Microstructure and mechanical properties of fiber laser welding of 950 MPa grade twinning-induced plasticity steel for automotive industry

Nayak S S, Baltazar Hernandez VH, Okita Y,et al. Microstructure-hardness relationship in the fusion zone of TRIP steel welds[J]. Materials Science and Engineering A, 2012, 551: 73-81.[2] Yang H K, Zhang Z J, Dong F Y,et al. Strain rate effects on tensile deformation behaviors for Fe-22Mn-0.6C-(1.5Al) twinning-induced plasticity steel[J]. Materials Science and Engineering A, 2014, 607: 551-558.[3] 董丹阳, 王观军, 马 敏, 等. 车用双相钢激光焊接接头组织性能研究[J]. 中国激光, 2012, 39(9): 09030021-09030026.Dong Danyang, Wang Guangjun, Ma Min,et al. Study on microstructure and properties of laser welding dual phase steel joints for an auto-body[J]. Chinese Journal of Lasers, 2012, 39(9): 09030021-09030026.[4] Huh H, Kim S B, Song J H,et al. Dynamic tensile characteristics of TRIP-type and DP-type steel sheets for an auto-body[J]. International Journal of Mechanical Sciences, 2008, 50: 918-931.[5] 米振莉, 杨 林, 李志超, 等. 不同焊接方法对TWIP钢焊后热影响区组织和性能的影响[J]. 焊接学报, 2013, 34(5): 9-12.Mi Zhenli, Yang Lin, Li Zhichao,et al. Study on heat-affected zone of TWIP steel after welding[J]. Transactions of the China Welding Institution, 2013, 34(5): 9-12.[6] Ma L L, Wei Y H, Hou L F,et al. Evaluation on fatigue performance and fracture mechanism of laser welded TWIP steel joint based on evolution of microstructure and micromechanical properties[J]. Journal of Iron and Steel Research, International, 2016, 23(7): 677-684.[7] Nguyen N T, Hariharan K, Barlat F,et al. Design of high strength differential TWB to enhance drawability: FE study and optimization[J]. International Journal of Percision Engineering and Manufacturing, 2014, 15(11): 2273-2283.[8] Wang T, Zhang M, Xiong W,et al. Microstructure and tensile properties of the laser welded TWIP steel and the deformation behavior of the fusion zone[J]. Materials and Design, 2015, 83: 103-111.[9] Liang Z Y, Huang W, Huang M X. Suppression of dislocations at high strain rate deformation in a twinning-induced plasticity steel[J]. Materials Science and Engineering A, 2015, 628: 84-88.[10] Liang Z Y, Wang X, Huang W,et al. Strain rate sensitivity and evolution of dislocations and twins in a twinning-induced plasticity steel[J]. Acta Materialia, 2015, 88: 170-179.[11] Roncery L M, Weber S, Theisen W. Welding of twinning-induced plasticity steels[J]. Scripta Materialia, 2012, 66: 997-1001.[12] Rossini M, Spena P R, Cortese L,et al. Investigation on dissimilar laser welding of advanced high strength steel sheets for the automotive industry[J]. Materials Science and Engineering A, 2015, 628: 288-296.[13] Xu S Q, Ruan D, Beynon J H,et al. Dynamic tensile behavior of TWIP steel under intermediate strain rate loading[J]. Materials Science and Engineering A, 2013, 573: 132-140.