采用电化学动电位再活化法（EPR）研究了经950℃和1050℃固溶处理304奥氏体不锈钢晶间腐蚀敏化度I2/Ia、敏化时间t和敏化温度T之间关系，根据腐蚀速率Rmjzy与微观腐蚀形貌绘制了304不锈钢敏化的TTs曲线，探讨了固溶处理温度改变对TTS曲线的影响。结果表明，1050℃固溶处理试样的耐晶间腐蚀性能优于950℃固溶处理试样。%By means of electrochemical potentiodynamic reactivation （EPR） method the relationship among the sensitization degree（ Ir/Ia ）, sensitization time （t） and sensitization temperature （T） of austenitic stainless steel after solution at 950 ℃ and 1050 ℃ was studied. According to the corrossion rate R and corresponding micro corrosion morphology, the related Rmpy-T-t was plotted and the influence of solid-solution treatment temperature on TTS curve was discussed. The intergranular corrosion resistance of the samples soluted at 1050 ℃ was better than those soluted at 950 ℃.
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