焊接工艺参数对2024铝合金搅拌摩擦焊接特性影响的研究
发布时间：2018-07-21 20:45
【摘要】：采用搅拌摩擦焊对2024铝合金进行焊接试验,研究了其焊接工艺参数中添加不同环氧树脂含量的碳化硅粉末、搅拌头旋转速度对焊缝成形、宏观组织、微观组织和力学性能的影响规律。结果表明:当添加剂为碳化硅+20wt%环氧树脂时,能够较好地成形,焊缝硬度较高,具有更佳的性能;同时搅拌摩擦焊搅拌头的转速对焊件影响较大,转速越高时焊缝表面越光滑,"洋葱瓣"越不明显,本试验中当搅拌头转速在800 r/min时,碳化硅粉末与母材混合较好,分布均匀。研究结果为改善铝合金搅拌摩擦焊焊接接头的力学性能提供了必要的理论依据和试验依据。
[Abstract]:The welding experiments of 2024 aluminum alloy were carried out by friction stir welding. The effects of rotating speed of stirring head on weld formation and macrostructure of 2024 aluminum alloy were studied by adding silicon carbide powder with different content of epoxy resin into the welding process parameters. The effect of microstructure and mechanical properties. The results show that when the additive is silicon carbide 20wt% epoxy resin, it can be formed well, the hardness of weld is higher and the performance is better, and the rotating speed of friction stir welding head has a great influence on the welding parts. The higher the rotating speed is, the more smooth the weld surface is and the less obvious the "onion flap" is. In this experiment, when the rotating speed of the stirring head is 800 r/min, the sic powder and the base metal are mixed well and the distribution is uniform. The results provide the necessary theoretical and experimental basis for improving the mechanical properties of friction stir welding joint of aluminum alloy.
【作者单位】： 武汉理工大学能源与动力工程学院;
【基金】：武汉理工大学自主创新基金项目(166805005)
【分类号】：TG453.9
[Abstract]:The welding experiments of 2024 aluminum alloy were carried out by friction stir welding. The effects of rotating speed of stirring head on weld formation and macrostructure of 2024 aluminum alloy were studied by adding silicon carbide powder with different content of epoxy resin into the welding process parameters. The effect of microstructure and mechanical properties. The results show that when the additive is silicon carbide 20wt% epoxy resin, it can be formed well, the hardness of weld is higher and the performance is better, and the rotating speed of friction stir welding head has a great influence on the welding parts. The higher the rotating speed is, the more smooth the weld surface is and the less obvious the "onion flap" is. In this experiment, when the rotating speed of the stirring head is 800 r/min, the sic powder and the base metal are mixed well and the distribution is uniform. The results provide the necessary theoretical and experimental basis for improving the mechanical properties of friction stir welding joint of aluminum alloy.
【作者单位】： 武汉理工大学能源与动力工程学院;
【基金】：武汉理工大学自主创新基金项目(166805005)
【分类号】：TG453.9
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