ZG1Cr10MoWVNbN耐热钢平衡析出相的热力学计算及分析
Thermodynamic Calculation and Analysis of Equilibrium Precipitated Phases in ZG1Cr10MoWVNbN Heat-Resistant Steel
摘 要
采用了Thermo-Calc软件, 对ZG1Cr10MoWVNbN耐热钢在400～1 600 ℃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, 1 200 ℃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1 190,880, 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M6C型碳化物;钨能促进对钢具有强化作用的Laves相的析出。
Thermo-Calc软件
析出相
heat-resistant steel
Thermo-Calc software
precipitated phase
Abstract
The equilibrium phases existing in ZG1Cr10MoWVNbN 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, M23C6 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.
中图分类号 TG146.1
所属栏目
基金项目 国家“863”计划项目(2002AA526013); 黑龙江省自然科学基金重点资助项目(ZJG0605-02); 哈尔滨工程大学基础研究项目(HEUFT05015)
收稿日期 2011/11/20
修改稿日期 2011/8/17
网络出版日期
作者单位点击查看
备注唐恒(1986-), 男, 安徽宿州人, 硕士研究生。
引用该论文: TANG Heng,ZHAO Cheng-zhi,LUO Fei,WEI Shuang-sheng. Thermodynamic Calculation and Analysis of Equilibrium Precipitated Phases in ZG1Cr10MoWVNbN Heat-Resistant Steel[J]. Materials for mechancial engineering, 2011, 35(11): 98～102
唐恒,赵成志,骆飞,魏双胜. ZG1Cr10MoWVNbN耐热钢平衡析出相的热力学计算及分析[J]. 机械工程材料, 2011, 35(11): 98～102
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