| 2A70-T6铝合金T型接头搅拌摩擦焊工艺研究 |
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| 引用本文： | 何志宏,李宝华,唐众民,鄢江武. 2A70-T6铝合金T型接头搅拌摩擦焊工艺研究[J]. 兵器材料科学与工程, 2011, 34(5): 78-81 |
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| 作者姓名： | 何志宏 李宝华 唐众民 鄢江武 |
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| 作者单位： | 二炮驻8602厂军事代室;红阳机械厂,湖北孝感,432000 |
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| 摘 要： | 采用3种规格的搅拌头进行2A70-T6铝合金T型接头搅拌摩擦焊试验,并对焊缝横截面进行观察以及焊缝抗拉强度的测试。结果表明:焊缝中前进侧过渡区的金属变化急剧,拉长的晶粒成流线状分布,返回侧过渡区的金属变化缓和,由焊核区细小晶粒缓慢过渡至母材较大的晶粒;随着搅拌针根部直径的增加,焊核的宽度也增大;为了获得无缺陷的接头,焊接速度增大时,顶锻压力必须协同增大,随着顶锻压力的增大,焊缝的抗拉强度也增大。
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| 关 键 词： | 2A70-T6 铝合金 T型接头 搅拌摩擦焊 |
Friction stir welding process for T-joint of 2A70-T6 aluminum alloy |
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| HE Zhihong,LI Baohua,TANG Zhongmin,YANG Jiangwu. Friction stir welding process for T-joint of 2A70-T6 aluminum alloy[J]. Ordnance Material Science and Engineering, 2011, 34(5): 78-81 |
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| Authors: | HE Zhihong LI Baohua TANG Zhongmin YANG Jiangwu |
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| Affiliation: | HE Zhihong1,LI Baohua2,TANG Zhongmin2,YANG Jiangwu2(1.The Second Artillery Military Representative of 8602,2.Hongyang Machinery Plant,Xiaogan 432000,China) |
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| Abstract: | Friction stir welding for T-joint of 2A70-T6 aluminum alloy was carried out by using three different kinds of welding tool,the microstructure of cross section of weld was observed and the tensile strength of weld was tested.The results show that the microstructure in transition zone at the advancing side of weld changes dramatically,the elongated grains are distributed as streamlined flow,the microstructure in transition zone at the retreating side of weld changes smoothly,the equiaxed fine grain in the nug... |
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| Keywords: | 2A70-T6 aluminum alloy T-joint friction stir welding |
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