汽轮机转子钢时效老化作用研究  

Effect of Ageing on Turbine Rotor Steel

作　　者：袁立方[1] 陈荐[1] 何建军[1] 戎雪坤[1] 

机构地区：[1]长沙理工大学能源与动力工程学院,湖南长沙410076

出　　处：《发电设备》2007年第5期386-388,共3页Power Equipment

基　　金：湖南省教育厅重点项目(06A002)

摘　　要：对30Cr1Mo1V汽轮机转子钢在630℃温度下进行0—1200h的时效老化试验，对时效过程中的电阻率、维氏硬度及组织变化进行了测定。结果表明，30Cr1Mo1V转子钢随时间的增加，碳化物不断长大粗化，硬度逐渐减小，在800h后硬度下降速度较慢；电阻率在时效初期，随时间的增加而降低，而在800h后又开始缓慢上升。30Cr1Mo1V steam turbine rotor steel had been subjected to ageing at 630℃ for 0 - 1 200 h and rules that govern the ageing process found, by electric resistance and Viker hardness measurements, together with structural observations, during the course of ageing, Results show that carbides continuously grow larger and thicker with time, the hardness gradually reducing, but slower after 800 h; while the specific electrical resistance first drops with time but then, after 800 h, starts to rise again slowly.

关 键 词：能源与动力工程 汽轮机 转子钢 老化 电阻率 显微组织 硬度 

分 类 号：TG142[一般工业技术—材料科学与工程]