Low cycle fatigue behaviors of SA508-3 low-alloy steel were investigated in room-temperature air, high-temperature air and in light water reactor (LWR) water environments. The fatigue mean curve and design curve for the low-alloy steel are developed based on the fatigue data in room-temperature and high-temperature air. The environmental fatigue model for low-alloy steel is developed by the environmental fatigue correction factor (F_en) methodology based on the fatigue data in LWR water environments with the consideration of effects of strain rate, temperature, and dissolved oxygen concentration on the fatigue life.

中文翻译：

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国产核级低合金钢环境疲劳修正系数模型

研究了 SA508-3 低合金钢在室温空气、高温空气和轻水反应堆 (LWR) 水环境中的低周疲劳行为。低合金钢的疲劳平均曲线和设计曲线是根据室温和高温空气中的疲劳数据开发的。低合金钢环境疲劳模型是根据轻水堆水环境中的疲劳数据，考虑应变率、温度和溶解氧浓度对疲劳寿命的影响，采用环境疲劳修正系数（F _en）方法建立的.