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A new approach to improve the ductility of non-penetrating laser-welded lap joints of cold-rolled 301LN stainless steel

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Abstract

The aim of this work is to improve the fracture ductility of non-penetrating laser-welded lap joints. The 1.5 + 2.0 and 2.0 + 2.0 lap plates of cold-rolled 301LN stainless steel tilted 15° in the load direction and in the reverse load direction were welded by a vertical laser beam to prepare a positive-tilt weld (PTW) and negative-tilt weld (NTW). The tilt weld had a regular geometry, and the solidification centerline was tilted by approximately 15°. The laser-welded 301LN stainless steel was solidified by the primary ferritic mode with good resistance to thermal cracking, and the weld metal with ultrafine grains had excellent plasticity. The main weld in the penetrating plate of the NTW joints has a greater bending moment than that of PTW joints under tensile loading conditions, so the plastic deformation of the NTW is due to uniform bending, while that of the PTW is due to approximate parallel stretching. The bending deformation of the main weld of the NTW joint leads to a greater tensile stress ratio (decomposed normal stress to shear stress) in the interfacial weld metal than that of the PTW joint, so the interfacial fracture ductility of NTW joints is much greater than that of PTW joints.

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References

  1. Jaxa-Rozen W (2014) Cold-worked austenitic stainless steels in passenger railcars and in other applications. Thin-Walled Struct 83:190–199. https://doi.org/10.1016/j.tws.2014.01.027

    Article  Google Scholar 

  2. Cerrone C, Chiti F, Sacchi M, Fersini M, Pietrosanti C (2008) Application of laser welding to stainless steel light rail vehicle. Weld World 52(7):27–32. https://doi.org/10.1007/bf03266649

    Article  CAS  Google Scholar 

  3. Liu W, Fan HL, Guo XZ, Huang ZH, Han XH (2016) Mechanical properties of resistance spot welded components of high strength austenitic stainless steel. J Mater Sci Technol 32(6):561–565. https://doi.org/10.1016/j.jmst.2015.11.023

    Article  CAS  Google Scholar 

  4. Liu W, Wang RJ, Han JL, Xu XY, Li Q (2010) Microstructure and mechanical performance of resistance spot-welded cold-rolled high strength austenitic stainless steel. J Mater Process Technol 210(14):1956–1961. https://doi.org/10.1016/j.jmatprotec.2010.07.008

    Article  CAS  Google Scholar 

  5. Guo XZ, Liu W, Wang CK, Liu HY, Fan JF (2018) Numerical analysis of elastic-plastic deformation evolution and fracture behavior in tensile process of laser lap welded 301L joints. Chin J Lasers 45(12):1202003. https://doi.org/10.3788/CJL201845.1202003

    Article  Google Scholar 

  6. Gu C, Wei Y, Zhan X, Zhang D, Ren S, Liu H, Li H (2017) Investigation of welding parameters on microstructure and mechanical properties of laser beam-welded joint of 2060 Al-Cu-Li alloy. Int J Adv Manuf Technol 91(1–4):771–780. https://doi.org/10.1007/s00170-016-9806-7

    Article  Google Scholar 

  7. Inamke GV, Pellone L, Ning J, Shin YC (2019) Enhancement of weld strength of laser-welded joints of AA6061-T6 and TZM alloys via novel dual-laser warm laser shock peening. Int J Adv Manuf Technol 104(1–4):907–919. https://doi.org/10.1007/s00170-019-03868-y

    Article  Google Scholar 

  8. Braga V, Siqueira RHM, Carvalho SM, Mansur RAF, Chen D, Lima MSF (2019) Mechanical behavior and microstructure of a fiber laser-welded TWIP steel. Int J Adv Manuf Technol 104(1–4):1245–1250. https://doi.org/10.1007/s00170-019-04069-3

    Article  Google Scholar 

  9. Katayama S, Kawahito Y, Mizutan M (2010) Elucidation of laser welding phenomena and factors affecting weld penetration and welding defects. Phys Procedia 5:9–17. https://doi.org/10.1016/j.phpro.2010.08.024

    Article  CAS  Google Scholar 

  10. Xu H, Guo X, Lei Y, Lin J, Fu H, Xiao R, Huang T, Shin YC (2019) Welding deformation of ultra-thin 316 stainless steel plate using pulsed laser welding process. Opt Laser Technol 119:105583. https://doi.org/10.1016/j.optlastec.2019.105583

    Article  CAS  Google Scholar 

  11. Sumi H, Oi K, Yasuda K (2015) Effect of chemical composition on microstructure and mechanical properties of laser weld metal of high-tensile-strength steel. Weld World 59(2):173–178. https://doi.org/10.1007/s40194-014-0191-2

    Article  CAS  Google Scholar 

  12. Ai Y, Jiang P, Wang C, Mi G, Geng S (2018) Experimental and numerical analysis of molten pool and keyhole profile during high-power deep-penetration laser welding. Int J Heat Mass Transf 126:779–789. https://doi.org/10.1016/j.ijheatmasstransfer.2018.05.031

    Article  Google Scholar 

  13. Quiroz V, Gumenyuk A, Rethmeier M (2012) Laser beam weldability of high-manganese austenitic and duplex stainless steel sheets. Weld World 56:9–20. https://doi.org/10.1007/BF03321140

    Article  CAS  Google Scholar 

  14. Ayoola WA, Suder WJ, Williams SW (2019) Effect of beam shape and spatial energy distribution on weld bead geometry in conduction welding. Opt Laser Technol 117:280–287. https://doi.org/10.1016/j.optlastec.2019.04.025

