中国电力2012，Vol.45Issue(10)：42-47,6.
国产TP310HCbN钢在高温应力下的组织结构
Microstructure of Domestic TP310HCbN Steel After High-Temperature Creep-Rupture Test
摘要
Abstract
In order to investigate the strengthening mechanism and failure of domestic TP310HCbN steel, the microstructure of domestically-made TP3l0HCbN steel under different stress at high temperature by means of transmission electron microscopy (TEM) and scanning electron microscopy (SEM) is studied. The results show that the precipitates after the creep-rupture test are M23C6 carbides with face centered cubic (FCC) structure located both inside grains and at grain boundaries and NbCrN nitride particles with tetragonal structure dispersed within grains. After long time creep-rupture testing, a phase precipitated. The hardness of the creep-rupture samples is enhanced due to the dispersed M23C6 and NbCrN particles. M23C6 carbides with lattice parameter of three times of the austenite matrix grow in a cube to cube orientation relationship with the matrix. The amount of M23C6 carbide particles increases with the testing time extended. For the domestic TP3lOHCbN steel, more attention should be paid to the distribution, size and amount of cr phase and M23C6 during service.关键词
TP310HCbN钢/组织结构/高温应力/M23C6/σ相/NbCrN/硬度Key words
TP310HCbN steel/ microstructure/ high temperature creep-rupture/ M23C6/ cr phase/ NbCrN/ hardness分类
信息技术与安全科学引用本文复制引用
郭岩,林琳,侯淑芳,王博涵..国产TP310HCbN钢在高温应力下的组织结构[J].中国电力,2012,45(10):42-47,6.基金项目
2010年度中国电机工程学会"电力青年科技创新"资助项目 （）
