板材脉冲激光微冲击成形技术及研究现状  

Microscale laser peen forming of sheet metal and its research situation

作　　者：郑超[1] 孙胜[1] 季忠[1] 王巍[1] 

机构地区：[1]山东大学材料科学与工程学院,济南250061

出　　处：《塑性工程学报》2009年第4期59-67,共9页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(50775131);山东省自然科学基金资助项目(Y2007F55);教育部留学回国人员科研启动基金

摘　　要：激光微冲击成形是利用脉冲激光作用于材料时引起的等离体爆轰波的冲击作用,使超薄板材产生塑性变形的新技术,可以用于微弯曲、微拉深、微胀形等。文章介绍了脉冲激光微冲击成形技术的原理和特点,概括了激光微冲击成形的影响因素和有限元模拟关键技术,从激光诱导冲击波、板材变形机制、冲击后材料力学性能和微观组织变化等方面,综述了激光微冲击成形技术的研究进展,并对其发展趋势进行展望。Microscale laser peen forming （μLPF） is a novel technology which uses the shock wave induced during laser-target interaction to generate plastic deformation of ultra thin sheet metal, and it can be applied to micro-bending, micro-bulging and micro deep drawing etc.. The fundamental principle and characteristics of μLPF were briefly introduced. Then the influence factors and key technologies of FEM of μLPF were summarized. After that, a comprehensive review of/zLPF was dissertated, including laser shock wave, deformation mechanisms of sheet metal, changes of mechanic properties and microstructure of materials. Finally, expectations of farther researches on μLPF were brought forward.

关 键 词：激光冲击成形 超薄板材 微成形 塑性成形 

分 类 号：TN249[电子电信—物理电子学] TG30[金属学及工艺—金属压力加工]