Influence of Tool Design and Process Parameters on Friction Stir Weldability of AZ31B Magnesium Alloy
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.
Wen Jin and Chao-Ming Lin
M. Jáňa et al., "Influence of Tool Design and Process Parameters on Friction Stir Weldability of AZ31B Magnesium Alloy", Advanced Materials Research, Vol. 1077, pp. 89-95, 2015