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Stress corrosion cracking of the titanium alloys under hydrostatic pressure resulting from the degradation of passive films

文献类型：期刊论文

作者Liu, Rui1,2,3; Xie, Yushi3; Jin, Yue3; Cui, Yu1; Liu, Li3; Wang, Fuhui3
刊名ACTA MATERIALIA
出版日期2023-06-15
卷号252页码:10
关键词Stress-corrosion cracking Electrochemical characterization Deep sea Titanium alloys
ISSN号1359-6454
DOI10.1016/j.actamat.2023.118946
通讯作者Liu, Li(liuli@mail.neu.edu.cn)
英文摘要Stress corrosion cracking of Ti-6Al-4 V under hydrostatic pressure was studied based on experimental characterization and first-principles calculation. As a consequence of the water pressure, the passive films equipped with tensile stress become unstable, which might result from the dissolution of vanadium. The work function confirms that vanadium is environmentally sensitive and becomes surprisingly active under hydrostatic pressure. This selective dissolution provides an acid circumstance, although in the neutral 3.5% NaCl solution. Meanwhile, hydrostatic pressure also affects the adsorption and penetration of hydrogen, thus promoting the stress corrosion of titanium alloy. With the pressure, hydrogen ingresses into titanium and then incubates cracks by accelerating dislocation motion. Our efforts provided a basis for designing titanium alloys with higher tolerance to pressure changes, by selecting a class of alloying elements with little change in chemical stability even in extreme environments.
资助项目Nation Key R & D Program of China[2022YFB3808800] ; China Postdoctoral Science Foundation[2021M700711] ; National Natural Science Foundation of China[U20b2026] ; A-class pilot of the Chinese Academy of Sciences[XDA22010303]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000982272000001
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Nation Key R & D Program of China ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; A-class pilot of the Chinese Academy of Sciences
源URL[http://ir.imr.ac.cn/handle/321006/177737]  
专题金属研究所_中国科学院金属研究所
通讯作者Liu, Li
作者单位1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Wencui Rd 62, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Wenhua Rd 72, Shenyang 110016, Peoples R China
3.Northeastern Univ, Shenyang Natl Lab Mat Sci, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Rui,Xie, Yushi,Jin, Yue,et al. Stress corrosion cracking of the titanium alloys under hydrostatic pressure resulting from the degradation of passive films[J]. ACTA MATERIALIA,2023,252:10.
APA Liu, Rui,Xie, Yushi,Jin, Yue,Cui, Yu,Liu, Li,&Wang, Fuhui.(2023).Stress corrosion cracking of the titanium alloys under hydrostatic pressure resulting from the degradation of passive films.ACTA MATERIALIA,252,10.
MLA Liu, Rui,et al."Stress corrosion cracking of the titanium alloys under hydrostatic pressure resulting from the degradation of passive films".ACTA MATERIALIA 252(2023):10.

入库方式： OAI收割

来源：金属研究所

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