| 7A52铝合金便携式搅拌摩擦焊接头的组织与性能分析 |
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| 引用本文： | 李奇,赵军军,张平,曾庆强.7A52铝合金便携式搅拌摩擦焊接头的组织与性能分析[J].装甲兵工程学院学报,2010,24(4). |
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| 作者姓名： | 李奇 赵军军 张平 曾庆强 |
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| 作者单位： | 装甲兵工程学院,装备再制造技术国防科技重点实验室,北京,100072 |
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| 基金项目： | 国家自然科学基金资助项目，国防科技重点实验室基金资助项目 |
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| 摘 要： | 采用便携式搅拌摩擦焊设备,对3mm厚的7A52铝合金薄板进行了焊接,对焊接头的显微组织和机械性能进行了观察测试。研究结果表明:焊接头可分为动态再结晶区、热-机影响区和母材3个区域,而没有明显的热影响区。动态再结晶区组织发生再结晶,生成细小的等轴晶粒;热-机影响区有塑性变形流线,且范围较窄;母材区保持着原来的轧制组织。接头硬度的最薄弱环节在热-机影响区。接头抗拉强度达到母材的70%左右,能够满足战场应急抢修的需求。
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| 关 键 词： | 便携式搅拌摩擦焊 焊接接头 焊接组织 显微硬度 抗拉强度 |
Structure and Property Investigation of Portable Friction Stir Welding of 7A52 Aluminum Alloy |
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| LI Qi,ZHAO Jun-jun,ZHANG Ping,ZENG Qing-qiang.Structure and Property Investigation of Portable Friction Stir Welding of 7A52 Aluminum Alloy[J].Journal of Armored Force Engineering Institute,2010,24(4). |
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| Authors: | LI Qi ZHAO Jun-jun ZHANG Ping ZENG Qing-qiang |
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| Institution: | LI Qi; ZHAO Jun-jun; ZHANG Ping; ZENG Qing-qiang (National Defense Key Laboratory for Remanufacturing Technology; Academy of Armored Force Engineering; Beijing 100072; China); |
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| Abstract: | A portable friction stir welding device is used to weld 7A52 aluminum alloy plate of 3 mm thin.The structure and mechanical property of welded joint are analyzed.The results show the welded joint can be divided into three regions as follows:the dynamically recrystallized zone,the thermo-mechanically affected zone and the base metal.There is no distinct heat affected zone.Dynamic recrystallization takes place in the dynamically recrystallized zone and fine grains are achieved.There are plastic deformation st... |
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| Keywords: | portable friction stir welding welded joint welded structure microhardness tensile strength |
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