Friction-stir dissimilar welding of aluminium alloy to high strength steels: Mechanical properties and their relation to microstructure
Friction-stir dissimilar welding of aluminium alloy to high strength steels: Mechanical properties and their relation to microstructure
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DOI：
10.1016/j.msea.2012.06.076
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发表时间：
2012-10-30
期刊：
影响因子：
6.4
通讯作者：
Kaysser-Pyzalla, A.
中科院分区：
文献类型：
--
作者：
Coelho, R. S.;Kostka, A.;Kaysser-Pyzalla, A.
工业应用中轻质材料的使用是连接技术发展的推动力。搅拌摩擦焊(FSW)启发了不同材料的连接，因为它不涉及基本部件的批量熔化。对两种不同组织和强度的高强度钢(HSS)与AA6181-T4铝合金进行了搅拌摩擦焊接。本研究的目的是阐明不同的高速钢基材对接头效率的影响。使用相同的焊接参数/设置生产接头，并对接头的微观组织和机械性能进行表征。这两种接头都可以生产出来，没有任何缺陷。显微组织研究表明，两种接头的微观组织发展相似，尽管在铝合金(热和热机械影响区)中分离出的钢颗粒的大小和数量有所不同。焊接强度相似，表明接头效率主要取决于铝合金的热机械性能和热机械影响区的力学性能。(C)2012爱思唯尔B.V.保留所有权利。
The use of light-weight materials for industrial applications is a driving force for the development of joining techniques. Friction stir welding (FSW) inspired joints of dissimilar materials because it does not involve bulk melting of the basic components. Here, two different grades of high strength steel (HSS), with different microstructures and strengths, were joined to AA6181-T4 Al alloy by FSW. The purpose of this study is to clarify the influence of the distinct HSS base material on the joint efficiency. The joints were produced using the same welding parameter/setup and characterised regarding microstructure and mechanical properties. Both joints could be produced without any defects. Microstructure investigations reveal similar microstructure developments in both joints, although there are differences e.g. in the size and amount of detached steel particles in the aluminium alloy (heat and thermomechanical affected zone). The weld strengths are similar, showing that the joint efficiency depends foremost on the mechanical properties of the heat and the thermomechanical affected zone of the aluminium alloy. (c) 2012 Elsevier B.V. All rights reserved.