NUMERICAL APPROACH TO STEADY STATE TEMPERATURE DISTRIBUTION IN PULSED ND: YAG LASER WELDING OF HASTELLOY C-276
Keywords:
Pulsed laser welding, Hastelloy C-276, SYSWELD 16, aspect ratio, Temperature distributionAbstract
The influence of heat source in Nd: YAG laser welding of Hastelloy C-276, subjected to varying welding speeds (350 mm/min-450 mm/min), is presented in this study. The temperature distribution across various regions viz., base alloy, heat affected zone (HAZ) and fusion zone are determined by SYSWELD 16 - a 3D finite element software package. Numerical simulation for the attempted welding speeds shows complete penetration, though the morphology of the weld differs. The maximum temperature was obtained in the fusion zone in the attempted welding speeds. The aspect ratio (depth/width) of the weld pool increases with welding speed.
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References
We D J Ma G Y Niu F Y and Guo D M (2013), “Pulsed laser welding of Hastealloy C-276: High temperature mechanical properties and microstructure”, Materials and Manufacturing Processes, Vol. 28 (5), 524-28.
Ion, J. (2005), “Laser Processing of Engineering Materials: Principles, Procedure and Industrial Application”, Butterworth-Heinemann.
Lindgren L E (2001), “Finite element modeling and simulation of welding, Part 3: efficiency and integration”, Journal of thermal stresses, Vol.24 (4), 305-34.
Mazumder J and Steen W M (1980), “Heat transfer model for CW laser material processing”, Journal of Applied Physics, Vol.51 (2), 941-47.
Kazemi K and Goldak J A (2009), “Numerical simulation of laser full penetration welding”, Computational Materials Science, Vol.44 (3), 841-849.
Balasubramanian K R Siva Shanmugam N Buvanashekaran G and Sankaranarayanasamy K (2008), “Numerical and experimental investigation of laser beam welding of AISI 304 stainless steel sheet”, Advances in Production engineering & Management, Vol.3(2), 93-105.
Azizpour M Ghoreishi M and Khorram A (2015), “Numerical Simulation of Laser Beam Welding of Ti6Al4V Sheet”, J. Comput. Appl. Res. Mech. Eng. (JCARME), Vol.4 (2), 145-54.
Shanmugam N S Buvanashekaran G Sankaranarayanasamy K and Kumar S R (2010), “A transient finite element simulation of the temperature and bead profiles of T-joint laser welds”, Materials & design, Vol.31 (9), 4528-42.
Bradac J (2013), “Calibration of heat source model in numerical simulations of fusion welding”, Machines, Technologies, Materials, Vol.11, 9-12.
Sathiya P and Jaleel M Y (2010). “Grey-based taguchi method for optimization of bead geometry in laser bead-on-platewelding”, Advances in Production Engineering and Management, Vol.5 (4), 225-234.
Shanthoskumar G Sivagurumanikandan N Saravanan S and Raghukandan K (2010), “Effect of welding speed on microstructural and mechanical properties of pulsed Nd: YAG laser welded dissimilar metals”, Journal of Manufacturing Engineering, Vol. 11(3), 161-65.
Saravanan S Raghukandan K Sivagurumanikandan N (2016), “Studies on metallurgical and mechanical properties of laser welded dissimilar grade steels”, Journal of the Brazilian Society of Mechanical Sciences and Engineering DOI: 10.1007/s40430-016-0658-8.
Torkamany M J Ghaini F M Poursalehi R and Kaplan A F H (2016), “Combination of laser keyhole and conduction welding: Dissimilar laser welding of niobium and Ti-6Al-4V”, Optics and Lasers in Engineering, Vol.79, 9-15.
Saravanan S Raghukandan K Sivagurumanikandan N (2017), “Pulsed Nd: YAG laser welding and subsequent post-weld heat treatment on super duplex stainless steel”, Journal of Manufacturing Processes. Vol. 25 284-289.
