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

doi:10.1016/j.jnoncrysol.2021.121263

IMR OpenIR

	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
通讯作者	Wang, X. D.(wangxiaodi@ustb.edu.cn) ; Ren, X. C.(xcren@ustb.edu.cn)
	2022-02-01
发表期刊	JOURNAL OF NON-CRYSTALLINE SOLIDS
ISSN	0022-3093
卷号	577 页码:10
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.
关键词	Metallic glass Cyclic loading Free volume Shear band Rejuvenation
资助者	China Postdoctoral Science Foundation ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC)
DOI	10.1016/j.jnoncrysol.2021.121263
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Ceramics ; Materials Science, Multidisciplinary
WOS记录号	WOS:000754665000007
出版者	ELSEVIER
引用统计	被引频次：4[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/321006/173412
专题	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.