    Article  CAS  Google Scholar 

  15. Liu L, Shi J, Hou Z, Song G (2018) Effect of distance between the heat sources on the molten pool stability and burn-through during the pulse laser-GTA hybrid welding process. J Manuf Process 34:697–705. https://doi.org/10.1016/j.jmapro.2018.06.038

    Article  CAS  Google Scholar 

  16. Sohail M, Han S, Na S, Gumenyuk A, Rethmeier M (2014) Characteristics of weld pool behavior in laser welding with various power inputs. Weld World 58:269–277. https://doi.org/10.1007/s40194-014-0112-4

    Article  Google Scholar 

  17. Kumar N, Mukherjee M, Bandyopadhyay A (2017) Study on laser welding of austenitic stainless steel by varying incident angle of pulsed laser beam. Opt Laser Technol 94:296–309. https://doi.org/10.1016/j.optlastec.2017.04.008

    Article  CAS  Google Scholar 

  18. Chen G, Mei L, Zhang M, Zhang Y, Wang Z (2013) Research on key influence factors of laser overlap welding of automobile body galvanized steel. Opt Laser Technol 45:726–733. https://doi.org/10.1016/j.optlastec.2012.05.002

    Article  Google Scholar 

  19. Ning J, Hong KM, Inamke GV, Shin YC, Zhang LJ (2019) Analysis of microstructure and mechanical strength of lap joints of TZM alloy welded by a fiber laser. J Manuf Process 39:146–159. https://doi.org/10.1016/j.jmapro.2019.02.015

    Article  Google Scholar 

  20. Ma J, Kong F, Liu W, Carlson B, Kovacevic R (2014) Study on the strength and failure modes of laser welded galvanized DP980 steel lap joints. J Mater Process Technol 214(8):1696–1709. https://doi.org/10.1016/j.jmatprotec.2014.03.018

    Article  CAS  Google Scholar 

  21. Zhao YY, Zhang YS, Hu W (2013) Effect of welding speed on microstructure, hardness and tensile properties in laser welding of advanced high strength steel. Sci Technol Weld Join 18(7):581–590. https://doi.org/10.1179/1362171813Y.0000000140

    Article  CAS  Google Scholar 

  22. Lippold JC (1994) Solidification behavior and cracking susceptibility of pulsed-laser welds in austenitic stainless steels. Weld J 73(6):S129–S139

    Google Scholar 

  23. Lu Y, Sun G, Wang Z, Zhang Y, Su B, Feng A (2019) Effects of electromagnetic field on the laser direct metal deposition of austenitic stainless steel. Opt Laser Technol 119:105586. https://doi.org/10.1016/j.optlastec.2019.105586

    Article  CAS  Google Scholar 

  24. Molian PA (1985) Solidification behavior of laser welded stainless steel. J Mater Sci Lett 4(3):281–283. https://doi.org/10.1007/BF00719791

    Article  CAS  Google Scholar 

  25. Yu J, Rombouts M, Maes G (2013) Cracking behavior and mechanical properties of austenitic stainless steel parts produced by laser metal deposition. Mater Des 45(6):228–235. https://doi.org/10.1016/j.matdes.2012.08.078

    Article  CAS  Google Scholar 

  26. Simmons JW (1996) Overview: high-nitrogen alloying of stainless steels. Mater Sci Eng A 207(2):159–169. https://doi.org/10.1016/0921-5093(95)09991-3

    Article  Google Scholar 

  27. Liu W, Li ZB, Wang X, Zou H, Wang LX (2009) Effect of strain rate on strain induced martensite transformation and mechanical response of austenitic stainless steels. Acta Metall Sin 45(3):285–291

    CAS  Google Scholar 

  28. Ha J, Huh H (2013) Failure characterization of laser welds under combined loading conditions. Int J Mech Sci 69:40–58. https://doi.org/10.1016/j.ijmecsci.2013.01.022

    Article  Google Scholar 

  29. Kavamura HA, Batalha GF (2008) Mechanical strength evaluation for Nd-YAG laser and electric resistance spot weld (ERSW) joint under multiaxial loading. J Mater Process Technol 201(1–3):507–514. https://doi.org/10.1016/j.jmatprotec.2007.11.172

    Article  CAS  Google Scholar 

  30. Liu C, Zheng X, He H, Wang W, Wei X (2016) Effect of work hardening on mechanical behavior of resistance spot welding joint during tension shear test. Mater Des 100:188–197. https://doi.org/10.1016/j.matdes.2016.03.120

    Article  CAS  Google Scholar 

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Funding

This work was funded by the scientific research and development projects of China Railways Corporation (2017J011-C).

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Authors and Affiliations

  1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, 100044, China

    Xiangzhong Guo, Wei Liu, Xiqing Li, Jiafei Fan & Zhikun Song

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  1. Xiangzhong Guo
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  2. Wei Liu
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  3. Xiqing Li
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  5. Zhikun Song
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Correspondence to Wei Liu.

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Recommended for publication by Commission XV - Design, Analysis, and Fabrication of Welded Structures

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Guo, X., Liu, W., Li, X. et al. A new approach to improve the ductility of non-penetrating laser-welded lap joints of cold-rolled 301LN stainless steel. Weld World 65, 87–93 (2021). https://doi.org/10.1007/s40194-020-00999-9

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  • DOI: https://doi.org/10.1007/s40194-020-00999-9

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