Duplex stainless steel loses impact toughness quickly during its service at nuclear power plant station as pipe and boiler. Aging induced spinodal decomposition in ferrite phase is the mechanism behind this degradation. This work uses electropulsing to treat the aged steel at the service temperature. The charpy impact toughness and Vickers micro-hardness were recovered significantly. Thermoelectric power is recommended to measure the degree of spinodal decomposition in the aging processing, which was recovered by > 83% by the electropulsing treatment. It was proved that the anti-aging treatment was not due to the Ohm heating. Instead, the electropulsing-induced extra free energy change of − 891 J/mol provided thermodynamic driving force for the regeneration processing. Electropulsing-enhanced diffusivity enables the anti-aging processing to be completed quickly.

双相不锈钢在核电站中作为管道和锅炉使用时会很快失去冲击韧性。铁氧体相中的老化诱发的旋节线分解是该降解背后的机理。这项工作使用电脉冲在工作温度下对时效钢进行处理。夏比冲击韧性和维氏显微硬度得到显着恢复。建议使用热电功率来测量老化过程中的旋节线分解程度，通过电脉冲处理可以回收大于83％的分解力。事实证明，抗老化处理不是由于欧姆加热引起的。取而代之的是，电脉冲诱导的-891 J / mol的额外自由能变化为再生处理提供了热力学驱动力。