An exploratory study was conducted to investigate the feasibility of friction stir spot welding advanced high-strength steel sheet metals. The fixed pin approach was used to weld 600MPa dual phase steel and 1310MPa martensitic steel. A single tool, made of polycrystalline cubic boron nitride, survived over one hundred welding trials without noticeable degradation and wear. Solid-state metallurgical bonding was produced with welding time in the range of 2 to 3 seconds, although the bonding ligament width was relatively small. The microstructures and hardness variations in the weld regions are discussed. The results from tensile-shear and cross-tensile tests are also presented.
Friction Stir Spot Welding of Advanced High-Strength Steels - A Feasibility Study
Sae Technical Papers
SAE 2005 World Congress & Exhibition ; 2005
2005-04-11
Aufsatz (Konferenz)
Englisch
Friction stir spot welding of advanced high-strength steels - a feasibility study
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