国产A508-3钢的低周疲劳性能研究

Investigation on Low-cycle Fatigue Property of Domestic A508-3Steel

结合承担的973课题,系统开展了国产A508-3钢的低周疲劳性能研究。其目的是通过低周疲劳性能测试、显微硬度计算、断口形貌观察以及微观结构分析,获得材料的疲劳性能数据,评价国产A508-3钢的疲劳性能,并为下一步辐照性能的研究提供数据基础。研究结果表明,国产A508-3钢的低周疲劳性能符合ASME的设计规范,具有循环软化的特征。

By combining the subject of the Task Force 973 ,the investigation on low-cycle fatigue property of the domestic A508-3 steel was carried out .The purpose is to obtain material fatigue performance data and to evaluate A 508-3 steel fatigue property through the low-cycle fatigue test , micro hardness calculation , specimen fracture morphology and microstructure analysis .The results will provide reference data basis for following irradiation property study of the materials .The results show that the low-cycle fatigue property of the domestic A 508-3 steel conforms to the ASM E design specifications ,and has the charactristic of cyclic softening .