TY - JOUR
T1 - Study on joint characteristics in laser butt welding of AMed and wrought Ti6Al4V plates
AU - Okamoto, Yasuhiro
AU - Shinonaga, Togo
AU - Takemoto, Yoshito
AU - Okada, Akira
AU - Ochi, Akihiro
AU - Kishimoto, Ryuya
AU - Pityana, Sisa
AU - Arthur, Nana
AU - Omoniyi, Peter O.
AU - Mahamood, Rasheedat M.
AU - Maina, Martin
AU - Akinlabi, Esther
N1 - Funding information: Open access funding provided by Okayama University. This research was partly supported by the National Research Foundation (NRF) South Africa Grant No. 118893, and Japan Society for the Promotion of Science (JSPS) JSBP 120196504.
PY - 2023/8/1
Y1 - 2023/8/1
N2 - Titanium alloy Ti6Al4V has been widely applied to medical, automotive, and aerospace industries due to its excellent properties such as high strength and excellent corrosion resistance. On the other hand, additive manufacturing (AM) technology can give the freedom of design of the products. In order to spread the AMed products, the joining of AMed and wrought products are required, and it is important to understand the joint characteristics. In this study, butt welding of Ti6Al4V plate was conducted by fiber laser in argon shielding, and the joint characteristics of laser weld wrought/wrought, AMed/AMed, and AMed/wrought Ti6Al4V plates were experimentally investigated. The AMed plate has higher tensile strength than wrought plate but the elongation of AMed plate is smaller, since AMed plate has α’ martensite due to rapid cooling during laser irradiation in AM process. Then, the laser weld joint of AMed/AMed plates has higher tensile strength, but smaller elongation than that of wrought/wrought plates. The weld joint of AMed/wrought plates shows good welding state, since small heat input leads to formation of small weld bead with higher hardness between wrought and AMed plates.
AB - Titanium alloy Ti6Al4V has been widely applied to medical, automotive, and aerospace industries due to its excellent properties such as high strength and excellent corrosion resistance. On the other hand, additive manufacturing (AM) technology can give the freedom of design of the products. In order to spread the AMed products, the joining of AMed and wrought products are required, and it is important to understand the joint characteristics. In this study, butt welding of Ti6Al4V plate was conducted by fiber laser in argon shielding, and the joint characteristics of laser weld wrought/wrought, AMed/AMed, and AMed/wrought Ti6Al4V plates were experimentally investigated. The AMed plate has higher tensile strength than wrought plate but the elongation of AMed plate is smaller, since AMed plate has α’ martensite due to rapid cooling during laser irradiation in AM process. Then, the laser weld joint of AMed/AMed plates has higher tensile strength, but smaller elongation than that of wrought/wrought plates. The weld joint of AMed/wrought plates shows good welding state, since small heat input leads to formation of small weld bead with higher hardness between wrought and AMed plates.
KW - Laser welding
KW - Butt welding
KW - Joint characteristics
KW - Additive manufacturing
KW - Ti6Al4V
UR - http://www.scopus.com/inward/record.url?scp=85161431000&partnerID=8YFLogxK
U2 - 10.1007/s40194-023-01533-3
DO - 10.1007/s40194-023-01533-3
M3 - Article
SN - 0043-2288
VL - 67
SP - 1997
EP - 2005
JO - Welding in the World, Le Soudage Dans Le Monde
JF - Welding in the World, Le Soudage Dans Le Monde
IS - 8
ER -