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First-principles Investigations of Atom Migration in alpha-Titanium
Zhang Lianji1,2; Hu Qingmiao1; Yang Rui1
Corresponding AuthorZhang Lianji(ljzhang12s@imr.ac.cn)
2017-06-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume46Pages:246-249
AbstractTitanium 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.
Keywordfirst-principles diffusion creep
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000406570100050
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/124782
Collection中国科学院金属研究所
Corresponding AuthorZhang Lianji
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
Recommended Citation
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.
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