摘要
采用冲击碰撞载荷 ,对奥氏体不锈钢表面激光熔覆镍基合金涂层进行冲击试验 ,涂层与基体都产生了微塑性变形 ,反复作用可产生累积宏观塑性变形 ,从涂层到基体都出现了均匀的形变硬化现象。在涂层覆盖区边缘下部会出现强烈的形变硬化与材料流动现象 ,同时此处容易产生裂纹并扩展。
Austenitic stainless steel treated with laser clad Ni-based alloy is tested under impact load.There is micro plastic deformation in the base and clad coating.Macro plastic deformation is formed after repeated process,and homogeneous hardening comes into being from clad to base.There is intensive deformation hardening and material-flowing phenomena along the brink of clad coating, on which cracks tend to grow and spread.
出处
《激光技术》
CAS
CSCD
北大核心
2004年第3期259-261,共3页
Laser Technology
关键词
激光熔覆涂层
脉动冲击
表面力学性能
显微组织
laser cladding
fluctuating shock
surface mechanical properties
microstructure
