| 2A12/7075异种铝合金搅拌摩擦焊接头成形及力学性能 |
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| 引用本文： | 佘思越,张德芬,韩金理,宫丽杰,程菲,曾德智. 2A12/7075异种铝合金搅拌摩擦焊接头成形及力学性能[J]. 有色金属工程, 2019, 0(5): 17-22 |
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| 作者姓名： | 佘思越 张德芬 韩金理 宫丽杰 程菲 曾德智 |
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| 作者单位： | 西南石油大学材料科学与工程学院;油气藏地质及开发工程国家重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(51774249);四川省高等学校油气田材料重点实验室基金项目(X151517KCL16)~~ |
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| 摘 要： | 为研究不同焊接速度对2A12/7075异种铝合金搅拌摩擦焊(Friction Stir Welding,FSW)接头成形和力学性能的影响,在室温下对焊接接头进行冲击实验和拉伸实验,采用扫描电子显微镜(SEM)和能谱仪(EDS)对断口形貌和成分进行表征分析,采用光学显微镜(OM)对接头横截面进行观察。结果表明,焊接接头呈非对称形,前进侧宽度小于后退侧宽度;焊速为120mm/min时,接头冲击功最高达到18.45J,焊速为140mm/min时抗拉强度最优,为239.68MPa,延伸率为7.56%。随着焊速的增加,焊缝表面起毛倾向减小,出现隧道孔缺陷的倾向增加;接头抗拉强度与塑韧性随焊速的增加而提高,但焊速为140mm/min时,焊核区出现了隧道孔缺陷,造成接头的韧性下降;拉伸断口呈现上部韧性断裂和下部解理断裂,EDS元素分析韧性断裂部分存在第二相粒子Mg_2Si。
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| 关 键 词： | 搅拌摩擦焊 异种铝合金 接头成形 力学性能 |
Forming and Mechanical Properties of Dissimilar 2A12 and 7075 Alloy Joint by Friction Stir Welding |
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| SHE Siyue,ZHANG Defen,HAN Jinli,GONG Lijie,CHENG Fei,ZENG Dezhi. Forming and Mechanical Properties of Dissimilar 2A12 and 7075 Alloy Joint by Friction Stir Welding[J]. Nonferrous Metals Engineering, 2019, 0(5): 17-22 |
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| Authors: | SHE Siyue ZHANG Defen HAN Jinli GONG Lijie CHENG Fei ZENG Dezhi |
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| Affiliation: | (School of Material and Engineering, Southwest Petroleum University, Chengdu 610500, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu 610500, China) |
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| Abstract: | SHE Siyue;ZHANG Defen;HAN Jinli;GONG Lijie;CHENG Fei;ZENG Dezhi(School of Material and Engineering, Southwest Petroleum University, Chengdu 610500, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu 610500, China) |
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| Keywords: | Friction Stir Welding dissimilar aluminum alloy joint forming mechanical property |
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