通过人工预变形和时效的方法对热轧H型钢进行了应变时效处理。研究了应变时效对热轧H型钢低周疲劳寿命、循环应力响应和循环韧度的影响。研究结果表明,热轧H型钢和应变时效H型钢都表现出了良好的循环特性,都是以循环稳定为主的疲劳循环;热轧H型钢和应变时效H型钢都具有较好的高应变低周疲劳韧度,且应变时效对H型钢的低周疲劳循环韧度的影响较小。 The hot-rolled H-section steel was strain aged by artificial pre-deformation and aging methods. The effects of strain aging on low cycle fatigue life, cyclic stress response and cycle toughness of hot rolled H-section steel were studied. The results show that both hot-rolled H-beam and strain-aged H-beam show good cycling characteristics, and all of them are fatigue cycles based on cyclic stability. Both hot-rolled H-beam and strain-aged H- Toughness and fatigue life, and strain aging on the H-beam low cycle fatigue cycle toughness less.