调质处理对9Ni钢低温韧性的影响  

作　　者：郭魁文[1,2] 朱健[1,2] 王秉新[1,2] 

机构地区：[1]抚顺市特种设备监督检验研究所,辽宁113006 [2]辽宁石油化工大学机械工程学院,辽宁113001

出　　处：《中国特种设备安全》2010年第3期51-53,共3页China Special Equipment Safety

摘　　要：采用扫描电镜、X射线衍射仪等分析手段研究了调质热处理工艺参数对9Ni钢组织和低温韧性的影响。结果表明,淬火温度及回火温度对低温韧性有显著的影响.随着淬火温度的升高,9Ni钢低温冲击韧性降低。随着回火温度的升高,回转奥氏体分布变得较为均匀、弥散,但其数量及低温韧性不是呈单调地增加,在一定温度下出现峰值。The effect of process parameters for quenching and tempering heat treatment （QT） on the microstructure and low temperature toughness in 9Ni steel were investigated by means of SEM and XRD, etc. The experimental results showed that quenching temperature and tempering temperature have great influence on cryogenic toughness. Low temperature toughness got worsening accompanied by increase of quenching temperature. The reversed austenite distributed dispersively and homogeneously with tempering temperature. However, the amount of reversed austenite and low temperature toughness did not increase monotonously, and reached maximum at a certain tempering temperature.

关 键 词：9Ni铜 热处理 低温韧性 回转奥氏体 

分 类 号：TG457.11[金属学及工艺—焊接] TQ221.211[化学工程—有机化工]