[1] Lei Z L, Chen Y B, Song G X et al. Weld appearance of CO2 laser-gas metal arc hybrid welding for ultra-low carbon bainitic steel[J]. Chinese Journal of Lasers, 36, 3068-3073(2009).

[2] Wang Y. Research status and developments on weld procedure of low-alloy Q+A high strength steel[J]. Applied Energy Technology, 11-13(2009).

[3] Guan Y P, Li Y J, Wang J. Present situation of the study on the weldability of 1000 MPa and above high strength low alloy steel[J]. Welding Digest of Machinery Manufacturing, 30-34(2015).

[4] Gu S Y, Liu Z J, Zhang P L et al. Appearances and formation mechanism of welds in high-strength steels by high speed laser-arc hybrid welding[J]. Chinese Journal of Lasers, 45, 1202007(2018).

[5] Yang Z, Zhang P, Cai Z H et al. Research on mechanical properties of high-strength steel laser-arc hybrid welded joints[J]. Acta Armamentarii, 38, 549-554(2017).

[6] Teng B, Lei Z, Wang X Y et al. Mechanical properties of JFE980S high strength steel joint welded by lase + MAG arc hybrid welding[J]. Welding & Joining, 42-46, 71(2010).

[7] Gao M, Zeng X Y, Hu Q W et al. Mechanism and remedy of undercut formation during laser-arc hybrid welding[J]. Transactions of the China Welding Institution, 29, 85-88, 117(2008).

[8] Wang Z M, Wang J, Tang B et al. Effect of welding processing parameters on porosity formation and prevention mechanism analysis of zircaloy sheet by YAG laser welding[J]. Rare Metal Materials and Engineering, 43, 2782-2786(2014).

[9] Sun Z. Effect of fusion ratio on welding microstructure and properties of 0Cr18Ni9 and Q345D dissimilar steels[J]. Tianjin Science & Technology, 39, 140-142(2012).

[10] Zheng Y W, Cai Z P, He Y C et al. Study on the influence of fusion ratio on carbon migration phenomenon in the narrow gap welding of dissimilar steels[J]. Journal of Mechanical Engineering, 52, 74-80(2016).

[11] Zheng S Q, Wen P, Shan J G. Experimental analysis on fusion ratio and composition uniformity of laser hot wire welds[J]. Transactions of the China Welding Institution, 33, 45-48,72,115(2012).

[12] Li B, Zhu Y H, Deng L et al. Research on the microstructure and properties of high-speed laser-arc hybrid welding of BS960E high strength alloy steel[J]. Electric Welding Machine, 50, 72-76,136-137(2020).

[13] Li X J, Huang J, Pan H et al. Microstructure and formability of laser welding joint of QP1180 high-strength steel sheet[J]. Chinese Journal of Lasers, 46, 0302006(2019).

[14] Jing Z C, Zhang G Y, Wang Z J et al. Properties of marine high-strength steel by high-efficiency laser-MAG hybrid welding[J]. Chinese Journal of Lasers, 46, 0802005(2019).

[15] Ma S H, Zou Y M, Li Z Q et al. Effects of root gap on microstructure and properties for welded joints of high strength steel[J]. Welding Technology, 47, 123-125(2018).

[16] Yang Z H, Yang S L, Tuo W H et al. Effects of welding speed on microstructure and mechanical properties of laser welded joint of TRIP590 high strength steel[J]. Materials for Mechanical Engineering, 41, 94-97, 102(2017).

[17] Wu C Z, Chen H N, Fan M N et al. Microstructure and toughness of HAZ in 1000 MPa grade high strength steel joint[J]. Transactions of the China Welding Institution, 32, 97-100, 118(2011).

[18] Yao B, Li Y Q, Zhang H S et al. Toughness of heat affected zone in high strength steels with laser-arc hybrid welding[J]. Applied Laser, 36, 683-689(2016).

[19] Li X B, Lu F G, Cui H C et al. Numerical modeling on the formation process of keyhole-induced porosity for laser welding steel with T-joint[J]. The International Journal of Advanced Manufacturing Technology, 72, 241-254(2014). http://link.springer.com/article/10.1007/s00170-014-5609-x

[20] He S, Chen H, Chen Y et al. Effects of laser power on droplet transfer behaviour in laser-MAG hybrid welding[J]. Laser & Optoelectronics Progress, 55, 021408(2018).

[21] Shi P F, Huang J, Tantai F L et al. Microstructures and properties of 27SiMn high-strength steel joints by laser-MAG hybrid welding[J]. Chinese Journal of Lasers, 44, 1002001(2017).