ZG1Cr10MoWVNbN钢中碳化物的计算和分析  

Calculation and Analysis of Carbides for ZG1Cr10MoWVNbN Steel

作　　者：唐恒[1] 赵成志[1] 骆飞[1] 魏双胜[2] 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001 [2]哈尔滨汽轮机厂有限责任公司设计研究院,黑龙江哈尔滨150046

出　　处：《钢铁研究学报》2011年第12期31-34,53,共5页Journal of Iron and Steel Research

基　　金：国家高技术研究发展计划项目(2002AA526013);黑龙江省自然科学基金重点项目(ZJG0605-02)

摘　　要：利用Thermo-Calc热力学软件,对ZG1Cr10MoWVNbN耐热钢在400～1600℃间存在的平衡相进行计算,并通过电化学萃取的方法制取钢中的碳化物粉末,进行XRD分析和形貌观察。结果表明:ZG1Cr10MoWVNbN耐热钢在400～1600℃间的主要平衡析出相为MX、M23C6和Laves相,它们所对应的开始析出温度为1190、880和780℃。MX型碳氮化物为富铌的NbC和NbN,M23C6型碳化物为富铬的Cr23C6。钢中所析出的碳化物尺寸在50～100nm之间,形状主要为不规则球形和棒状,弥散的分布在钢的基体中。The equilibrium phases from 400-1600℃ were calculated by means of thermo-Calc software.The carbide powder was made by the methods of electrochemical extraction.The morphology observation and analysis of XRD were performed.The results show that the equilibrium phases precipitated from 400-1600℃ of the steel are MX,M23C6 and Laves,which corresponds to the precipitating temperature of 1190,880 and 780℃ respectively.The carbides of MX type are NbC and NbN rich in Nb,those of M23C6 type are Cr23C6 rich in Cr.The size of carbides is between 50-100nm.Its shape is irregular spherical and column,which dispersed in the matrix of the steel.

关 键 词：耐热钢 碳化物 萃取 THERMO-CALC 

分 类 号：TG142.1[一般工业技术—材料科学与工程]