搅拌摩擦焊和钨极氩弧焊焊接接头的残余应力
Residual Stress of Friction Stir and TIG Welds
摘 要
利用X射线衍射法测量了铝合金搅拌摩擦焊和钨极氩弧焊(TIG)焊接接头表面的残余应力分布.结果表明：两种接头在焊缝区及其周围的残余应力存在着明显的变化,在平行于焊缝方向,应力呈“W”型的分布,焊缝外残余应力值迅速下降;钨极氩弧焊焊接接头残余应力的最大值位于热影响区;在热影响区,搅拌摩擦焊接接头残余应力平均值比TIG焊接接头的约低15%～25%.
钨极氩弧焊
残余应力
friction stir welding
TIG welding
residual stress
Abstract
X ray diffraction method was used to determine distribution of the surface residual stress in the joints by friction stir welding and tungsten inert gas welding for aluminum alloys.There exist obvious stress variation in two kinds of welds.Distribution of residual stresses in longitudinal direction show W shape.The residual stress droped rapidly outside the friction stir weld.The maximum tensile residual stress exist in the heat affected zone (HAZ).Compared to that of TIG welds in HAZ,the residual stress values of friction stir welds is lower by about 15%-25%.
中图分类号 TG453.9
所属栏目
基金项目 陕西省科技计划资助项目(2003K07-G8)
收稿日期 2006/1/12
修改稿日期 2006/4/1
网络出版日期
作者单位点击查看
备注王训宏(1981-),男,江西九江人,硕士研究生.
引用该论文: WANG Xun-hong,WANG Kuai-she,SHEN Yang,XU Ke-wei. Residual Stress of Friction Stir and TIG Welds[J]. Materials for mechancial engineering, 2007, 31(1): 26～28
王训宏,王快社,沈洋,徐可为. 搅拌摩擦焊和钨极氩弧焊焊接接头的残余应力[J]. 机械工程材料, 2007, 31(1): 26～28
被引情况:
【1】窦作勇,张鹏程,李云,王茂银,董平,陈力,郑林,裴利程, "铝合金搅拌摩擦焊接头内部残余应力的短波长X射线测试",机械工程材料 39, 107-110(2015)
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参考文献
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【3】Webster P J.Synchrostron X-ray residual strain scanning of a friction stir weld[J].Strain Analysis,2001,36(1):61-70.
【4】Schindler H J,Cheng W,Finnie I.Experimental determination of stress intensity factors due to residual stresses[J].Experimental Mechanics,1997,37(3):272-277.
【5】常铁军,祁欣.材料现代分析测试方法[M].哈尔滨:哈尔滨工业大学出版社,1999.
【6】袁发荣,伍尚礼.残余应力的测试与计算[M].长沙:湖南大学出版社,1987.
【7】唐慕尧.焊接技术[M].北京:机械工业出版社,1988.
【8】张定铨,何家文.材料中残余应力的X射线衍射分析和作用[M].西安:西安交通大学出版社,1999.
【9】何小东,张建勋,裴怡,等.钛合金薄板激光焊接和TIG焊接残余应力数值模拟[J].机械工程材料,2005,29(3):25-27.
【10】苏晓莉,王快社,周俊杰,等.铝合金搅拌摩擦焊接参数对温度场的影响[J].轻合金加工技术,2006,34(2):40-42.
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