Results 21 to 30 of about 11,738 (294)
Mechanical and Physical Characterizations of a Three-Phase TiAl Alloy during Near Isothermal Forging
Crystals, 2022 TiAl alloy is a high temperature structural material with excellent comprehensive properties in the range of 750–900 °C. However, its engineering application is limited by its poor plasticity and hot working properties at room temperature.
Xuexia Zhao +8 more
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Ti and TiAl melting with a semi-industrial PAMCHR [PDF]
MATEC Web of Conferences, 2020 Upscaling from laboratory trials to industrialization is a critical step in the development of new metallurgical processes and products. Pilot trials are an important way to provide data that can be used to better understand and model the industrial ...
Ruby-Meyer Fabienne +3 more
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Effect of C Addition on as-Cast Microstructures of High Nb Containing TiAl Alloys
Metals, 2019 Two high Nb-containing TiAl alloys, Ti46.6Al7.5Nb0.5Si0.2B (Alloy A) and Ti46.1Al7.4Nb5C0.5Si0.2B (Alloy B), were prepared by graphite mold casting. As-cast microstructures of the two alloys were characterized to clarify the effect of carbon addition ...
Jinhu Liu +4 more
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Improving Forging Outcomes of Cast Titanium Aluminide Alloy via Cyclic Induction Heat Treatment
Metals, 2023 The objective of this research was to improve the forging outcome of peritectic solidifying cast titanium aluminide (TiAl) 4822 alloy (Ti-48Al-2Nb-2Cr at.%) in hot isostatic pressed and homogenised (HH) condition using cyclic induction heat treatment ...
Sean Peters +3 more
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Aluminium evaporation during ceramic crucible induction melting of titanium aluminides [PDF]
, 2013 Melting TiAl based alloys in ceramic crucibles often leads to chemical contamination, alloy heterogeneity and non-metallic inclusions. The severity of such phenomena usually depends on the nature of crucible materials, the melting stock composition and ...
Barbosa, J. +2 more
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Insight into the Ta alloying effects on the oxidation behavior and mechanism of cast TiAl alloy
Materials & DesignThe effects of Ta alloying on the isothermal oxidation behavior and mechanism of a cast Ti-48Al-3Nb-1.5Ta (at.%) TiAl alloy are investigated. It exhibits excellent oxidation resistance with mass gains of 0.95 and 1.29 mg·cm−2 after 900 °C oxidation for ...
Zitong Gao +4 more
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Microstructural degradation of Ti-45Al-8Nb alloy during the fabrication process by electron beam melting [PDF]
, 2017 This paper reports the microstructural degradation of the high Nb-TiAl alloy during the fabrication process by electron beam melting (EBM). The lamellar structure of as-EBM samples in the bottom part of the build shows significant microstructure ...
A Chatterjee +28 more
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Study on Vacuum Suction Casting for TiAl-Based Alloys
Rare Metal Materials and Engineering, 2009 Abstract A novel type of foundry method for TiAl-based alloy is presented in the present paper. The filling processes of Ti-47Al alloy sheet and blade have been studied via numerical simulation. The investigation results indicate that the filling fraction is enhanced by the increase of filling velocity and graphite throat diameter.
Su Yanqing +3 more
openaire +2 more sources
Journal of Materials Research and Technology, 2020 To study mechanism of microstructure evolution in TiAl based alloys during heat treatment, Ti44Al alloy was heat treated at 1240 °C for 0.5/1.0/2.0/2.5/3.0/5.0/7.0 h before being quenched in water. Chemical composition, phase component and microstructure
Yangli Liu +7 more
doaj +1 more source
Metals, 2021 Hot isostatic pressing (HIP) and subsequent heat-treatments (HT) are necessary for titanium aluminide (TiAl) casting components. But there are few studies carefully comparing the microstructure changes from the initial as-cast condition to the final heat-
Wen Yu +7 more
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