Laser assisted hybrid friction stir welding of carbon steel
- Fujii H. ,
- Tatsuno T. ,
- Tsumura T. ,
- et al
- Fujii H. ,
- Tatsuno T. ,
- Tsumura T. ,
- Ueji R. ,
- Nakata K. and
- Nogi K.
Links
Repository
Description
A hybrid friction stir welding (FSW) technique, comprising FSW and a YAG laser (power 2 kW) for preheating ahead of the tool, was developed to decrease tool load and defects. An SS 400 ferrite-pearlite carbon steel (0.16%C, 0.01%Si, 0.49%Mn) was welded under various process conditions, and the microstructure and mechanical properties of the welded joints were studied. FSW was undertaken at a rotational speed of 400 rpm and a welding speed of 100-800 mm/min. The microstructure of the stir zone was observed by optical microscopy. Mechanical properties were characterised by Vickers microhardness measurements and transverse tensile testing. The relationship between stir zone tensile strength, microstructure refinement and welding speed is discussed.
7th International Symposium, 20-22 May 2008, 6B: Steel 2, Paper 01
Related Records
