Abstract
Magnesium-rare earth alloy was welded using the CO2 laser. The surface plasma of laser welding was studied by the spectra and also, the plasma temperature was calculated using the relative intensity of spectral line. The behavior of the plasma was observed with a high-speed camera. The relationship between the welding parameters and plasma temperature was discussed. The results show that laser power has little effect on plasma temperature. With increasing welding speed, plasma temperature decreases first, and then, increases. The cooling effect of the plasma using helium is significant. The plasma recoil is about 7,500 Pa during laser-welded NZ30K because of the lower boiling point of magnesium.
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References
Rao J, Li H (2010) Oxidation and ignition behavior of a magnesium alloy containing rare earth elements. Int J Adv Manuf Technol 51:225–231
Mz L, Yq W, Li C, Xg L, Bs X (2011) Effects of neodymium rich rare earth elements on microstructure and mechanical properties of as cast AZ31 magnesium alloy. Mater Sci Technol 27:1138–1142
Yang MB, Pan FS, Shen J, Ma YL (2012) Effects of minor additions of Ce and Y on as cast microstructure of Mg‐3Sn‐2Ca magnesium alloy. Mater Sci Technol 28:509–512
Meng W, Li Z, Huang J (2013) Effect of gap on plasma and molten pool dynamics during laser lap welding for T-joints. Int J Adv Manuf Technol 69:1105–1112
Yu H, Ye Z, Chen S (2013) Application of arc plasma spectral information in the monitor of Al–Mg alloy pulsed GTAW penetration status based on fuzzy logic system. Int J Adv Manuf Technol 68:2713–2727
Schlenvoigt HP, Haupt K, Debus A, Budde F, Jäckel O, Pfotenhauer S, Schwoerer H, Rohwer E, Gallacher JG, Brunetti E (2007) A compact synchrotron radiation source driven by a laser-plasma Wakefield accelerator. Nat Phys 4:130–133
Tu J, Miyamoto I, Inoue T (2002) Characterizing keyhole plasma light emission and plasma plume scattering for monitoring 20 kW class CO2 laser welding processes. J Laser Appl 14:146–150
Lacroix D, Jeandel G, Boudot C (1997) Spectroscopic characterization of laser-induced plasma created during welding with a pulsed Nd: YAG laser. J Appl Phys 81:6599–6604
Hanif M, Salik M, Ma B (2011) Spectroscopic studies of the laser produced lead plasma. Plasma Sci Technol 13:129–135
Jinwei C, Liming P, Xiaowei G, Atrens A, Penghuai F, Wenjiang D, Xusong W (2008) Comparison of the corrosion behaviour in 5% NaCl solution of Mg alloys NZ30K and AZ91D. J Appl Electrochem 38:207–212
Penghuai F, Liming P, Huyuan J, Chunquan Z (2008) Effects of heat treatments on the microstructures and mechanical properties of Mg-3Nd-0.2 Zn-0.4 Zr (wt.%) alloy. Mater Sci Eng A 486:572–579
Zheng X, Dong J, Xiang Y, Chang J, Wang F, Jin L, Wang Y, Wenjiang D (2010) Formability, mechanical and corrosive properties of Mg-Nd-Zn-Zr magnesium alloy seamless tubes. Mater Des 31:1417–1421
Anquan D, Chen L, Guo L (2009) Characteristics of vapor/plasmas during YAG laser welding of 5A90 AI-Li Alloy. Rare Metal Mater Eng 38:160–165
Fabbro R, Slimani S, Doudet I, Coste F, Briand F (2006) Experimental study of the dynamical coupling between the induced vapour plume and the melt pool for Nd–Yag CW laser welding. J Phys D Appl Phys 39:394–398
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Dai, J., Wang, X., Yang, L. et al. Study of plasma in laser welding of magnesium alloy. Int J Adv Manuf Technol 73, 443–447 (2014). https://doi.org/10.1007/s00170-014-5809-4
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DOI: https://doi.org/10.1007/s00170-014-5809-4