Deformation feature and properties of Zr based bulk metallic glass treated by laser shock peening
Deformation feature and properties of Zr based bulk metallic glass treated by laser shock peening
复制标题
DOI：
10.1179/1432891714z.000000000783
复制
发表时间：
2014-07
影响因子：
--
通讯作者：
G. Xu;Y. Wei;B. Wei
中科院分区：
文献类型：
--
作者：
G. Xu;Y. Wei;B. Wei
摘要激光冲击强化是一种很有前途的表面处理技术，可以通过引入深压残余应力区域来提高金属材料的机械性能。本文采用激光冲击强化技术对Zr基大块非晶合金进行了强化处理。与非晶合金的加工软化相反，激光冲击强化非晶合金在塑性变形区表现出明显的硬化。此外，塑性变形区具有独特的变形特征，这取决于样品的厚度。研究了冲击区下的变形形态。讨论了硬化和形成独特变形特征的机制。
Abstract Laser shock peening is promising surface treatment technique to improve the mechanical properties of metals material through introducing a deep compressive residual stresses region. In this work, LSP was employed to treat Zr based bulk metallic glasses (BMGs). In contrast to the work softening in BMGs, laser shock peened BMG shows significant hardening in the plastic deformed region. Furthermore, the plastic deformation region exhibits unique deformation features, which is dependent on the thickness of the samples. The deformation morphology under the impacted region was also studied. The mechanism for the hardening and formation of unique deformation features is discussed.