激光参数对Ti6Al4V钛合金激光冲击成形的影响  

Influence of laser parameters on laser-shock forming of Ti-6Al-4V alloy

作　　者：任旭东[1] 张永康[1] 周建忠[1] 张兴权[1] 鲁金忠[1] 

机构地区：[1]江苏大学机械工程学院光子制造科学与技术省重点实验室,镇江212013

出　　处：《中国有色金属学报》2006年第11期1850-1854,共5页The Chinese Journal of Nonferrous Metals

基　　金：国家高技术研究发展计划资助项目(2002AA336030);国防航空基金资助项目(02H52053)

摘　　要：研究在Ti6Al4V合金激光冲击成形过程中,不同激光参数对板料弯曲角及表层硬度的影响。结果表明:当激光功率密度小于3GW/cm2时,弯曲角随着激光功率密度线性增加,激光功率密度超过3GW/cm2时,由于表面熔化现象的出现,弯曲角出现减小的趋势;板料弯曲角随冲击次数的增加也呈线性增长,但弯曲阻力的增加使得弯曲角的增长速度逐渐减慢;随着激光功率密度的增加,材料表面冲击区的硬度增高,表面硬化层的显微硬度最高达HV490,硬化层厚度约为1.0mm。Laser shock processing technology was employed on Ti6Al4V and the influence of laser parameters on laser-shock forming of Ti-6Al-4V alloy was investigated. The results show that the bending angle is in proportion to the laser energy density and the number of laser shocking when the laser energy density is less than 3 GW/cm^2 , when the energy density is larger than 3 GW/cm^2 , the shocked surface of Ti-6Al-4V alloy will result in melting and a uniform hardened layer with almost 1.0 mm in thickness and HV490 in hardness is obtained on the surface of Ti6Al4V alloy when the technologic parameters are selected properly in laser shock processing.

关 键 词：TI6AL4V钛合金 激光冲击成形 工艺参数 

分 类 号：TN249[电子电信—物理电子学] TG156[金属学及工艺—热处理]