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| 镀锌钢板与6061铝合金搭接搅拌摩擦钎焊 |
| Lap Friction Stir Brazing of Galvanized Steel Sheet and 6061 Aluminum Alloy |
| Received:January 30, 2017 Revised:March 10, 2018 |
| DOI：10.3969/j.issn.1674-6457.2018.02.020 |
| 中文关键词: 中间层 界面 搅拌摩擦钎焊 塑性流动 |
| 英文关键词: intermediate layer interface friction stir brazing plastic-flow |
| 基金项目:节能汽车产业共性关键技术创新主题专项（cstc2015zdcy-ztzx60010） |
| Author Name | Affiliation | | GAO Peng-yu | Chongqing University of Technology, Chongqing 400054, China | | XU Hui-bin | Chongqing University of Technology, Chongqing 400054, China | | LI Tian-yi | Chongqing University of Technology, Chongqing 400054, China | | LI Xiao-fei | Chongqing University of Technology, Chongqing 400054, China | | HU Sheng-qing | Chongqing University of Technology, Chongqing 400054, China | | ZHOU Tian-tao | Chongqing University of Technology, Chongqing 400054, China | | HUANG Hong | Chongqing University of Technology, Chongqing 400054, China |
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| 中文摘要: |
| 目的 分析Q235镀锌钢与6061铝合金搅拌摩擦钎焊接头在不同旋转速度下的组织性能。方法 使用0.3 mm的Zn作为中间层，通过搅拌摩擦钎焊，焊接6061铝合金与Q235镀锌钢，观察测试其接头组织和力学性能。结果 转速从660 r/min增加到1750 r/min时，随着进入到6061铝合金近缝区Zn元素的增加，铝合金搅拌区孔洞变小。界面Zn过渡层变薄。在适中的转速下，界面结合良好。接头最大平均拉剪力先增加后降低，界面显微硬度升高，硬度梯度增加。结论 搅拌头在1320 r/min转速下，测得搅拌摩擦钎焊接头平均拉剪力为2.33 kN。 |
| 英文摘要: |
| The paper aims to analyze structure property of Q235 galvanized steel and 6061 aluminum alloy friction stir brazing joint at different rotational speed. The 6061 aluminum alloy and Q235 galvanized steel was welded by friction stir brazing with 0.3 mm of Zn as intermediate layer to observe and test microstructure and mechanical properties of the joint with the increase of rotational speed from 660 r/min to 1750 r/mi, the voids in aluminum adjacent to the weld decreased gradually, the Zn layer at interface became thinner. Well joint was obtained at proper speed. The maximum average tensile shear force of joint increased first and then decreased. The microhardness of the interface and the hardness gradient increased. When the rotational speed is 1320 r/min, the maximum average tensile shear force of the joint is 2.33 kN. |
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