激光冲击强化金属材料微观组织变化的研究进展  

Research progress on microstructure changes of metallic materials by laser shock processing

作　　者：曹宇鹏[1] 蒋苏州 花国然[1] 周东呈 陈浩天[1] 

机构地区：[1]南通大学机械工程学院,江苏南通226019

出　　处：《金属热处理》2017年第10期125-131,共7页Heat Treatment of Metals

基　　金：国家自然科学基金(51505236);江苏省科技成果转化项目(BA2013099);南通市应用基础研究项目(GY12016001)

摘　　要：激光冲击强化是利用强激光诱导等离子体冲击波的力学效应来改善金属表面机械综合性能的一种新型表面强化技术。阐述了激光冲击强化对材料微观组织结构变化的最新研究动态,重点论述了X射线衍射、扫描电镜、透射电镜在微观组织结构变化研究上的应用与发展,在此基础上进一步指出激光冲击强化对材料表面微观组织结构变化和宏观力学性能的多尺度表征是当前研究的新热点。Laser shock processing（ LSP） is a new surface strengthening technology to improve the mechanical properties of the metal surface by using the mechanical effect of the laser induced plasma shock wave. The latest research status of microstructure changes of materials by using LSP technology was reviewed. The application and development of X-ray diffraction（ XRD）,scanning electron microscopy（ SEM） and transmission electron microscopy（ TEM） of microstructural changes were mainly discussed. Based on these,it was pointed out that surface multi-scale characterization of microstructure changes and macro-mechanical properties on the surface of materials was the new hotspot in the field of LSP.

关 键 词：激光冲击强化 微观组织 X射线衍射 

分 类 号：TN249[电子电信—物理电子学]