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Abstract
In the present study, 6 mm nominal thickness dissimilar steel plates were joined using friction stir welding. The materials used were duplex stainless steel and low alloy structural steel. The weld was assessed by metallographic examination and mechanical testing (transverse tensile and fatigue). Microstructural examination identified four distinct weld zones and a substantially hard region within the stir zone at the base of the weld tool pin. Fatigue specimens demonstrated high level fatigue life and identified four distinct fracture modes.
Acknowledgement
The authors gratefully acknowledge the financial support of the European Union, which has funded this work as part of the Collaborative Research Project HILDA (High Integrity Low Distortion Assembly) through the Seventh Framework Programme (SCP2-GA-2012-314534-HILDA).