热处理工艺对高强度Mn-Mo-Ni核电钢板组织和NDT温度的影响  

Study on Fracture Toughness of Mn-Mo-Ni High Strength Steel for Nuclear Power Engineering under Different Heat Treatment Conditions

作　　者：李肖 吴涛 谢东 杨少华 温海荣 赵晓辉 Li Xiao;Wu Tao;Xie Dong;Yang Shaohua;Wen Hairong;Zhao Xiaohui(HBIS Group Wusteel Company)

机构地区：[1]河钢集团舞钢公司

出　　处：《宽厚板》2024年第3期40-42,共3页Wide and Heavy Plate

摘　　要：通过高倍显微镜、扫描电镜,对30 mm、90 mm厚度高强度Mn-Mo-Ni核电用钢板在不同热处理状态下的组织和断裂韧性展开研究,并依据ASTM E208-95a(R2000)标准分别测定了30 mm厚度钢板表面、90 mm厚度钢板厚度1/4处在不同热处理状态下的无塑性转变(NDT)温度,对比分析试验钢板NDT温度产生差异的原因。结果表明:淬火+回火工艺生产的钢板相比于正火+回火工艺生产的钢板,其NDT温度明显降低;不同淬火+回火工艺生产的钢板,其板厚1/4处NDT温度也存在差异。The microstructure and fracture toughness of 30 mm and 90 mm thick high-strength Mn-Mo-Ni steel plate for nuclear power engineering under different heat treatment conditions are studied by high magnification microscope and scanning electron microscope.According to ASTM E208-95a(R2000)standard,the non-plastic transition temperature(NDTT)of 30 mm thickness steel plate at surface and 90 mm thickness steel plate at 1/4 thickness position under different heat treatment conditions are measured respectively,and the causes for the difference in NDT temperature of test steel plate are compared and analyzed.The results show that the NDT temperatures of the steel plate produced by quenching and tempering process are significantly reduced compared with those produced by normalizing and tempering process.The NDT temperature position of the steel plate produced by different quenching and temperating processes are also different at 1/4 of the thickness position.

关 键 词：Mn-Mo-Ni高强钢 热处理 NDT温度 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG156[金属学及工艺—金属材料] TM623[金属学及工艺—金属学]