Abstract
Dissimilar friction stir spot welds (FSSW) between the magnesium and aluminum alloys are joined, using a novel approach called refill friction stir spot welding. The present work aims to evaluate the macrostructural and mechanical properties of refill friction stir spot welded AZ31B and AA 6061-T6 alloys in two combinations, i.e., identical Mg-to-Mg and dissimilar Mg-to-Al joints, and the results are compared with the results obtained in conventional friction stir spot welding. The hardness profiles of the similar welds had the appearance of a W-shape, and the Thermo mechanically affected zone and heat-affected zone of both methods had lower hardness values than the rest of the weld. Along with the interface between the aluminum and magnesium sheets, a thin intermetallic compound layer of Al12Mg17 has been identified, which has led to an increase in hardness. The static shear strength of both similar and dissimilar refill spot friction welds was much greater than that of traditional spot friction welds. In both similar and dissimilar spot friction welds, two distinct failure scenarios are discovered.
Subject
Industrial and Manufacturing Engineering,Mechanical Engineering,Mechanics of Materials
Reference27 articles.
1. Friction Stir Welding. International Patent Application no. PCT/GB92/02203 and Great Britain Patent Application no. 9125978.8;Thomas,1991
2. Mazda Media Release: ‘Mazda Develops World’s First Aluminum Joining Technology Using Friction Heat’
http://www.mazda.com/publicity/release/0227e.html
3. Friction welding of aluminum cuts energy cost by 99%;Hancock;Weld. J.,2004
4. The Role of Material Location on the First Mode of Metal Transfer and Weld Formation in Dissimilar Friction Stir Welded Thin Sheets
5. ANALYSIS AND CHARACTERIZATION OF FORMING BEHAVIOR ON DISSIMILAR JOINTS OF AA5052-O TO AA6061-T6 USING UNDERWATER FRICTION STIR WELDING
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