双相区亚温淬火对核电Mn-Mo-Ni钢300 mm级厚壁锻件的性能提升和组织优化  

Performance Improvement and Microstructure Optimization of Nucler Mn-Mo-Ni Steel 300 mm Class Thick Wall Forgings after Dual-Phase Subtemperature Quenching

作　　者：施熔刚[1] 姜述杰[1] 张强生 李巨峰[1] 王京[1] SHI Ronggang;JIANG Shujie;ZHANG Qiangsheng;LI Jufeng;WANG Jing(Nuclear and Radiation Safety Center,Ministry of Environmental Protection,Beijing 100082,China)

机构地区：[1]环境保护部核与辐射安全中心

出　　处：《热加工工艺》2018年第22期224-229,233,共7页Hot Working Technology

摘　　要：对300mm级核电用Mn-Mo-Ni钢进行了模拟亚温淬火工艺研究。结果表明:经亚温淬火后的材料组织,其碳化物分布更加弥散化,晶粒更细,残余奥氏体和位错密度明显降低,提升了材料抗辐照脆化能力,并得到了最佳工艺参数和力学性能。The process of simulating intercritical quenching for 300mm grade nuclear power Mn-Mo-Ni steel was studied.The results show that,the microstructure of the material after sub-temperature quenching is more dispersed,the grains are finer,the residual austenite and dislocation density are obviously reduced,the anti-irradiation embrittlement ability of the materials is improved,and the optimum technological parameters and mechanical properties are obtained.

关 键 词：亚温淬火 核电用Mn-Mo-Ni钢 组织 性能 辐照脆化 

分 类 号：TG162.8[金属学及工艺—热处理]