| 微观组织对2A12铝合金熔焊接头力学性能的影响 |
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| 引用本文： | 乔及森,余江瑞,苟宁年,袁小二.微观组织对2A12铝合金熔焊接头力学性能的影响[J].焊接学报,2011,32(9):5-8. |
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| 作者姓名： | 乔及森 余江瑞 苟宁年 袁小二 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料省部共建国家重点试验室,兰州,730050 |
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| 基金项目： | 国家自然科学基金资助项目(51065016); 甘肃省留学人员科技资助项目(1001ZBS113) |
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| 摘 要： | 采用TIG焊对2A12铝合金薄板进行焊接,并对接头的组织及力学性能相关性进行分析.金相观察发现焊缝及熔合区内晶粒粗大且不均匀,焊缝从边缘的柱状晶向中心的等轴晶过渡,熔合线附近出现粗细晶混杂分布.采用显微硬度及拉伸试验研究了焊接接头力学性能不均匀性.结果表明,硬度最小值处于焊缝的熔合区,拉伸试样亦断裂在该区,与组织分布相...
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| 关 键 词： | 焊接接头 微观组织 力学性能 低熔点共晶 |
| 收稿时间： | 2010/8/6 0:00:00 |
Development of microstructure influence on mechanical properties of fusion welding joints of aluminium alloy 2A12 |
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| QIAO Jisen,YU Jiangrui,GOU Ningnian and YUAN Xiaoer.Development of microstructure influence on mechanical properties of fusion welding joints of aluminium alloy 2A12[J].Transactions of The China Welding Institution,2011,32(9):5-8. |
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| Authors: | QIAO Jisen YU Jiangrui GOU Ningnian and YUAN Xiaoer |
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| Affiliation: | QIAO Jisen,YU Jiangrui,GOU Ningnian,YUAN Xiaoer(School of Material Science and Engineering,Lanzhou University of Technology,State Key Laboratory of Gansu New Non-ferrous Metal Materials,Lanzhou 730050,China) |
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| Abstract: | TIG welding has been carried out for thin plate of aluminium alloy 2A12,and the correlation between microstructure and mechanical properties was analyzed.Coarse and mixed grains were observed in welding area by means of metallographical analysis.From the edge to the center of welding seam,the volume grains changed to isometric grains,a mixed grain distribution was shown near the fusion line.Inhomogeneous mechanical behavior was studied by micro hardness and tensile testing.The results showed that minimal ha... |
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| Keywords: | welding point microstructure mechanical properties eutectic point |
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