摘要
本文着重研究了奥—贝球铁残余奥氏体的稳定性及其影响因素;并首次提出了一个衡量残余奥氏体稳定性高低的数量指标,该指标可以方便地借助实验来测定。结果表明,通过改变化学成份或热处理规范,可以调节残余奥氏体的稳定性。同时还发现,奥—贝球铁的残余奥氏体存在着反稳定化现象。
In this paper, the effect factots that affect the stability of retained austenite in austenitic-Bainitic Ductile Iron were studied; meanwhile, a handy way that was used to measure the stability ef retained austenite was raised. The results show: throwgh changing the heat treatment norms and the compositions of Ductile Iron, the stability of retained austenite can be regulated, The antistabilizing phenomenon of retained austenite has been observed.
关键词
球铁
残余
奥氏体
稳定性
贝氏体
Austenitic-Bainitic Ductile Iron,retained austenite,stability