摘要
采用1 KW激光器、X-Y工作平台及光学电镜,研究45钢激光淬火工艺过程中的微观组织及性能的变化规律,确定淬火层的硬度指标及优化激光淬火方案。结果表明,当淬火工艺参数为P=143W,V=6mm/s,L=26.0mm,S=0.1 mm时,试验钢淬火后表面形成枝晶,其组织由隐针马氏体和少数残留奥氏体组成,为最优激光淬火方案。
The effect of Laser quenching conditions on the 45 steel microstructures and mechanical properties are studied using 1KW laser, X-Y working platform and optical microscope. Meanwhile, the hardness of the quenching layer on the steel surface and the best laser quenching conditions are also investigated. The results show that, the best laser quenching conditions of 45 steel are P=143 W,V=6 mrn/s ,L =26.0 mm,S=0.1 mm. After quenching, a dendrite microstructure is formed at steel surface, which consists of needle shaped martensite and a small amount of residual austenite.
出处
《铸造技术》
CAS
北大核心
2014年第10期2260-2263,共4页
Foundry Technology
关键词
激光淬火
正交试验
淬火层
laser quenching
the orthogonal experiment
quenching layer
