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.
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