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快中子增殖反应堆(FBR)堆芯用SUS316奥氏体不锈钢,长期用于650～950K高温,并接受2～3 x10~27m~-2’的快中子辐照。而316不锈钢在相平衡上属于亚稳定状态。在900K以下时效的316不锈钢通常看不到铁素体相,但在中子或重离子辐照下却能看到铁素体的生成。本实验研究了铁素体相的生成同析出物之间的关系,辐照量对铁素体生成和消失的影响以及铁素体生成量同辐照和温度的关系等。以10%冷加
Fast breeder reactor (FBR) core with SUS316 austenitic stainless steel, long-term for 650 ~ 950K high temperature, and to accept 2 ~ 3 x10 ~ 27m ~ -2 ’fast neutron irradiation. While 316 stainless steel belongs to metastable phase equilibrium. 316 stainless steel aging below 900K usually can not see the ferrite phase, but in the neutron or heavy ion irradiation can see the formation of ferrite. In this experiment, we studied the relationship between the formation of ferrite phase and the precipitates, the effect of irradiation amount on the formation and disappearance of ferrite, and the relationship between the formation of ferrite and irradiation and temperature. With 10% cold plus