Influence of Tool Design and Process Parameters on Friction Stir Weldability of AZ31B Magnesium Alloy

Abstract:

The contribution is dealing with suggestion of tool geometry affecting weldability of Mg alloy AZ31B at friction stir welding. Four welding tool made of tool steel H13 (X40CrMoV5-1) with different geometry have been used at welding. Weld joints with high quality have been performed at following parameters: tool revolutions 600 rpm, welding speed 40 to 120 mm/min, angle of inclination 3° and pressure force 38 kN. Area of weld metal accounted fine-grained structure with average dimension of grain 13 μm. Structure is formed by solid solution α - Mg, Al-Mn particles and compound MgAl₃Mn₂. Strength of weld joint reaches value 265 MPa. Fracture areas accounted character of ductile fracture.

• Periodical: Advanced Materials Research (Volume 1077)
• Pages: 89-95
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1077.89
• Online since: December 2014
• Authors: Miroslav Jáňa, Milan Turňa, Ján Urminský, Marcel Kuruc, Peter Zifčák
• Keywords: Friction Stir Welding, Mg Alloy, Weld Properties, Welding Parameters, Welding Tools

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