| 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.
|
| 发表期刊 | JOURNAL OF APPLIED PHYSICS
 |
| 2014-10-14
|
| 卷号 | 116期号:14页码:143503 |
| ISSN | 0021-8979
|
| 摘要 | 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. |
| 学科领域 | Physics
|
| URL | 查看原文
|
| 收录类别 | SCI
; EI
|
| 语种 | 英语
|
| WOS记录号 | WOS:000343988000010
|
| 项目资助者 | 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.
|
| 课题组名称 | LNM冲击动力学与新型材料力学性能
|
| 论文分区 | 二类/Q2
|
| 引用统计 |
|
| 文献类型 | 期刊论文
|
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/49390
|
| 专题 | 非线性力学国家重点实验室
|
| 通讯作者 | Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
推荐引用方式
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.
|
修改评论