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现有低活化铁素体/马氏体(RAFM)钢的室温力学性能和高温力学性能都还不能完全满足下一代聚变反应堆的高效率运行条件,选用电渣重熔技术熔炼了一种新的RAFM钢。研究了淬火温度和回火温度对新RAFM钢微观组织和力学性能的影响,利用光学显微镜和扫描电镜对其性能进行了测试与分析。结果表明,RAFM试验钢采用980℃淬火+780℃回火热处理工艺时,组织为板条马氏体;室温抗拉强度为680.79MPa,伸长率为31.1%,断面收缩率为71.91%。
Existing low activation ferrite / martensitic (RAFM) steel room temperature mechanical properties and high temperature mechanical properties are still not fully meet the next generation of fusion reactors high efficiency operating conditions, the selection of ESR smelting a new RAFM steel. The effects of quenching temperature and tempering temperature on the microstructure and mechanical properties of the new RAFM steel were studied. The properties of the new RAFM steel were tested and analyzed by optical microscope and scanning electron microscope. The results show that the microstructure of martensite is tempered martensite at 980 ℃ and tempering at 780 ℃. The tensile strength at room temperature is 680.79MPa, the elongation is 31.1% and the reduction of area is 71.91%.