Strain rate-dependent shear band behavior in bulk metallic glasses

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	Strain rate-dependent shear band behavior in bulk metallic glasses
	Jiang MQ(蒋敏强); Dai LH(戴兰宏); Dai LH; Dai LH
	2009
会议名称	9th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
会议日期	SEP 07-11, 2009
通讯作者邮箱	lhdai@lnm.imech.ac.cn
会议地点	Brussels, BELGIUM
关键词	Serrated Plastic-Flow Amorphous-Alloys Inhomogeneous Deformation Nanoindentation Instability Dynamics Fracture
页码	993-998
通讯作者	Dai LH
中文摘要	In this article, we review our recent advances in understanding the deformation behavior of a typical tough Zr41.2Ti13.8Cu12.5Ni10Be22.5 (Vit 1) bulk metallic glass (BMG), as a model material, under various loading modes and strain rates, focusing particularly on the rate-dependence and formation mechanism of shear-banding. Dynamic and quasi-static mechanical experiments, including plate shear, shear punch and spherical indentation, and continuum as well as atomistic modeling on shear-banding are discussed. The results demonstrate that higher strain rate slows down the annihilation process of free volume, but promotes the free-volume coalescence, which is responsible for the rate-dependent shear banding. The physical origin of shear bands, that is the free volume softening underpinned by irreversible rearrangements of atoms, is unveiled. Finally, some concluding remarks are given.
会议网址	http://dx.doi.org/10.1051/dymat/2009139
会议录	DYMAT 2009: 9TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING, VOL 2
语种	英语
ISBN号	978-2-7598-0473-3
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/44346]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Dai LH; Dai LH
推荐引用方式 GB/T 7714	Jiang MQ,Dai LH,Dai LH,et al. Strain rate-dependent shear band behavior in bulk metallic glasses[C]. 见:9th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading. Brussels, BELGIUM. SEP 07-11, 2009.http://dx.doi.org/10.1051/dymat/2009139.