• CN:11-2187/TH
  • ISSN:0577-6686

›› 2004, Vol. 40 ›› Issue (5): 150-154.

• 论文 • 上一篇    下一篇

焊接残余应力对超声波冲击处理焊接接头疲劳性能的影响

王东坡;霍立兴;张玉凤;葛智海   

  1. 天津大学材料科学与工程学院;深圳赤弯胜宝旺工程有限公司质检部
  • 发布日期:2004-05-15

EFFECT OF WELDING RESIDUAL STRESS ON FATIGUE PERFORMANCE OF THE WELDED JOINTS TREATED BY ULTRASONIC PEENING

Wang Dongpo; Huo Lixing;Zhang Yufeng;Ge Zhihai   

  1. School of Materials Science and Engineering, Tianjin University Department of Quality Inspection,Shenzhen Chiwan Shengbaowang Engineering Company Limited
  • Published:2004-05-15

摘要: 采用含高值焊接残余应力的非承载纵向角接接头进行了Q235B钢焊态与超声波冲击态的疲劳对比试验,研究了焊接残余应力对超声冲击处理焊接接接头疲劳性能的影响规律。结果表明:焊接残余应力对超声波冲击处理后焊接接头疲劳性能的影响较小。使用不含高值焊接残余应力的小试件来评估超声波冲击处理对相同接头形式及板厚的大型焊接结构疲劳性能的改善程度可能是偏于安全的。

关键词: 超声波冲击, 焊接残余应力, 焊接接头, 疲劳性能

Abstract: The fatigue contrast tests of Q235B steel unload longitudinal fillet welded joints containing high welding residual stress and in two different state:ultrasonic peening and as welded condition are directed. And the effect on fatigue performance of the welded joints treated by ultrasonic peening from welding residual stress is studied. Test results showed that:the effect on fatigue performance of the welded joints treated by ultrasonic peening from welding residual stress is small. It is safe that use the small specimens which are treated by ultrasonic peening and don’t contain high welding residual stress to appraise the fatigue performance improvement on large-scale welded structures which are as the same junction style and thickness as the small.

Key words: Fatigue performance, Ultrasonic peening, Welded joint, Welding residual stress

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