热处理对高钒高速钢中残余奥氏体量的影响

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熔化在50kg中频炉中进行.钒铁在熔化后期加 入,加钒铁前预脱氧,以提高钒的回收率.出炉前加 0. 1%的纯铝终脱氧.采用自制专用变质剂S 进行变 质处理,加入量为0. 4% ,包内冲入.出炉温度1 500℃, 浇注温度1 450℃. 试验用试样
热处理对高钒高速钢中残余奥氏体量的影响
魏世忠1, 2
, 朱金华1
, 龙锐3
(1. 西安交通大学 材料学院, 陕西 西安 710049; 2. 河南科技大学 材料学院, 河南 洛阳 471003;
3. 河南省耐磨材料工程技术研究中心, 河南 洛阳471003)
摘　要: 采用铁磁性法测定了高钒高速钢中残余奥氏体量。研究了淬火温度和回火温度对高钒高速钢残余奥氏体
量的影响。结果表明: 淬火加热温度升高, 残余奥氏体量增加; 回火温度升高, 残余奥氏体量降低。在试验淬火温度范围
(900～ 1100℃)内 450℃以下回火, 奥氏体含量变化不明显; 回火温度达到 550℃时, 残余奥氏体含量迅速降低。
关键词: 高钒高速钢; 热处理; 铁磁性法; 残余奥氏体
中图分类号: TG156　　　文献标识码:A　　　文章编号: 100123814 (2004) 1220031202
Ef fect of Hea t Trea tmen t on Res idua l Austen ite of High Vanadium High Speed Steel
WEI S h i2 zhong
1, 2
, ZHU J in 2 hua
1
, LONG Ru i
3
(1. S chool of M aterials S cience and E ng ineering , X i′ an J iaotong U niversity , X i′ an 710049,Ch ina;
2. S chool of M aterials S cience and E ng ineering , H enan U niversity of S cience and T echnology ,L uoy ang 471039, Ch ina;
3. H enan E ng ineering R esearch Center of W earM aterial,L uoy ang 471039,Ch ina)
Abstract : The amount of residual austenite in h igh vanadium h igh speed steel w as measured by fer romagnet ism
method . The effect of heat t reatment technique on the amount of residual austenite w as studied . The results show that
the amount of residual austenite r ise w hen the quench ing temperature increase, but the amount of residual austenite de2
crease w hen the temper ing temperature increase;A t the quench ing temperature (900～ 1100℃)w hen the temper ing tem2
perature is low er than 450℃, the amount of residual austenite has sligh t var iat ion . But the amount of residual austenite
sharp ly decreases if the temper ing temperature reaches 550℃.
Key words : h igh vanadium h igh speed steel ; heat t reatment; fer romagnet method; residual austenite

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