| 包铝层对2A12铝合金搅拌摩擦焊焊缝电化学性能的影响 |
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| 引用本文： | 董春林,沈长斌,王忠志.包铝层对2A12铝合金搅拌摩擦焊焊缝电化学性能的影响[J].大连铁道学院学报,2009(6):42-45. |
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| 作者姓名： | 董春林 沈长斌 王忠志 |
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| 作者单位： | 北京航空制造工程研究所;大连交通大学材料科学与工程学院; |
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| 摘 要： | 对1.35 mm厚、带包铝层的2A12铝合金搅拌摩擦焊（FSW）同种焊缝的金相组织进行了分析,在此基础上,在室温0.2 mol/L NaHSO3＋0.6 mol/L NaC l溶液中,对母材（带包铝层的2A12）和同种焊缝进行了静态腐蚀失重和动电位极化扫描的对比研究.金相组织观察表明：FSW焊缝组织出现了明显的变化,焊核区发生了动态再结晶,形成细小的等轴晶结构.静态腐蚀失重和动电位极化扫描结果表明：包铝层起到较好的防护作用,母材的电化学性能要优于焊缝的电化学性能.
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| 关 键 词： | 铝合金 包铝层 搅拌摩擦焊 金相组织 电化学腐蚀 |
The Effect of Aluminum Clad on the Electrochemical Properties of the Similar Weld of Friction-Stir Welding of 2A12Aluminum Alloy |
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| DONG Chun-Lin,SHEN Chang-Bin,WANG Zhong-Zhi.The Effect of Aluminum Clad on the Electrochemical Properties of the Similar Weld of Friction-Stir Welding of 2A12Aluminum Alloy[J].Journal of Dalian Railway Institute,2009(6):42-45. |
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| Authors: | DONG Chun-Lin SHEN Chang-Bin WANG Zhong-Zhi |
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| Affiliation: | DONG Chun-Lin1,SHEN Chang-Bin2,WANG Zhong-Zhi2(1.Beijing Aeronautical Manufacturing Technology Research Institute,Beijing 100024,China,2.School of Materials Science , Engineering,Dalian Jiaotong University,Dalian 116028,China) |
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| Abstract: | Microstructures,static weight loss and potentiodynamic polarization curves were carried out on the Friction-stir welds of Al clad 2A12 alloy with the thickness of 1.35 mm.The results indicated that the microstructures of the Nugget had been remarkably reshaped,and a dynamical recrystallization took place on the zone of the weld nugget and an equiaxed grain structure formed.The static weight loss and potentiodynamic polarization curves results indicated that the resistance of corrosion of the base material(w... |
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| Keywords: | aluminum alloy alclad frictionstir welding microstructures electrochemical corrosion |
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