文献类型：期刊文献

中文题名：12Cr1MoV珠光体耐热钢长期服役中碳化物的变化及对性能的影响

英文题名：Carbide Transition of 12Cr1MoV Pearlite Heat-resisting Steel in Long-term Service and It's Influence on Material Performance

作者：张而耕[1];童遂放[2];王琼琦[3];关凯书[3]

机构：[1]华东理工大学材料科学与工程学院,上海200237;[2]上海市安全生产科学研究所,上海200233;[3]华东理工大学机械与动力工程学院,上海200237

年份：2009

卷号：33

期号：9

起止页码：28

中文期刊名：机械工程材料

外文期刊名：Materials For Mechanical Engineering

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：12Cr1MoV钢;失效分析;碳化物;固溶体

外文关键词：12Cr1MoV steel; failure analysis; carbide; solid solution

摘要：采用电解萃取、X射线衍射和能谱分析等手段,对一个失效的12Cr1MoV钢过热器管中碳化物的变化、组织中主要碳化物的尺寸和所占比例对材料性能的影响进行了研究。结果表明:长期高温服役的珠光体耐热钢中碳化物的聚集、长大以及碳化物类型的转变是导致材料性能劣化的重要原因;碳化物分析可为实际生产中12Cr1MoV珠光体耐热钢的判废提供了一种新方法,该方法比珠光体球化等级分析方法更为可靠、实用。
Influences of the carbide transition, carbide size and content in a failed 12Cr1MoV steel superheater on the material properties were studied by means of electrolytic extraction, XRD and EDS. The results show that the important reason of material property deterioration of the pearlite heat-resisting steel in the long-term high temperature service was due to the aggregation and growing up of carbides as well as transition of the carbide type. Analyses of carbides might provide a method to judge whether the 12Cr1MoV pearlite heat-resisting steel should be regarded as useless or not. This method was more reliable and practical than the analytical method of pearlite spheroidization.