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2016 | OriginalPaper | Chapter

First Principles Investigation on TiAl3 Alloys Substitutively Doped with Si

Authors : Qing Du, WeiDong Hu, WangJun Peng, GuangXin Wu, WenDe Dan, JieYu Zhang

Published in: TMS 2016 145th Annual Meeting & Exhibition

Publisher: Springer International Publishing

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The site preference of Si in TiAl3 is calculated using first principles method based on Density Functional Theory. Through the analyses and comparison of the binding energy of systems with different substitution behaviors, it is shown that Si prefers to occupy the site of Al(2) and the limited solubility of Si in TiAl3 is around 12.5%. Then this article made a research on the antioxidant properties of different doped concentration of Si in TiAl3, and the result showed that the Si doping enhanced the oxidation resistance of the Ti-Al alloy.

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Metadata
Title
First Principles Investigation on TiAl3 Alloys Substitutively Doped with Si
Authors
Qing Du
WeiDong Hu
WangJun Peng
GuangXin Wu
WenDe Dan
JieYu Zhang
Copyright Year
2016
Publisher
Springer International Publishing
DOI
https://doi.org/10.1007/978-3-319-48254-5_30

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