12Cr1MoV钢高温长时加热过程中基体成分的变化  

Variations of Matrix Composition of 12Cr1MoV Steel During High Temperature Long-term Heating

作　　者：杨瑞成[1] 王晖[1] 郑丽平[1] 移建永[1] 李贵智[1] 

机构地区：[1]甘肃工业大学材料学院,兰州730050

出　　处：《金属热处理》2002年第4期34-37,共4页Heat Treatment of Metals

基　　金：甘肃省自然科学基金资助项目 (ZS0 0 1 A2 2 0 4 6 C)

摘　　要：用扫描电镜能谱分析测定了 12Cr1MoV钢高温长时加热后基体 (α相 )内合金元素含量的变化 ,发现当Larson Miller参数从P =2 0 0 0 0到P =2 2 0 0 0变化时 ,Mo含量下降了 2 / 3,Cr与V下降 1/ 3。并且由晶粒中心到晶界存在明显的合金元素浓度分布梯度 ,这些均符合扩散动力学规律。本文还讨论了By means of SEM EDS analysis of alloy elements contents in 12Cr1MoV steel matrix after high temperature long term heating.It was found that Mo content is reduced by two thirds,Cr and V are reduced by one third,and there are the distribution gradient of alloy element concentration,which correspond with the natures ofdiffusional kinetics.Also,the effects of composition variations of steel 12Cr1MoV after high temperature long term heating have been discussed.

关 键 词：耐热钢 基体 成分 Larson-Miller参数 浓度梯度 扩散 加热 

分 类 号：TG161[金属学及工艺—热处理] TG142.73[金属学及工艺—金属学]