摘要
对多晶冷轧钼带进行激光冲击成形及其强化,分析了冲击试件的显微硬度和微观组织。结果表明:高应变速率激光冲击实现了脆性多晶冷轧钼带冷成形和改性双重效应;半搭接区域激光冲击强化的多晶钼带表面显微硬度符合高斯函数变化规律,具有更好的冲击强化效果,其显微硬度峰值变化范围为HV265-310;激光冲击强化可提高钼带耐高温性能。
The cold-rolled polycrystalline molybdenum strip was laser shocked by the Thales laser with the maximum output laser pulse energy of 12.5 J, and the microhardness and microstructure of shocked specimens were analyzed. The results show that laser shock at high strain rate can achieve a double effect of forming and modification of brittle polycrystalline cold-rolled molybdenum strip. The microhardness on the surface of the polycrystalline molybdenum strip in the half-lap region of laser shock processing accorded with variation of the Gaussian function, and the peak range was HV265-310. The thermostability of laser shocked molybdenum strip was improved.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2012年第5期545-550,共6页
Chinese Journal of Materials Research
基金
国家自然科学基金51175231资助项目~~
关键词
金属材料
钼带
激光冲击强化
冷成形
metallic materials, molybdenum strip, laser shock peening, cold forming
