Plastic deformability of metallic glass by artificial macroscopic notches
文献类型：期刊论文
| 作者 | J. X. Zhao ; F. F. Wu ; R. T. Qu ; S. X. Li ; Z. F. Zhang |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2010 |
| 卷号 | 58期号:16页码:5420-5432 |
| 关键词 | Metallic glass Shear band Plastic deformation Notch Stress gradient bulk amorphous-alloys fracture-behavior mechanical-properties stress-concentration enhanced plasticity supercooled liquid shear deformation flow microstructure pressure |
| ISSN号 | 1359-6454 |
| 中文摘要 | This paper reports that the plasticity of Zr-based metallic glass can be improved by creating two symmetrical semi-circular notches. Unlike the experimental findings of the samples without notches, a steady shear deformation can be created by the large-scale stress gradient around the two symmetrical notches and the plasticity of metallic glass can be enhanced to a high value of similar to 10% under compression tests. The improved plasticity may be due to the easy initiation of shear bands around the notches, and the consequent blocking effect of notches on the propagation of shear bands, similar to the dislocation mechanism in crystalline materials. To reveal the particular plastic deformation behavior of metallic glass, Ti(3)SiC(2) ceramic and high-strength steel specimens with two symmetrical semi-circular notches were also conducted under compressive loadings; however, no enhancement in plasticity was found. It is suggested that creating a stress gradient is a particular strategy for designing metallic glasses in order to improve their plasticity. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31742]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | J. X. Zhao,F. F. Wu,R. T. Qu,et al. Plastic deformability of metallic glass by artificial macroscopic notches[J]. Acta Materialia,2010,58(16):5420-5432. |
| APA | J. X. Zhao,F. F. Wu,R. T. Qu,S. X. Li,&Z. F. Zhang.(2010).Plastic deformability of metallic glass by artificial macroscopic notches.Acta Materialia,58(16),5420-5432. |
| MLA | J. X. Zhao,et al."Plastic deformability of metallic glass by artificial macroscopic notches".Acta Materialia 58.16(2010):5420-5432. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。