摘要
采用金相检验、显微硬度测定、扫描电镜等手段,对镗轴氮化、磨削后表面出现凹坑的原因进行分析。结果表明,显微组织中的针状、脉状和网状氮化物以及粗大的回火索氏体的出现,使磨削应力增大,最终导致氮化层中硬脆相剥落而形成了凹坑。
The reason of the pit on the surface of boring axis nitrated and grinded was analyzed by metallographic examination, micro-hardness testing and SEM. The results show that needle-like, mountain-like,netted nitrate and the coarse tempered sorbite of microstructure appear, which makes the grinding stress increase, and causes stripping of the stiff phase in the nitrating layer.
出处
《热加工工艺》
CSCD
北大核心
2009年第2期126-127,共2页
Hot Working Technology
