激光冲击处理在核工业焊接结构上的应用  

Application of Laser Peening on Weld Structure Nuclear Industry

作　　者：宋巍[1] 邹世坤[1] 曹子文[1] 

机构地区：[1]中航工业北京航空制造工程研究所

出　　处：《航空制造技术》2014年第14期89-91,94,共4页Aeronautical Manufacturing Technology

摘　　要：概述了国外激光冲击处理技术在核工业焊接材料结构上的应用情况,并介绍了国内在核工业不锈钢等材料焊缝激光冲击处理上的一些研究。根据日本东芝公司无吸收层激光冲击强化处理反应堆压力容器的特点,展望了焊接区激光冲击处理在我国核电技术发展上的应用前景,指出我国在核电站建设中如何利用激光冲击处理技术延缓设备老化和应力腐蚀开裂的问题。As a novel surface strengthening technology, laser peening （laser shock processing） uses in- tense pulse laser to produce shock waves on metal surface, which induces strain hardening in the surface of metal. In this paper, the application of laser peening on weld structures is summarized, civil research works on laser peening weld zones are also introduced. According to the characteristics of laser peening without absorbing layer in TOSHIBA corporation, the future application of laser peening in nuclear plants in China is expected, some ideas of how to use laser peening prevent SCC and aging in nuclear equipments is presented.

关 键 词：激光冲击处理 表面强化 核工业 焊接区 抗应力腐蚀裂纹 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]