激光冲击诱发相变的实验研究  

Experimental research of laser shock processing inducingphase transformation

作　　者：杨晓[1] 邹鸿承[1] 戴蜀娟[1] 韩誉 

机构地区：[1]华中理工大学激光技术国家重点实验室 [2]成都飞机工业公司

出　　处：《激光杂志》1998年第3期41-43,共3页Laser Journal

摘　　要：本文对激光冲击是否可以诱发相变进行了试验研究。用功率密度为１０６×１０８Ｗ／ｃｍ２的激光器冲击Ｔ８钢表面。实验结果表明激光冲击处理使Ｔ８钢的表面显微硬度有所提高并可以发生马氏体相变。冲击处理后材料表面硬度提高了两倍，认为相变是Ｔ８钢表面硬度提高的原因之一。The possibility of phase transformation induced by laser shocking has been discussed in this paper.Laser with power density 1.06×108W/cm2was used to shock the surface of T8 steel.According to the experimental results,phase transformation induced by Laser Shock Processing (LSP) in T8 steel was found.Surfacial hardness has improved about 2 times.Phase transformation is believed to be one of the reasons of improvement of surfacial hardness of T8 steel.

关 键 词：激光冲击处理 相变 表面硬度 T8钢 

分 类 号：TG115.56[金属学及工艺—物理冶金] TN24[金属学及工艺—金属学]