摘要
利用双层辉光离子渗金属技术在工业纯铁表面形成高钴的Fe Co W Mo型表面时效硬化合金。研究表明 ,这种表面合金具有时效硬化迅速、硬化能力强和抗回火软化能力强的特点。合金经 1 2 4 0℃固溶处理后于 540℃时效 5min ,硬度就从固溶态的 50 0HV0 .2 左右上升到 750HV0 .2 ;时效 40min ,硬度上升到 1 2 0 0HV0 .2 左右 ;于70 0℃回火 2h ,表层硬度仍保持 72 0HV0 .2 以上。
A surface age hardening alloy of Fe Co W Mo was formed on the surface of ingot iron by the double glow plasma surface alloying technique (DGPSA). The experimental results showed that the surface age hardening alloy possesses a very high rate of age hardening, a very strong ability of age hardening and a very strong ability against temper softening. The hardness of the surface age hardening alloy is increased from 500 HV 0.2 to 750 HV 0.2 after solution treatment followed by ageing for 5 min at 540 ℃, increased to 1 200 HV 0.2 after ageing for 40 min in case of holding on the other heat treatment states above. And also the hardness of the surface age hardening alloy exceeds 720 HV 0.2 after tempering for 2 h at 700 ℃.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2000年第1期51-54,共4页
The Chinese Journal of Nonferrous Metals
关键词
双辉技术
表面合金
时效硬化
离子渗金属
double glow plasma surface alloying
surface ageing alloy
age hardening
