北京科技大学学报2012，Vol.34Issue(10)：1145-1151,7.
V、Ta微合金化12Cr低活性F/M钢的优化设计
Optimization design of V, Ta microalloyed 12Cr low-activation F/M steel
摘要
Abstract
A low-activation F/M steel 12Cr3WVTa micro-alloyed with V and Ta was designed by Thermo-Calc thermodynamic sim- ulation in combination with experimental methods. Its microstructure and precipitation after water quenching at 1 050℃ and then tem- pering at 780 ℃ were examined by means of optical microscopy ( OM), scanning electron microscopy ( SEM), transmission electron microscopy (TEM), and energy dispersive spectrometry (EDS). The results show that the microstructure of the steel after quenching and tempering contains mainly tempered martensite with a small amount of 8-ferrite, as well as precipitates M23 C6 and MX ( M = V, Ta; X = C, N). M23 C6 carbides distribute mainly along the lath boundaries and the phase interfaces, while MX precipitates within the tempered martensite and the &ferrite. The steel has good tensile properties at room temperature and high temperature (600℃), and its tensile strength and yield strength are 507 MPa and 402 MPa at 600 ℃ , respectively, which meets the tensile property requirements of cladding tubes for supercritical water cooled reactors (SCWR).关键词
马氏体钢/铁素体钢/微合金化/显微组织/力学性能/水冷堆Key words
martensitic steel/ferritic steel/microalloying/microstructure/mechanical properties/water cooled reactors分类
矿业与冶金引用本文复制引用
肖翔,刘国权,胡本芙,陈少静..V、Ta微合金化12Cr低活性F/M钢的优化设计[J].北京科技大学学报,2012,34(10):1145-1151,7.基金项目
国家重点基础研究发展计划资助项目 （）
