Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory

doi:10.1016/j.jnoncrysol.2019.119861

IMR OpenIR

	Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory
	Zhao, J. X.1,3; Zhang, Z. F.2; Chen, Y. F.1,3; Gong, J. M.1,3
通讯作者	Zhao, J. X.(jxzhaoimr@njtech.edu.cn)
	2020-03-01
发表期刊	JOURNAL OF NON-CRYSTALLINE SOLIDS
ISSN	0022-3093
卷号	531 页码:8
摘要	The shear band evolution process induced by different aspect ratios was investigated by experiments and hydrostatic-stress embedded free-volume theory. It was found that specimen with lower aspect ratio displayed a higher compressive plasticity since the shear band propagation was confined by the machine head in a way of preventing the sample from fracturing along one major shear band. Hydrostatic-stress embedded free-volume theory was incorporated into ABAQUS as a user material subroutine UMAT. Numerical method was performed to reveal the shear band evolution caused by different aspect ratios. There was a good agreement between experiments and simulations. Furthermore, simulations demonstrated that sample with smaller aspect ratios yielded a relatively lower strain localization level, leading to a correspondingly stable plastic deformation process. Compared with the viscoelastic model, it showed that the current model could better describe shear band evolution history.
关键词	Metallic glass Shear band Aspect ratio Plasticity Hydrostatic-stress embedded free-volume theory
资助者	Nanjing Tech University
DOI	10.1016/j.jnoncrysol.2019.119861
收录类别	SCI
语种	英语
资助项目	Nanjing Tech University[3827400243]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics ; Materials Science, Multidisciplinary
WOS记录号	WOS:000527022700015
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/138553
专题	中国科学院金属研究所
通讯作者	Zhao, J. X.
作者单位	1.Nanjing Tech Univ, Sch Mech & Power Engn, 30 Puzhu Rd, Nanjing 211816, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Lab, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Jiangsu Key Lab Design & Manufacture Extreme Pres, Nanjing 210000, Peoples R China
推荐引用方式 GB/T 7714	Zhao, J. X.,Zhang, Z. F.,Chen, Y. F.,et al. Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2020,531:8.
APA	Zhao, J. X.,Zhang, Z. F.,Chen, Y. F.,&Gong, J. M..(2020).Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory.JOURNAL OF NON-CRYSTALLINE SOLIDS,531,8.
MLA	Zhao, J. X.,et al."Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory".JOURNAL OF NON-CRYSTALLINE SOLIDS 531(2020):8.