| 超细晶粒钢筋焊接接头的疲劳强度 |
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| 引用本文： | 侯振波,史耀武,李晓延,田志凌,何长红. 超细晶粒钢筋焊接接头的疲劳强度[J]. 钢铁研究学报, 2007, 19(2): 43-0 |
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| 作者姓名： | 侯振波 史耀武 李晓延 田志凌 何长红 |
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| 作者单位： | 1. 北京工业大学材料科学与工程学院,北京,100022
2. 钢铁研究总院结构材料研究所,北京,100081 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 超细晶粒钢是一种细晶强化的新一代钢铁材料，焊接加工对焊接接头疲劳性能的影响是人们关注的问题。参照建设部《钢筋焊接接头试验方法标准》的规定，对超细晶粒钢建筑钢筋闪光对焊、电渣对焊接头的疲劳寿命进行了测试。测试结果表明：高载荷下，闪光对焊接头的疲劳寿命明显优于电渣对焊接头，随着载荷的降低，2种接头的差距变小。在200万次循环下，两者的疲劳强度基本相当。
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| 关 键 词： | 超细晶粒钢 钢筋 焊接接头 疲劳强度 |
| 文章编号： | 1001-0963(2007)02-0043-04 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2006-07-28 |
Fatigue Strength of Welded Joints for Architecture Reinforcement Steel Bar With Ultrafine Grains |
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| HOU Zhen-bo,SHI Yao-wu,LI Xiao-yan,TIAN Zhi-ling,HE Chang-hong. Fatigue Strength of Welded Joints for Architecture Reinforcement Steel Bar With Ultrafine Grains[J]. Journal of Iron and Steel Research, 2007, 19(2): 43-0 |
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| Authors: | HOU Zhen-bo SHI Yao-wu LI Xiao-yan TIAN Zhi-ling HE Chang-hong |
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| Affiliation: | 1. School of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China; 2. Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China |
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| Abstract: | Ultrafine grained steel is a new generation steel.A greatdeal of attention to has been paid the effect of welding process on fatigue performance.In the present work,fatigue lifetime has been measured for flash butt welded joints and electrical slag welded joints of the ultrafine grained steel,based on a standard of State Architecture Ministry named "Testing method of reinforcement steel bar welded joint".It is found that the fatigue lifetime of flash welded joint is higher than that of electrical slag welded joint.With the decrease of load,the gap between the both becomes small.For the of 2 000 000 cycles,the fatigue strength of the both is almost the same. |
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| Keywords: | ultrafine grained steel welded joint fatigue strength |
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