Progress in FSSW of DP800 high strength automotive steel
- Kyffin W.J. ,
- Threadgill P.L. ,
- Lalvani H. ,
- et al
- Kyffin W.J. ,
- Threadgill P.L. ,
- Lalvani H. and
- Wynne B.P.
Links
Repository
Description
Friction stir spot welding (FSSW) was performed on dual phase 800 high strength automotive steel (0.14%C, 0.23%Si, 1.52%Mn) to establish the effect of tool rotation speed (750-2400 rpm) for a number of weld cycles featuring different Z-axis plunge rates (25-60 mm/min) and dwell times (0-1.75 s), and the weld quality was assessed by lap shear and hardness testing and examination of macro- and microstructures. The spot welds were produced in the overlap configuration using a silicon nitride tool perpendicular to the workpiece surface. Results obtained for lap shear strength and microhardness distribution are presented, and a typical macrosection and microstructures from parent material, HAZ and stirred zone are shown. The energy inputs required for FSSW and resistance spot welding were compared.
6th International Symposium, 10-13 Oct 2006, Session 6B: Friction Stir Spot Welding, Paper 02
Related Records
