【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 12Cr1MoV钢经高温长时加热后成分变化所引起的种种效应更多还原

【Abstract】 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.更多还原