The back reflection induced synergistic laser welding (BRIS-LW) is a newly developing weld technology which could realize X-shape welding joint with relatively low laser energy when compared with general laser welding. The aim of this study is to understand the effect and mechanism of subplate, which is the core part of BRIS-LW. Therefore, 0.8-mm-thin Ti6Al4V plates in a butt configuration were carried out with different subplate status and same laser parameters. Different subplate status includes roughness of subplate surface, subplate material, and distance between subplate and back of welding sheet. The results show that the distance between subplate and back of welding sheet is considered to be the most important factor in BRIS-LW. As the distance increased from 0.1 to 0.5 mm with a step of 0.1 mm, the appearance of welding joint changed from typical X-shape to V-shape. Experimental results indicate that the obtaining of X-shape welding joint with low laser energy threshold in BRIS-LW is due to the formation of a metal-vapor cloud auxiliary energy field at the backside of welding sheet and the auxiliary energy field is induced by the subplate. Meanwhile, the utilization of auxiliary energy field is gradually reduced with the increase of distance. Furthermore, the auxiliary energy field has a synergistic action of thermal effect, force effect, protective effect, and metal evaporation effect on the back of welding zone.
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Manonmani K, Murugan N, Buvanasekaran G (2007) Effects of process parameters on the bead geometry of laser beam butt welded stainless steel sheets. Int J Adv Manuf Technol 32:1125–1133
Zeng Z, Li XB, Peng B, Li M, Zhou ZM, Tang ML (2015) Comparative study of 5A06 aluminum alloy welded joints obtained by different laser–tungsten inert gas hybrid welding. Trans Indian Inst Metals 68:341–351
Gou NN, Zhang JX, Zhang LJ, Li ZG, Bi ZY (2016) Single pass fiber laser butt welding of explosively welded 2205/X65 bimetallic sheets and study on the properties of the welded joint. Int J Adv Manuf Technol 86:1–11
Chen HC, Pinkerton AJ, Li L (2011) Fibre laser welding of dissimilar alloys of Ti-6Al-4V and Inconel 718 for aerospace applications. Int J Adv Manuf Technol 52:977–987
Quan YJ, Chen ZH, Gong XS (2008) Effects of heat input on microstructure and tensile properties of laser welded magnesium alloy AZ31. Mater Charact 59:1491–1497
Chen YB, Chen SH, Li L (2009) Effects of heat input on microstructure and mechanical property of Al/Ti joints by rectangular spot laser welding-brazing method. Int J Adv Manuf Technol 44:265–272
Shcheglov PY, Uspenskiy SA, Gumenyuk AV (2011) Plume attenuation of laser radiation during high power fiber laser welding. Laser Phys Lett 8:475–480
Zhang YL, Lu FG, Cui HC, Cai Y, Guo ST, Tang XH (2016) Investigation on the effects of parameters on hot cracking and tensile shear strength of overlap joint in laser welding dissimilar Al alloys. Int J Adv Manuf Technol 86:1–10
Kaul R, Ganesh P, Singh N (2007) Effect of active flux addition on laser welding of austenitic stainless steel. Sci Technol Weld Join 12:127–137
Mei L, Wang Z, Yan D, Chen S, Xie (2017) Effect of activating flux on laser penetration welding performance of galvanized steel. Int J Adv Manuf Technol 91:1069–1078
Tse HC, Man HC, Yue TM (1999) Effect of electric and magnetic fields on plasma control during CO2 laser welding. Opt Laser Eng 32:55–63
Tse HC, Man HC, Yue TM (1999) Effect of magnetic field on plasma control during CO2 laser welding. Opt Laser Eng 31:363–368
Kawamura E, Ingold JH (2001) Controlling the plasma of deep penetration laser welding to increase power efficiency. J Phys D Appl Phys 34:3145
Zhou Q, Zhang F, Huang X (2017) Aggregate multiple radial basis function models for identifying promising process parameters in magnetic field assisted laser welding. J Manuf Process 28:21–32
Wang HY, Cheng M., Zhou JZ, Huang S, Li XF, Jin J, Sun CC, Chao S, Wu TC, She J (2014) Chin Pat. CN103978309A[P]
Cheng M, Wang HY, Zhou JZ, Li XF, Huang S (2016) Process optimization of laser reflection-induced superimposition deep-penetration welding for titanium alloy sheet. J Trans China Weld Ins 37:9–12
Chao S (2016) Research on formability microstructures and properties of titanium alloy sheet by back-reflection induced synergy laser welding. Dissertation, Jiangsu University
Gan Z, Liu H, Li S, He X, Yu G (2017) Modeling of thermal behavior and mass transport in multi-layer laser additive manufacturing of Ni-based alloy on cast iron. Int J Heat Mass Trans 111:709–722
Zhang L, Gao X, Sun M, Zhang J (2014) Weld outline comparison between various pulsed Nd:YAG laser welding and pulsed Nd:YAG laser–TIG arc welding. Int J Adv Manuf Technol 75:153–160
Elmesalamy AS, Li L, Francis JA, Sezer HK (2013) Understanding the process parameter interactions in multiple-pass ultra-narrow-gap laser welding of thick-section stainless steels. Int J Adv Manuf Technol 68:1–17
Zhang XY, Zhao YQ, Bai CG (2005) Titanium Alloys and Applications. Beijing, China
Chen K, Wang Z, Xiao R, Zuo T (2006) Mechanism of laser welding on dissimilar metals between stainless steel and W-Cu alloy. Chin Opt Lett 4:294–296
Seifert F, Schubert M (2010) Modification of Fresnel’s reflectivity formula in the case of time-dependent optical parameters. Ann Phys-Berlin 498:595–601
Dai J, Wang X, Li Y, Huang J, Zhang Y, Chen J (2014) Study of plasma in laser welding of magnesium alloy. Int J Adv Manuf Technol 73:443–447
Gao M, Chen C, Hu M (2015) Characteristics of plasma plume in fiber laser welding of aluminum alloy. Appl Surf Sci 326:181–186
Chen Y, Li L, Peng X, Fang J, Zhang Y (2005) Joint performance in laser welding Al alloy with filler wire. Trans Nonferr Metal Soc 15:87–91
Gao X, Zhang L, Liu J, Zhang J (2014) Effects of weld cross-section profiles and microstructure on properties of pulsed Nd:YAG laser welding of Ti6Al4V sheet. Int J Adv Manuf Technol 72:895–903
Kawahito Y, Matsumoto N, Mizutani M (2008) Characterisation of plasma induced during high power fibre laser welding of stainless steel. Sci Technol Weld Join 13:744–748
Casalino G, Mortello M (2016) A FEM model to study the fiber laser welding of Ti6Al4V thin sheets. Int J Adv Manuf Technol 86:1339–1346
Gan Z, Yu G, He X, Li S (2017) Surface-active element transport and its effect on liquid metal flow in laser-assisted additive manufacturing. Int Commun Heat Mass 86:206–214
This work is supported by the National Natural Science Foundation of China [Grant No. 51372216] and the Key Laboratory of Precision and Micro Manufacturing of Jiangsu Province [Grant No. KFA11250-04].
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Wang, H., Li, L., Zhang, X. et al. Effect of subplate on sheet metal weld formation in back reflection induced synergistic laser welding and its mechanism. Int J Adv Manuf Technol 98, 2639–2651 (2018). https://doi.org/10.1007/s00170-018-2193-5
- Laser welding
- X-shape weld formation
- Low energy threshold
- Metal subplate
- Metal-vapor cloud