回火温度对9Ni钢低温韧性的影响  

Effect of Tempering Temperature on Low Temperature Toughness of 9Ni Steel

作　　者：卞欣 

机构地区：[1]研究院

出　　处：《南钢科技与管理》2013年第2期14-17,40,共5页NISCO Technology and Management

摘　　要：研究了不同热处理工艺对9Ni铜低温韧性的影响规律，通过X射线衍射的方法测定了不同回火温度下钢中的逆转变奥氏体含量，分析了不同回火温度条件下9Ni钢中逆转变奥氏体含量以及与其低温韧性的内在联系。结果表明，当采用淬火回火工艺进行热处理时，回火温度与9Ni钢的低温韧性有着较密切的关系，9Ni钢低温韧性的优劣不仅取决于逆转变奥氏体的含量，更取决于逆转变奥氏体在基体上的分布状况。The paper studies the effect of different heat treatment process on low temperature toughness of 9Ni Steel. The content of reversed austenite in 9Ni steel at different tempering temperature can be measured by X-ray diffraction method. By analyzing the internal relations with its low temperature toughness, the results show that when heat treatment adopting quenching and tempering process, tempering temperature closely relates to low temperature toughness of 9Ni Steel. Low temperature toughness depends on not only the content of reversed austenite but also distribution on the matrix of reversed austenite.

关 键 词：9NI钢 热处理工艺 回火温度逆 转变奥氏体 低温韧性 

分 类 号：TG457.11[金属学及工艺—焊接]