采用了Thermo—Calc软件，对ZGlCr10MoWVNbN耐热钢在4001600℃间存在的平衡相进行了计算分析，并就合金元素钼、钨、铌、钒对主要析出相的影响进行了分析。结果表明：耐热钢碳的质量分数为0．11％时，1200℃淬火后的基体组织为单一马氏体；主要平衡析出相有MX、M23C6和Laves相，它们的开始析出温度分别为1190，880，780℃；先析出富铌的MX，再析出富钒的MX；钼的质量分数大于1．5％时会形成对钢有害的M5C型碳化物；钨能促进对钢具有强化作用的Laves相的析出。
The equilibrium phases existing in ZGICr10MoWVNbN heat-resistant steel between 400 ℃ and 1 600 ℃ were calculated by Thermo-Calc software, and the effects of alloy elements of Mo, W, Nb, V on major precipitated phases were studied. The results show that the matrix of heat-resistant steel after quenching at 1 200 ℃ was single martensite when the content of carbon was 0. 11wt%. The main equilibrium precipitated phases were MX, M2a C6 and Laves, which corresponded to the precipitation temperature of 1 190 ℃, 880℃ and 780℃ respectively. The MX phase rich in Nb precipitated firstly, then those rich in V. M6C which was harmful to the steel, precipitated when the content of alloy element Mo was more than 1. 5wt%. W could accelerate the precipitation of Laves phase, consequently strengthened the steel.
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