中国激光, 2011, 38 (6): 0603026, 网络出版: 2011-05-20
激光微喷丸强化纯铜表面的纳米压痕分析
Research on Mechanical Response of Copper Treated by Micro Laser Shock Peening Using Nanoindentation Technique
激光技术 硬度 弹性模量 纳米压痕技术 表征 laser technique hardness elastic modulus nanoindentation technique characterization
摘要
采用纳米压痕技术对纯铜试样进行了力学性能测试,包括纳米硬度和弹性模量。结果表明,激光微喷丸强化区域的纳米硬度和弹性模量比未喷丸区域高,最高值分别是未喷丸区域的4.21倍和2.39倍。探讨了喷丸区域的纳米硬度和弹性模量的变化规律,分析了主要影响因素和强化机理。通过纳米压痕技术对材料表面力学性能的合理表征,为激光微喷丸强化过程中的工艺参数选择和表面质量的有效控制提供理论指导。
Abstract
Experimental research of nano-hardness and elastic modulus of copper treated by micro laser shock peening (μLSP) is carried out. The results show that nano-hardness and elastic modulus treated by μLSP are higher than those of substrate, with the maxima of 4.21 and 2.39 times, respectively. Change laws of nano-hardness and elastic modulus in shock region are explored, and main factors and strengthening mechanism are discussed. With reasonable characterization of surface mechanical performance by nanoindentation technique, good guidance on parameter optimal selection for further study of surface mechanical performance in μLSP is provided.
樊玉杰, 周建忠, 黄舒, 范金荣, 王呈栋, 王维, 卫登辉, 朱伟, 高彬. 激光微喷丸强化纯铜表面的纳米压痕分析[J]. 中国激光, 2011, 38(6): 0603026. Fan Yujie, Zhou Jianzhong, Huang Shu, Fan Jinrong, Wang Chengdong, Wang Wei, Wei Denghui, Zhu Wei, Gao Bin. Research on Mechanical Response of Copper Treated by Micro Laser Shock Peening Using Nanoindentation Technique[J]. Chinese Journal of Lasers, 2011, 38(6): 0603026.