Preprint Article Version 1 NOT YET PEER-REVIEWED

Effect of Tool Geometry and Process Parameters on Microstructure and Mechanical Properties of Friction Stir Spot Welded 2024-T3 Aluminum Alloy Sheets

  1. School of Applied Sciences, Marmara University, Goztepe Campus, Kadikoy, 34722 Istanbul, Turkey
Version 1 : Received: 16 September 2016 / Approved: 18 September 2016 / Online: 18 September 2016 (09:09:41 CEST)

How to cite: Murtulmuş, M. Effect of Tool Geometry and Process Parameters on Microstructure and Mechanical Properties of Friction Stir Spot Welded 2024-T3 Aluminum Alloy Sheets. Preprints 2016, 2016090057 (doi: 10.20944/preprints201609.0057.v1). Murtulmuş, M. Effect of Tool Geometry and Process Parameters on Microstructure and Mechanical Properties of Friction Stir Spot Welded 2024-T3 Aluminum Alloy Sheets. Preprints 2016, 2016090057 (doi: 10.20944/preprints201609.0057.v1).

Abstract

Aluminum alloy Al 2024-T3 were successfully joined using friction stir spot jwelding joining (FSSW). Satisfactory joint strengths were obtained at different welding parameters (tool rotational speed, tool plunge depth, dwell time) and tool pin profile (straight cylindrical, triangular and tapered cylindrical). Resulting joints were welded with welded zone. The different tools significantly influenced the evolution on the stir zone in the welds. Lap-shear tests were carried out to find the weld strength. Weld cross section appearance observations were also done. The macrostructure shows that the welding parameters have a determinant effect on the weld strength (x: the nugget thickness, y: the thickness of the upper sheet and SZ: stir zone). The main fracture mode was pull out fracture modes in the tensile shear test of joints. The results of tensile shear tests showed that the tensile-shear load increased with increasing rotational speed in the shoulder penetration depth of 0.2 mm. Failure joints were obrerved in the weld high shoulder penetration depth and insufficient tool rotation.

Subject Areas

pin geometry; friction stir spot welding; mechanical properties; aluminum alloy

Readers' Comments and Ratings (0)

Discuss and rate this article
Views 132
Downloads 119
Comments 0
Metrics 0
Discuss and rate this article

×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.