titanium and AW-5754 (AlMg3) aluminium alloy. The tests involved the use of an aluminium filler metal (Al99.5) and two filler metals based on Al-Si alloys (AlSi5 and AlSi12). Braze welded joints underwent tensile tests, metallographic examinations using a light microscope as well as structural examinations involving the use of a scanning electron microscope and an X-ray energy dispersive spectrometer (EDS). The highest strength and quality of welds was obtained when the Al99.5 fille

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Małecka, Joanna, and Dariusz Rozumek. "Metallographic and Mechanical Research of the O–Ti2AlNb Alloy." Materials 13, no. 13 (2020): 3006. http://dx.doi.org/10.3390/ma13133006.

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This paper provides the test results of the fatigue crack growth in notched specimens under tension. The tests were performed on plane specimens with external blunt two-sided notches at room temperature. The tested material was O–Ti2AlNb titanium alloy. The tests were carried out at constant load value and constant stress ratio R = 0. The tests were done at the fatigue stand Instron under the loading change frequency of 25 Hz. The results of mechanical and structural tests of the examined alloy were presented. Scanning electron microscopy (SEM) was used in metallography, which allowed for the

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Acquesta, Annalisa, and Tullio Monetta. "As-Built EBM and DMLS Ti-6Al-4V Parts: Topography–Corrosion Resistance Relationship in a Simulated Body Fluid." Metals 10, no. 8 (2020): 1015. http://dx.doi.org/10.3390/met10081015.

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Machined devices made of titanium or titanium alloys are widely used in biomedical applications. Recently, additive manufacturing technologies (AM) were proposed to reduce the cost of parts and customise their shape. While several researchers have studied the characterisation of the machined surfaces of AM products, less attention has been focused on the study of the surfaces of as-produced parts. The aim of this study was to compare the surface and bulk properties of Ti-6Al-4V alloy products obtained using two types of AM—i.e., electron beam melting and direct metal laser sintering—in compari

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Różański, Maciej, Krzysztof Krasnowski та Janusz Adamiec. "Diffusion Vacuum Brazing of TiAl48Cr2Nb2 Casting Alloys Based on TiAl (γ) Intermetallic Compound Using Ag-Cu-Ti Braze Alloy". Solid State Phenomena 211 (листопад 2013): 141–48. http://dx.doi.org/10.4028/www.scientific.net/ssp.211.141.

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Fast-developing such advanced industries as aviation, automotive and power-generation are increasing demand for new engineering materials which could resists such extreme operation conditions as high operating temperature, considerable stresses or operation in fume-affected environment. Highly desirable properties of such materials should include high hardness and strength, corrosion resistance (also when exposed to aggressive fumes) but also, first of all, low density. However such materials also requirements engineering methods to ensure obtain of good sound joints. Results in growing intere

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Xiong, A. M., Wei Chao Huang, S. H. Chen, and Miao Quan Li. "FE Simulation of Grain Size during the Isothermal Forging of a TC6 Titanium Alloy Disc." Materials Science Forum 475-479 (January 2005): 3177–80. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.3177.

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Isothermal compression tests were conducted at Thermecmaster-Z simulator, and grain size of the prior a phase was measured at a Leica LABOR-LUX12MFS/ST microscope for quantitative metallography. A methodology to establish a constitutive equation with grain size was proposed with the help of the experimental results. Combining FEM and the present constitutive equation at high temperature deformation, grain size of the prior a phase was simulated during the isothermal forging of a TC6 titanium alloy disc. The present results illustrate grain size and distribution of the prior a phase in the forg

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Antonowicz, Magdalena, Roksana Kurpanik, Witold Walke, Marcin Basiaga, Jozef Sondor, and Zbigniew Paszenda. "Selected Physicochemical Properties of Diamond Like Carbon (DLC) Coating on Ti-13Nb-13Zr Alloy Used for Blood Contacting Implants." Materials 13, no. 22 (2020): 5077. http://dx.doi.org/10.3390/ma13225077.

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Despite high interest in the issues of hemocompatibility of titanium implants, particularly those made of the Ti-13Nb-13Zr alloy, the applied methods of surface modification still do not always guarantee the physicochemical properties required for their safe operation. The factors that reduce the efficiency of the application of titanium alloys in the treatment of conditions of the cardiovascular system include blood coagulation and fibrous proliferation within the vessel’s internal walls. They result from their surfaces’ physicochemical properties not being fully adapted to the specifics of t

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Pang, Li Jun, Tan Ji Yu, and Zong Ling Cao. "Effect of the Heat Treatment Process on Machinability of TC4 Alloy." Advanced Materials Research 320 (August 2011): 64–68. http://dx.doi.org/10.4028/www.scientific.net/amr.320.64.

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The orthogonal design approach is adopted to perform the cutting force experiment. It is based on the three typical metallographic phases of TC4 titanium alloy. The multiple-variable linear regression equations of the cutting force are built in term of the main technical parameters using the MINITAB software. Regression analysis is done, and an accurate empirical formula of TC4 cutting force is established. It is also optimized the cutting process parameters. The heat treatment’s technical laws of cutting force of TC4 titanium alloy are further undertaken, which provide a theoretical basis for

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Huo, Wen Guo, Jiu Hua Xu, and Yu Can Fu. "Grinding Force and Surface Integrity on Dry Belt Grinding of TA15 Titanium Alloys." Key Engineering Materials 416 (September 2009): 269–73. http://dx.doi.org/10.4028/www.scientific.net/kem.416.269.

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This paper was dedicated to elucidate an investigation of grinding force and workpiece surface of Titanium alloy TA15 in dry grinding by using zirconia alumina belts. The grinding forces were measured by KISTLER 9265B dynamometer. Machined surface morphology and the metallographic structure were observed using 3D viewer microscope. Surface roughness was measured using Mahr Perthometer M1 instrument. The surface microhardness for ground surface was detected by HVS-1000 instrument. The good results were obtained, as follows: low surface roughness, high surface hardness, no microstructural damage

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Mali, Vjacheslav I., Iuliia N. Maliutina, and K. A. Skorokhod. "Microstructure and Strength of Explosively Welded Titanium/Ni-Based Alloy Composite with Cu/Ta as Interlayer." Applied Mechanics and Materials 682 (October 2014): 21–24. http://dx.doi.org/10.4028/www.scientific.net/amm.682.21.

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In current research composite copper/tantalum were used as interlayer for explosive welding of titanium and Ni-based alloy sheets. Defects such as cracks coupled with brittle intermetallics compounds were not detected at the interface of dissimilar materials by metallographic analysis. Strength test of obtained composite material reveals growth of yield strength in 2 times in comparison with Ni-based alloy.

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