First-principles Investigations of Atom Migration in alpha-Titanium

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	First-principles Investigations of Atom Migration in alpha-Titanium
	Zhang Lianji 1,2; Hu Qingmiao 1; Yang Rui 1
通讯作者	Zhang Lianji(ljzhang12s@imr.ac.cn)
	2017-06-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	46 页码:246-249
摘要	Titanium alloys find wide applications in aerospace industry for their high specific strength and good corrosion resistance. However, limited creep resistance may restrict their applications at high temperature. Experiments demonstrate that the steady creep activation energy is close to the effective diffusion activation energy, indicating that the atomic diffusion exerts an important effect on the creep resistance. In the present work, a first-principles method was employed to study the migration energy of various alloying atoms in a-titanium. The results show that for the atoms migrating through vacancy mechanism, the in-basal-plane migration energy decreases in the order of Al, V, Ti, Sn, Ta, Mo, Nb, Zr, whereas the out-plane migration energy decreases in the order of Al, Sn, V, Ti, Ta, Mo, Nb, Zr. For the atoms (Fe, Co, Ni) migrating through interstitial mechanism, the migration energies are quite low.
关键词	first-principles diffusion creep
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000406570100050
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/124782
专题	中国科学院金属研究所
通讯作者	Zhang Lianji
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Zhang Lianji,Hu Qingmiao,Yang Rui. First-principles Investigations of Atom Migration in alpha-Titanium[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46:246-249.
APA	Zhang Lianji,Hu Qingmiao,&Yang Rui.(2017).First-principles Investigations of Atom Migration in alpha-Titanium.RARE METAL MATERIALS AND ENGINEERING,46,246-249.
MLA	Zhang Lianji,et al."First-principles Investigations of Atom Migration in alpha-Titanium".RARE METAL MATERIALS AND ENGINEERING 46(2017):246-249.