强激光冲击锻铝薄板的实验  

Experimental study on metal sheet of LD31 aluminum alloy shocked by intense laser

作　　者：张兴权[1] 张永康[1] 顾用玉 任旭东[1] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013

出　　处：《华中科技大学学报（自然科学版）》2007年第S1期139-142,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50475127;50675089;50675090);江苏省自然科学基金资助项目(BK2005054)

摘　　要：进行了锻铝合金(LD31)薄板试样在短脉冲强激光冲击下的实验研究.结果表明:在强激光冲击下,试样发生显著的塑性变形,变形后轴截面形状为类圆锥形;试样塑性变形量随激光能量的增加而增加,随着试样的厚度增加而减小;在其他工艺参数相同的情况下,圆形试样比正方形试样更容易发生塑性变形;试样冲击变形区正反二面表面粗糙度值下降,表面光洁度得到明显提高;试样冲击区的硬度没有得到显著提高,这和冲击强化有着很大不同;当激光能量的增加或者试样厚度减薄到一定程度时,试样将发生层裂,从其断口的形貌来看,其断裂方式属于韧性断裂.The experimental results of metal sheet of 6063 aluminum alloy loaded by shock waves induced by high-power short-duration pulse laser were proposed in this paper.The specimen irradiated by intense laser generates distinct plastic deformation,and the profile of axial cross section of specimen after shocking is similar to a coniform figure.The plastic deformation of specimen grows with the increasing energy of laser and decreases with the enhancing thickness of the specimen.Under the same conditions,the circu...

关 键 词：激光冲击 塑性变形 硬度 粗糙度 层裂 

分 类 号：TN249[电子电信—物理电子学]