铝对反应堆压力容器508-3钢CCT曲线的影响  

Effect of Aluminum on CCT Curve of 508-3 RPV Steel

作　　者：何西扣[1] 刘正东[1] 林肇杰[1] 

机构地区：[1]钢铁研究总院特殊钢研究所,北京100081

出　　处：《物理测试》2014年第2期22-24,共3页Physics Examination and Testing

基　　金：国家科技重大专项基金项目(2011ZX06004-016)

摘　　要：采用Formastor-FⅡ自动相变仪测试了两组不同Al含量的508-3试验钢在不同冷速下的相变点,利用光学显微镜观察了不同冷速下试验钢的金相组织,并测试了维氏硬度,绘制了完整的CCT曲线。结果表明:添加一定量的Al可以降低508-3钢马氏体转变的临界冷速,降低贝氏体转变开始温度,推迟铁素体/珠光体转变,使得CCT曲线整体右移,从而提高了508-3钢的淬透性。The phase transformation temperatures of two comparative tested steels with different A1 content were measured by using Formastor-F Ⅱ phase transformation instrument. Subsequently, the microstructure of the sam- pies at different cooling rate was observed by optical microscopy, and the hardness was tested in a Viekers hardness tester. According to the test results, the complete CCT curve was drawn. The results show that A1 could lower the critical cooling rate of the martensite transformation and start temperature of bainite transformation, and delay the ferrite/pearlite transformation. The CCT curve of 508-3 steel with high A1 content shifted to the right so that the hardenability of 508-3 steel was increased.

关 键 词：铝 反应堆压力容器 508-3钢 CCT曲线 

分 类 号：TG115[金属学及工艺—物理冶金]