锻压技术

应变时效对高强建筑用热轧H型钢低周疲劳性能的影响

英文标题：Influence of strain aging on low cycle fatigue property of hot rolled H-shaped steel used for high strength construction

作者：张忠良

单位：成都艺术职业学院

关键词：应变时效热轧H型钢低周疲劳

分类号：

出版年,卷(期):页码：2014,39(7):102-105

摘要：

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。

Through the method of artificial pre-deformation and aging,the strain aging treatment on hot rolled H-shaped steel was done. The effects of strain aging on low cycle fatigue life, cyclic stress response and cyclic toughness of hot rolled H -shaped steel were studied. The results show that hot rolled H-shaped steel and strain aging H-shaped steel both show excellent cycle characteristics,which are all the fatigue cycle with cycle-stability-based; hot rolled H-shaped steel and strain aging H-shaped steel both have good low cycle fatigue toughness, and strain aging H-shaped steel has less influence on low cycle fatigue toughness of H steel.

基金项目：

国家自然科学基金资助项目（29973029）；成都艺术职业学院科技基金课题（KJ13306）

张忠良（1981－），男，本科，讲师

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