LASER WELDING OF ULTRA-HIGH STRENGTH STEELS FOR AUTOMOTIVE APPLICATIONS
The work in this paper was concerned with the development of welding procedures for joining thin-sheet UHS steels, using fibre-delivered solid state lasers and establishing the strength and formability of the welds produced. Autogenous laser welding trials were conducted with three different fibre-delivered solid state lasers to achieve fully penetrating butt and lap welds in dual phase (DP), martensitic, transformation induced plasticity (TRIP), Usibor and boron steels of 0.8-1.5mm thickness and 600-1550N/mm2 tensile strength with similar and dissimilar material combinations. The hardening and softening behaviour in the fusion zone and the heat affected zone were determined. Influences of laser process parameters on welding speed, weld profile and joint performance were discussed.
Steve Shi Steve Westgate
TWI Ltd, Granta Park, Great Abington, Cambridge CB21 6AL, UK
国际会议
第三届太平洋国际激光与光学应用会议(PICALO 2008)
北京
英文
134-139
2008-04-16（万方平台首次上网日期，不代表论文的发表时间）