Evolution of residual stress, free volume, and hardness in the laser shock peened Ti-based metallic glass

doi:10.1016/j.matdes.2016.09.017

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	Evolution of residual stress, free volume, and hardness in the laser shock peened Ti-based metallic glass
	Wang, Liang 1; Wang, Lu 1; Nie, Zhihua 1; Ren, Yang 2; Xue, Yunfei 1; Zhu, Ronghua 3; Zhang, Haifeng 4; Fu, Huameng 4
刊名	MATERIALS & DESIGN
	2016-12-05
卷号	111 页码:473-481
关键词	Bulk metallic glasses Laser shock peening High energy X-ray diffraction Residual stress Free volume Hardness
ISSN号	0264-1275
DOI	10.1016/j.matdes.2016.09.017
通讯作者	Xue, Yunfei(xueyunfei@bit.edu.cn)
英文摘要	Laser shock peening (LSP) with different cycles was performed on the Ti-based bulk metallic glasses (BMGs). The sub-surface residual stress of the LSPed specimens was measured by high-energy X-ray diffraction (HEXRD) and the near-surface residual stress was measured by scanning electron microscope/focused ion beam (SEM/FIB) instrument. The sub-surface residual stress in the LSP impact direction (about-170MPa) is much lower than that perpendicular to the impact direction (about -350 MPa), exhibiting anisotropy. The depth of the compressive stress zone increases from 400 mu m to 500 mu m with increasing LSP cycles. The highest near-surface residual stress is about -750 MPa. LSP caused the free volume to increase and the maximum increase appeared after the first LSP process. Compared with the hardness (567 +/- 7 HV) of the as-cast BMG, the hardness (590 +/- 9 HV) on the shocked surface shows a hardening effect due to the hardening mechanism of compressive residual stress; and the hardness (420 +/- 9 HV) on the longitudinal section shows a softening effect due to the softening mechanism of free volume. (C) 2016 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[51471035] ; Beijing Higher Education Young Elite Teacher Project ; Program of One Hundred Talented People of the Chinese Academy of Sciences ; U.S. Department of Energy, Office of Science, Office of Basic Energy Science[DE-AC02-06CH11357]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000386869300056
资助机构	National Natural Science Foundation of China ; Beijing Higher Education Young Elite Teacher Project ; Program of One Hundred Talented People of the Chinese Academy of Sciences ; U.S. Department of Energy, Office of Science, Office of Basic Energy Science
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/123283]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xue, Yunfei
作者单位	1.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China 2.Argonne Natl Lab, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA 3.Tsinghua Univ, Sch Aerosp, AML, Beijing 100084, Peoples R China 4.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Liang,Wang, Lu,Nie, Zhihua,et al. Evolution of residual stress, free volume, and hardness in the laser shock peened Ti-based metallic glass[J]. MATERIALS & DESIGN,2016,111:473-481.
APA	Wang, Liang.,Wang, Lu.,Nie, Zhihua.,Ren, Yang.,Xue, Yunfei.,...&Fu, Huameng.(2016).Evolution of residual stress, free volume, and hardness in the laser shock peened Ti-based metallic glass.MATERIALS & DESIGN,111,473-481.
MLA	Wang, Liang,et al."Evolution of residual stress, free volume, and hardness in the laser shock peened Ti-based metallic glass".MATERIALS & DESIGN 111(2016):473-481.