TY - GEN
T1 - CHARACTERIZING THE EFFECT OF POST WELD HEAT TREATMENT ON THE MECHANICAL PROPERTIES OF LASER BEAM WELDED ADDITIVE MANUFACTURED TI6AL4V
AU - Akinlabi, Esther T.
AU - Omoniyi, Peter
AU - Jen, Tien Chien
AU - Mahamood, Rasheedat M.
AU - Mwema, Frederick
AU - Akinlabi, Stephen A.
AU - Abima, Cynthia S.
N1 - Publisher Copyright:
Copyright © 2023 by ASME.
PY - 2023
Y1 - 2023
N2 - The Ti6Al4V alloys are finding various industrial applications due to their attractive attributes, which can be enhanced via heat-treatment processes. In this study, titanium sheets (Ti6Al4V) were manufactured through laser metal deposition (LMD) using Ti6Al4V powder of particle sizes between 45-90 µm. The build parameters used are optimized at a laser power of 400 W, powder feed rate of 2.4 g/min, hatch spacing of 0.9652 mm, and scanning rotated at 90° between successive layers. The built block is sliced using a wire-electric discharge machine (EDM) into sheets of 2 mm thickness. The resulting blocks were joined using the butt configuration through laser beam welding technology. Post-weld heat treatments were conducted on the welds above the β transus temperature of 995°C. Material characterizations of the evolving properties were conducted using Optical Microscopy, Vickers microhardness, and tensile testing. The investigations show that the heat-treated samples have enhanced properties and can be recommended. The outcome of this research is significant as it gives insight into the optimization of laser welding and post-weld heat treatment parameters of Titanium Alloy Grade 5 for industrial applications.
AB - The Ti6Al4V alloys are finding various industrial applications due to their attractive attributes, which can be enhanced via heat-treatment processes. In this study, titanium sheets (Ti6Al4V) were manufactured through laser metal deposition (LMD) using Ti6Al4V powder of particle sizes between 45-90 µm. The build parameters used are optimized at a laser power of 400 W, powder feed rate of 2.4 g/min, hatch spacing of 0.9652 mm, and scanning rotated at 90° between successive layers. The built block is sliced using a wire-electric discharge machine (EDM) into sheets of 2 mm thickness. The resulting blocks were joined using the butt configuration through laser beam welding technology. Post-weld heat treatments were conducted on the welds above the β transus temperature of 995°C. Material characterizations of the evolving properties were conducted using Optical Microscopy, Vickers microhardness, and tensile testing. The investigations show that the heat-treated samples have enhanced properties and can be recommended. The outcome of this research is significant as it gives insight into the optimization of laser welding and post-weld heat treatment parameters of Titanium Alloy Grade 5 for industrial applications.
KW - Additive Manufacturing
KW - Heat treatment
KW - Laser Metal Deposition
KW - Laser Welding
KW - Microstructure
UR - http://www.scopus.com/inward/record.url?scp=85185395998&partnerID=8YFLogxK
U2 - 10.1115/IMECE2023-115057
DO - 10.1115/IMECE2023-115057
M3 - Conference contribution
AN - SCOPUS:85185395998
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Advanced Materials
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2023 International Mechanical Engineering Congress and Exposition, IMECE 2023
Y2 - 29 October 2023 through 2 November 2023
ER -
