Influence of aluminium alloy type on dissimilar friction stir lap welding of aluminium to copper
Influence of aluminium alloy type on dissimilar friction stir lap welding of aluminium to copper
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DOI：
10.1016/j.jmatprotec.2013.05.004
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发表时间：
2013-11-01
影响因子：
6.3
通讯作者：
Rodrigues, D. M.
中科院分区：
文献类型：
--
作者：
Galvao, I.;Verdera, D.;Rodrigues, D. M.
使用相同的焊接参数将可热处理（AA 6082）和不可热处理（AA 5083）铝合金搅拌摩擦搭接焊接到铜上。焊接的宏观和微观分析能够根据铝合金类型检测焊接结果的重要差异。虽然在AA 5083/铜焊缝中检测到由无效材料混合引起的重要内部缺陷，但在AA 6082/铜焊缝中检测到相对均匀的材料混合。显微硬度测试和X射线衍射分析也表明两种类型焊缝的显微组织演变存在重要差异。AA 5083/铜焊缝的TEM和EBSD为基础的研究表明，在搅拌铝区域，其中不典型的高硬度值注册的亚微米尺寸的显微组织的形成。(C)2013 Elsevier B. V.保留所有权利。
A heat-treatable (AA 6082) and a non-heat treatable (AA 5083) aluminium alloys were friction stir lap welded to copper using the same welding parameters. Macro and microscopic analysis of the welds enabled to detect important differences in welding results, according to the aluminium alloy type. Whereas important internal defects, resulting from ineffective materials mixing, were detected for the AA 5083/copper welds, a relatively uniform material mixing was detected in the AA 6082/copper welds. Micro-hardness testing and XRD analysis also showed important differences in microstructural evolution for both types of welds. TEM and EBSD-based study of the AA 5083/copper welds revealed the formation of submicron-sized microstructures in the stirred aluminium region, for which untypically high hardness values were registered. (C) 2013 Elsevier B.V. All rights reserved.