| 搅拌摩擦与氩弧焊铝合金接头疲劳性能的比较 |
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| 引用本文： | 王快社,张小龙,王训宏,徐可为. 搅拌摩擦与氩弧焊铝合金接头疲劳性能的比较[J]. 材料研究学报, 2009, 23(1) |
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| 作者姓名： | 王快社 张小龙 王训宏 徐可为 |
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| 作者单位： | 1. 西安建筑科技大学冶金工程学院,西安,710055
2. 西安交通大学金属材料强度国家重点实验室,西安,710049 |
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| 基金项目： | 国家自然科学基金，陕西省重点学科(材料加工工程)资助项目 |
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| 摘 要： | 建立了铝合金焊接接头的S-N曲线,对比分析了搅拌摩擦和氩弧焊两种工艺对其焊接接头疲劳性能的影响,结果表明:在载荷相同的条件下,铝合金搅拌磨擦焊接接头的疲劳性能优于氩弧焊接头,搅拌摩擦焊接头的疲劳寿命N=106次的疲劳强度为59-65 MPa,搅拌摩擦焊接接头具有比氩弧焊接头更为细小的晶粒和狭窄的焊接热影响区,阻碍了滑移带的形成和裂纹的扩展,从而提高了接头的疲劳性能,铝合金焊接接头的缺陷是主要的疲劳裂纹源.
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| 关 键 词： | 金属材料 搅拌摩擦焊 TIG焊接 疲劳性能 |
Comparison of fatigue properties between friction stir welds and TIG welds for Al alloy |
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| WANG Kuaishe,ZHANG Xiaolong,WANG Xunhong,XU Kewei. Comparison of fatigue properties between friction stir welds and TIG welds for Al alloy[J]. Chinese Journal of Materials Research, 2009, 23(1) |
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| Authors: | WANG Kuaishe ZHANG Xiaolong WANG Xunhong XU Kewei |
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| Abstract: | The effect of welding processes friction stir welds(FSW)and tungsten inert gas welding (TIG)on fatigue properties of LF2 aluminum welded joints was analyzed,and the S-N curves of the welded joints were established.The results show that the fatigue properties of FSW welded joints are better than that of TIG welded joints.Fatigue strength of friction stir welds is 59-65 MPa under N=10~6. The microstructures of joints are comparatively fine grain and narrow HAZ zone in the FSW welds which inhibit the growth of... |
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| Keywords: | metallic materials friction stir welding TIG welding fatigue property |
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