| 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 Publication | JOURNAL OF APPLIED PHYSICS
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| 2014-10-14 | |
| Volume | 116Issue:14Pages:143503 |
| ISSN | 0021-8979 |
| Abstract | In 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 Area | Physics |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000343988000010 |
| Funding Organization | Financial 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. |
| Department | LNM冲击动力学与新型材料力学性能 |
| Classification | 二类/Q2 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/49390 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Dai, 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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