热处理后9%Ni钢中逆转变奥氏体的稳定性  

Stability of reversed austenite in 9%Ni steel after heat treatment

作　　者：陈蕊[1] 包翠敏[1] 杨智鹏 林琳[1] Chen Rui;Bao Cuimin;Yang Zhipeng;Lin Lin(Shenyang Blower Works Group Corporation,Shenyang Liaoning 110142,China)

机构地区：[1]沈阳鼓风机集团股份有限公司,辽宁沈阳110142

出　　处：《金属热处理》2023年第2期228-231,共4页Heat Treatment of Metals

基　　金：辽宁省重大专项(2020JH1/10100018)。

摘　　要：利用扫描电镜、透射电镜、X射线衍射仪以及显微硬度计等对热处理及深冷处理后9%Ni钢中逆转变奥氏体稳定性进行了研究。结果表明,不稳定态逆转变奥氏体在深冷温度为-120℃时已基本转化完毕,且经深冷后的520℃回火稳定处理后,逆转变奥氏体含量变化较小,对9%Ni钢进行深冷处理是极为必要的。Stability of reversed austenite in the 9%Ni steel after heat treatment and cryogenic treatment was studied by means of SEM, TEM, XRD and microhardness tester. The results show that the transformation of unstable reversed austenite is basically completed when the cryogenic temperature is^(-1)20 ℃, and the content of reversed austenite changes a little tempered at 520 ℃ after the cryogenic treatment. It is extremely necessary to carry out the cryogenic treatment for the 9%Ni steel.

关 键 词：9%NI钢 热处理 深冷处理 逆转变奥氏体 

分 类 号：TG161[金属学及工艺—热处理]