ZG4Cr25Ni35WNb离心铸造耐热合金钢应力热疲劳性能  

Properties of Stress Heat fatigue of ZG4Cr25Ni35WNb Heat Resistant Alloy Steel by Centrifugal Casting

作　　者：刘志国[1] 

机构地区：[1]广东工业大学材料科学与工程系

出　　处：《金属热处理》1997年第8期12-15,共4页Heat Treatment of Metals

摘　　要：在恒应力条件下对石油化工用离心铸造耐热合金ＺＧ４Ｃｒ２５Ｎｉ３５ＷＮｂ钢铸态时效及渗碳后的应力热疲劳性能进行的研究表明：该耐热合金钢铸态具有最高的热疲劳寿命，不宜在高温且存在渗碳介质的环境下长期使用。The properties of stress heat fatigue of ZG4Cr25Ni35WNb heat resistant alloy Steel by centrifugal casting used in petrochemical industry after casting aging or carburizing were investigated under the constant pressure.The results showed that the heat fatigue life of the alloy steel as casting was the longest and it couldnt be used under the condition of high temperature and with carburizing reagent.

关 键 词：耐热合金钢 ε-N曲线 热疲劳 耐热钢 

分 类 号：TG142.73[一般工业技术—材料科学与工程]