Structural evolution under elastic cyclic loading in a Ti-based metallic glass

doi:10.1016/j.jnoncrysol.2021.121263

CORC > 金属研究所 > 中国科学院金属研究所

	Structural evolution under elastic cyclic loading in a Ti-based metallic glass
	Wang, X. D.1; Song, S. L.1; Zhu, Z. W.2; Zhang, H. F.2; Ren, X. C.1
刊名	JOURNAL OF NON-CRYSTALLINE SOLIDS
	2022-02-01
卷号	577 页码:10
关键词	Metallic glass Cyclic loading Free volume Shear band Rejuvenation
ISSN号	0022-3093
DOI	10.1016/j.jnoncrysol.2021.121263
通讯作者	Wang, X. D.(wangxiaodi@ustb.edu.cn) ; Ren, X. C.(xcren@ustb.edu.cn)
英文摘要	Multiple characterization techniques including DSC, TEM, XRD, HV and SEM were utilized to investigate the structural evolution of metallic glass (MG) under elastic cyclic loading. It is found that the relaxation enthalpy (served as the reflection of free volume contents) in the fatigued specimen was raised by similar to 5 times as compared with as-cast specimen. The cyclic loading induces the larger interatomic distance and smaller coordination number. Besides, the micmhardness reduction from similar to 545.6 +/- 15.3 to similar to 518.7 +/- 4.8 was observed in the as-cast and fatigued specimens, indicating the cyclic loading induced softening behavior. Such results reveal that the elastic cyclic loading can cause the irreversible structural change with the increase of free volume. Then the key problem of shear band formation under cyclic stress level lower than yield strength was clarified by the free volume theory.
资助项目	China Postdoctoral Science Foundation[2019M660455] ; Fundamental Research Funds for the Central Universities[FRF-TP-19-011A1] ; National Natural Science Foundation of China (NSFC)[52101065]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000754665000007
资助机构	China Postdoctoral Science Foundation ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC)
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173411]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, X. D.; Ren, X. C.
作者单位	1.Univ Sci & Technol Beijing, Natl Ctr Mat Serv Safety, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, X. D.,Song, S. L.,Zhu, Z. W.,et al. Structural evolution under elastic cyclic loading in a Ti-based metallic glass[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2022,577:10.
APA	Wang, X. D.,Song, S. L.,Zhu, Z. W.,Zhang, H. F.,&Ren, X. C..(2022).Structural evolution under elastic cyclic loading in a Ti-based metallic glass.JOURNAL OF NON-CRYSTALLINE SOLIDS,577,10.
MLA	Wang, X. D.,et al."Structural evolution under elastic cyclic loading in a Ti-based metallic glass".JOURNAL OF NON-CRYSTALLINE SOLIDS 577(2022):10.