低合金高强度H型钢的低周疲劳性能  

High Strain Low Cycle Fatigue for Low-Alloy High Strength H-Heam

作　　者：付常伟[1] 赵新华[1] 郭跃华[1] 韩蕾蕾[1] 

机构地区：[1]莱芜钢铁集团有限公司技术中心,山东莱芜271105

出　　处：《物理测试》2013年第2期26-29,共4页Physics Examination and Testing

摘　　要：阐述了钢材高应变低周疲劳性能在抗震设计中的重要性,讨论了静载荷强度、塑性与低周疲劳性能间的关系,并使用MTS810系列试验机对低合金高强度H型钢的高应变低周疲劳性能进行了研究。试验表明,莱钢生产的Q345BH型钢在100周时的循环韧度值(σa.Δεt)为29.8J/cm3,具有较好的高应变低周疲劳性能。The importance of high strain low cycle fatigue performance on aseismic design of construction steel was introduced in this paper,and the relationship between high strain low cycle fatigue and static load strength and ductility was discussed and the high strain low cycle fatigue of the low alloy and high strength H-beam was studied by using a MTS810 series fatigue testing machine.The result shows that Q345B H-beams produced in Laiwu Steel with a circulation toughness value（σa·Δεt） of 29.8 J/cm^3 after 100 cycles have a good high strain low cycle fatigue performance.

关 键 词：高应变低周疲劳 抗震 静载荷强度 塑性 H型钢 

分 类 号：TG142.33[一般工业技术—材料科学与工程]