期刊
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
卷 13, 期 5, 页码 430-437出版社
TAYLOR & FRANCIS LTD
DOI: 10.1179/174329308X341852
关键词
Al alloys; Steel; Interfaces; Braze welding; Intermetallic compounds; Dissimilar joining
The joining of DC04 steel to 6016-T4 Al alloy is achieved by laser braze welding using a 4047 (Al-12Si) filler wire and a brazing flux. The dissimilar joining is obtained both by welding the parent 6016 alloy to the 4047 filler wire, producing a continuous bonding without apparent macroscopic flaws, and by reactive wetting of the molten Al alloy on the solid steel, resulting in the formation of a thin layer of Fe-Al-Si intermetallic compounds at the steel/bead interface. The linear strength of the assemblies can be as high as 190 N mm 21, with a failure generally located in the reaction layer of the steel/bead interface. Last, the strength of the assemblies is shown to increase linearly with the reaction layer width.
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