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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
Source PublicationDYMAT 2009: 9TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING, VOL 2
2009
Pages993-998
Conference Name9th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
Conference DateSEP 07-11, 2009
Conference PlaceBrussels, BELGIUM
AbstractIn 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.
KeywordSerrated Plastic-flow Amorphous-alloys Inhomogeneous Deformation Nanoindentation Instability Dynamics Fracture
ISBN978-2-7598-0473-3
URL查看原文
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44346
Collection非线性力学国家重点实验室
Corresponding AuthorDai LH
Recommended Citation
GB/T 7714
Jiang MQ,Dai LH,Dai LH. Strain rate-dependent shear band behavior in bulk metallic glasses[C]DYMAT 2009: 9TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING, VOL 2,2009:993-998.
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