Shear band deformation and fatigue striations during three-point bending fatigue crack growth in brittle metallic glass

doi:10.1016/j.jnoncrysol.2020.119988

CORC > 金属研究所 > 中国科学院金属研究所

	Shear band deformation and fatigue striations during three-point bending fatigue crack growth in brittle metallic glass
	Wang, X. D.1; Song, S. L.1; Liu, P.1; Zhu, Z. W.2; Zhang, H. F.2; Ren, X. C.1
刊名	JOURNAL OF NON-CRYSTALLINE SOLIDS
	2020-05-15
卷号	536 页码:6
关键词	Metallic glass Shear band Fatigue crack growth Fatigue fracture surface Fatigue striation
ISSN号	0022-3093
DOI	10.1016/j.jnoncrysol.2020.119988
通讯作者	Ren, X. C.(xcren@ustb.edu.cn)
英文摘要	Shear band plays a key role in fatigue damage and fracture behaviors in metallic glass (MG). The effect of the shear band on fatigue crack growth of a brittle Ti-32.8 Zr30.2Ni5.3Cu9Be22.7 (ZT3) MG with superior fatigue resistance was investigated by three-point bending fatigue testing in this work. The fatigue crack growth process is classified into three stages based on the shear band feature and crack profile. It is found that the crack path is straight and smooth with no or several shear bands near it in the former stage of fatigue crack growth, but transformed to be staircase-like with extensive shear-band proliferation in the latter stage. The transformation of crack growth path is mainly determined by three factors, i.e., the inclined shear band with respect to mode I crack plane direction, maximum energy release rate along the mode I crack plane direction and the asymmetric shear-band attribution on two sides of mode I crack plane direction. On the other hand, the fatigue fracture surface shows three regions with different fatigue striation features, which match well with three stages on the sample surface. The shear band theory including shear-band formation, propagation and cracking is utilized to well interpret the mechanism of fatigue striation formation. The present findings reveal the relation between shear band and fatigue crack growth and may provide instructions for future design of MGs with excellent fatigue resistance through controlling shear banding behavior.
资助项目	National Natural Science Foundation of China (NSFC)[11932020] ; Fundamental Research Funds for the Central Universities[FRF-TP-19-011A1]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000527028300003
资助机构	National Natural Science Foundation of China (NSFC) ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/138166]
专题	金属研究所_中国科学院金属研究所
通讯作者	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, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, X. D.,Song, S. L.,Liu, P.,et al. Shear band deformation and fatigue striations during three-point bending fatigue crack growth in brittle metallic glass[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2020,536:6.
APA	Wang, X. D.,Song, S. L.,Liu, P.,Zhu, Z. W.,Zhang, H. F.,&Ren, X. C..(2020).Shear band deformation and fatigue striations during three-point bending fatigue crack growth in brittle metallic glass.JOURNAL OF NON-CRYSTALLINE SOLIDS,536,6.
MLA	Wang, X. D.,et al."Shear band deformation and fatigue striations during three-point bending fatigue crack growth in brittle metallic glass".JOURNAL OF NON-CRYSTALLINE SOLIDS 536(2020):6.