摘要
研究了钢结硬质合金ＧＪＷ５０（配料成分ｗｔ％：５０ＷＣ、０．２５Ｃ、０．５０Ｃｒ、０．２５Ｍｏ、余为Ｆｅ）经１０２０℃奥氏体化、２０００℃（低于Ｍｓ点）等温淬火后的组织与机械性能．结果表明，该状态基体组织中残余奥氏体量明显多于１０２０℃淬火＋２００℃回火态，其硬度、抗弯强度与冲击韧性均高于后者，但断裂韧性略低于后者．
The structure and mechanical properties of the steel bonded hard alloy GJW50 (content of wt%:50WC, 0. 25℃, 0. 50Cr, 0. 25Mo, other Fe) quenched by isothermal at 200℃ has been sTudied. It was chain that the content of remain austenite of this state is obviously more than that of the state quenched from 1020℃ and tempered at 200℃. And HRC, σbb and ak of the isothermal state are higher than that of the latter. But K1c is lightly lower than the latter.
出处
《热加工工艺》
CSCD
北大核心
1996年第6期29-31,共3页
Hot Working Technology
关键词
硬质合金
钢结硬质合金
马氏体
等温淬火
steel bonded hard alloy
isothermal hardening of martensite
mechanical property
