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Ductile-to-brittle transition in spallation of metallic glasses
Huang X; Ling Z; Dai LH(戴兰宏); Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Source PublicationJOURNAL OF APPLIED PHYSICS
2014-10-14
Volume116Issue:14Pages:143503
ISSN0021-8979
AbstractIn this paper, the spallation behavior of a binary metallic glass Cu50Zr50 is investigated with molecular dynamics simulations. With increasing the impact velocity, micro-voids induced by tensile pulses become smaller and more concentrated. The phenomenon suggests a ductile-to-brittle transition during the spallation process. Further investigation indicates that the transition is controlled by the interaction between void nucleation and growth, which can be regarded as a competition between tension transformation zones (TTZs) and shear transformation zones (STZs) at atomic scale. As impact velocities become higher, the stress amplitude and temperature rise in the spall region increase and micro-structures of the material become more unstable. Therefore, TTZs are prone to activation in metallic glasses, leading to a brittle behavior during the spallation process. (C) 2014 AIP Publishing LLC.
Subject AreaPhysics
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000343988000010
Funding OrganizationFinancial support was from the National Key Basic Research Program of China (2012CB937500), the NSFC (Grants Nos.: 11272328, 11472287, and 11402245), and the CAS/SAFEA International Partnership Program for Creative Research Teams.
DepartmentLNM冲击动力学与新型材料力学性能
Classification二类/Q2
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49391
Collection非线性力学国家重点实验室
Corresponding AuthorDai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Huang X,Ling Z,Dai LH,et al. Ductile-to-brittle transition in spallation of metallic glasses[J]. JOURNAL OF APPLIED PHYSICS,2014,116(14):143503.
APA Huang X,Ling Z,戴兰宏,&Dai, LH .(2014).Ductile-to-brittle transition in spallation of metallic glasses.JOURNAL OF APPLIED PHYSICS,116(14),143503.
MLA Huang X,et al."Ductile-to-brittle transition in spallation of metallic glasses".JOURNAL OF APPLIED PHYSICS 116.14(2014):143503.
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