Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume

doi:10.1016/j.jallcom.2020.158432

IMR OpenIR

	Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume
	Wang, X. D.1; Song, S. L.1; Zhu, Z. W.2; Zhang, H. F.2; Ren, X. C.1
通讯作者	Ren, X. C.(xcren@ustb.edu.cn)
	2021-04-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	861 页码:10
摘要	The large scatter of fatigue property severely hinders the application of metallic glasses (MGs). The sampling location may be one important reason for the fatigue scatter, however the related studies are few. Here we confirmed that, the fatigue property and mechanism of a Ti-based MG were influenced by the sampling location from casting MG plate. The differential scanning calorimetry (DSC) result indicates that the free volume contents decrease from outside to inside along the thickness direction of casting plate, which is probably due to varying cooling rates in this direction during solidification. It is found that the shear-band features after fatigue fracture depend on the sampling location, that is, for the specimens containing smaller near-surface volume, the small amount of the initial free volume contents and increased free volume contents induced by cyclic loading suppress the formation of shear band. The fatigue endurance limit, fatigue ratio and fatigue life of the specimens containing smaller near-surface volume are obviously higher. The superior fatigue property can be well explained by the shear band-mediated fatigue cracking mechanism. These results enhance the understanding on the relation between the free volume, shear band and fatigue property under cyclic loading and provide the instruction how to regulate the fatigue resistance of MG by controlling where the specimens are cut from casting MG plates based on the microstructural state. (C) 2020 Published by Elsevier B.V.
关键词	Metallic glass Shear band Sampling location Free volume Fatigue endurance limit Fatigue crack
资助者	China Postdoctoral Science Foundation ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.jallcom.2020.158432
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]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000619199300070
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：5[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/321006/160842
专题	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.,Zhu, Z. W.,et al. Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,861:10.
APA	Wang, X. D.,Song, S. L.,Zhu, Z. W.,Zhang, H. F.,&Ren, X. C..(2021).Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume.JOURNAL OF ALLOYS AND COMPOUNDS,861,10.
MLA	Wang, X. D.,et al."Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume".JOURNAL OF ALLOYS AND COMPOUNDS 861(2021):10.