期刊
MATERIALS CHARACTERIZATION
卷 59, 期 12, 页码 1705-1715出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2008.03.016
关键词
Aluminium alloy; Galvanised steel; Intermetallic compounds; Dissimilar joining
类别
资金
- Languedoc Roussillon Region
A new means of assembling galvanised steel to aluminium involving a reaction between solid steel and liquid aluminium was developed, using laser and gas tungsten arc welding (GTAW) processes. A direct aluminium melting strategy was investigated with the laser process, whereas an aluminium-induced melting by steel heating and heat conduction through the steel was carried out with the GTAW process. The interfaces generated during the interaction were mainly composed of a 2-40 mu m thick inter-metallic reaction layers. The linear strength of the assemblies can be as high as 250 N/mm and 190 N/mm for the assemblies produced respectively by laser and GTAW processes. The corresponding failures were located in the fusion zone of aluminium (laser assemblies), or in the reaction layer (GTAW assemblies). (C) 2008 Elsevier Inc. All rights reserved.
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