ZG1Cr10MoWVNbN钢中碳化物的计算和分析

钢铁研究学报, 2011, 23(12): 31-34.

ZG1Cr10MoWVNbN钢中碳化物的计算和分析

1.1. 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

1.1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Heilongjiang 150001,Harbin, China 2. Design and Research Institute, Harbin Turbine Co Ltd, Heilongjiang 150046, Harbin, China>

基金项目: 省部级自然科学基金国家科技攻关课题

关键词：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?还嬖蚯蛐魏桶糇矗稚⒌姆植荚诟值幕逯小? 耐热钢 , carbide , extraction , thermo-calc

Calculation and Analysis of Carbides for ZG1Cr10MoWVNbN Steel

TANG Heng1 , ZHAO Cheng-zhi1 , LUO Fei1 , WEI Shuang-sheng2

Keywords： heat-resistant steel , 碳化物 , 萃取 , Thermo-Calc

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)

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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