| 7050-T7451铝合金的搅拌摩擦焊接试验分析 |
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| 引用本文： | 王廷,朱丹阳,刘会杰,冯吉才.7050-T7451铝合金的搅拌摩擦焊接试验分析[J].焊接学报,2009,30(8):109-112. |
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| 作者姓名： | 王廷 朱丹阳 刘会杰 冯吉才 |
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| 作者单位： | 1. 哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001
2. 哈尔滨工业大学,材料科学与工程学院,哈尔滨,150001 |
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| 摘 要： | 在不同焊接参数下进行了7050-T7451铝合金的搅拌摩擦焊接试验,对接头显微组织进行了光学和TEM分析,并测试了接头的抗拉强度和硬度分布.焊接工艺参数通过影响接头微观组织和焊接缺陷来影响接头的力学性能,在转速800r/min和焊速200mm/min的情况下,接头的抗拉强度最高达到母材强度的88%.焊接热输入较高时,接头的拉伸断裂出现在热影响区,而热输入较低时,焊缝底部出现未焊合,接头从此处首先发生开裂.结果表明,焊核区发生了动态再结晶和沉淀相溶解;热影响区发生了沉淀相粗化,晶间出现无沉淀带.
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| 关 键 词： | 搅拌摩擦焊 铝合金 微观组织 力学性能 断裂特征 |
| 收稿时间： | 2008/6/16 0:00:00 |
Experimental investigation of friction stir welding of 7050 aluminum |
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| WANG Ting,ZHU Danyang,LIU Huijie and FENG Jicai.Experimental investigation of friction stir welding of 7050 aluminum[J].Transactions of The China Welding Institution,2009,30(8):109-112. |
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| Authors: | WANG Ting ZHU Danyang LIU Huijie and FENG Jicai |
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| Affiliation: | 1.State Key Laboratory of Advanced Welding Production Technology;Harbin Institute of Technology;Harbin 150001;China;2.Department of Material Science;China |
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| Abstract: | 7050-T7451 aluminum alloy was welded in friction stir welding at different welding parameters.The structure of the joints was studied with optical microscopy and TEM.Tensile strength and hardness distribution of the joints were tested.The mechanical properties,the microstructure and welding defects of the joints were controlled by changing welding parameters.The tensile strength of the joint was up to 88% of that of base metal at the parameters with tool traverse speed of 200 mm/min and rotation rate of 800... |
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| Keywords: | friction stir welding aluminum alloy micro structure mechanical property fracture characterization |
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