This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Effect of Fiber Laser Welding on the Fatigue Properties of Dissimilar Welded Joints between DP980 and HSLA Steels
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 01, 2014 by SAE International in United States
Annotation ability available
Advanced high strength steels (AHSS) such as dual phase (DP) steels are now being extensively used to achieve light weighting goals of vehicles because of their attractive combination of formability and high strength. High strength low alloy (HSLA) steels are also used in lightweight bodies-in-white; DP and HSLA steels are therefore often laser butt-welded together into tailor welded blanks and to create other joints. Among the laser welding processes, fiber laser welding (FLW) has been shown to provide excellent quality welds, including superior weld mechanical properties, at higher speeds than those possible with other laser welding processes. Using dissimilarly welded DP980-HSLA blanks made with different welding parameters, the tensile properties were found to not change in spite of the HSLA being weaker than the soft zone on the DP980 side of the weld. The high heat input weld was found to have more softening in comparison to its base metal (BM) (55 HV versus 46 HV) and less bainite (8% versus 15%) in its FZ in comparison to the low heat input weld. The fatigue properties of the high heat input weld were also found to be better than those of the low heat input weld.
- Dennis Parkes - Ryerson Univ.
- Qingling Cui - Northeastern Univ. / Ryerson Univ.
- Daniel Westerbaan - Univ. of Waterloo
- Sashank Nayak - Univ. of Waterloo
- Norman Zhou - Univ. of Waterloo
- Frank Goodwin - International Zinc Association
- Daniel Liu - Teck Metals Ltd.
- Sanjiwan Bhole - Ryerson Univ.
- Daolun Chen - Ryerson Univ.
CitationParkes, D., Cui, Q., Westerbaan, D., Nayak, S. et al., "Effect of Fiber Laser Welding on the Fatigue Properties of Dissimilar Welded Joints between DP980 and HSLA Steels," SAE Technical Paper 2014-01-0990, 2014, https://doi.org/10.4271/2014-01-0990.
- Murray, J., and King, D., “Oil's tipping point has passed,” Nature 481:433-435, 2012.
- Joost, W.J., “Reducing vehicle weight and improving U.S. energy efficiency using integrated computational materials engineering,” Journal of Materials 64:1032-1038, 2012.
- Kim, H.J., Keoleian, G.A., and Skerlos, S.J., “Economic assessment of greenhouse gas emissions reduction by vehicle lightweighting using aluminum and high-strength steel,” Journal of Industrial Ecology 15:64-80, 2011 doi:10.1111/j.1530-9290.2010.00288.x.
- Xu, W., Westerbaan, D., Nayak, S.S., Chen, D.L., et al., “Tensile and fatigue properties of fiber laser welded high strength low alloy and DP980 dual-phase steel joints,” Materials and Design 43:373-383, 2013.
- Parkes, D., Xu, W., Westerbaan, D., Nayak, S.S., et al., “Microstructure and fatigue properties of fiber laser welded dissimilar joints between high strength low alloy and dual phase steels,” Materials and Design 51:665-675, 2013.
- Kwon, O., and Baik, S.C., “Manufacture and application of advanced high strength steel sheets for auto manufacture,” Pohang:POSCO;785-790, 2005.
- Farabi, N., Chen, D.L., and Zhou, Y., “Tensile properties and work hardening behavior of laser-welded dual-phase steel joints,” Journal of Materials Engineering and Performance 21:222-230, 2012.
- Farabi, N., Chen, D.L., and Zhou, Y., “Microstructure and mechanical properties of laser welded dissimilar DP600/DP980 dual-phase steel joints,” Journal of Alloys and Compounds 509:982-989, 2011.
- Quinto, L., Costa, A., Miranda, R., Yapp, D., et al., “Welding with high power fiber lasers - A preliminary study,” Materials and Design 28:1231-1237, 2007.
- Xia, M., Biro, E., Tian, Z., and Zhou, Y., “Effects of Heat Input and Martensite on HAZ Softening in Laser Welding of Dual Phase Steels,” ISIJ International 48(6):809-814, 2008.
- Biro, E., McDermid, J., Embury, J., and Zhou Y., “Softening Kinectics in the Subcritical Heat-Affected Zone of Dual-Phase Steel Welds,” The Minerals, Metals & Materials Society 41A:2348-2356, 2010.
- Kou, S., “Welding Metallurgy,” John Wiley and Sons, Inc., New Jersey, 2003.
- Shao, H., Gould, J., and Albright C., “Laser blank welding high-strength steels,” Metallurgical and materials transactions 38B:321-331, 2007.
- Hertzberg, R.W., “Deformation and fracture mechanics of engineering materials,” 4th ed., John Wiley & Sons Inc., New Jersey, 1996.
- Dieter, G.E., “Mechanical metallurgy,” 3rd ed., McGraw-Hill, New York, 1986.