Open AccessProcess parameters and mechanical properties of SAPH440 steel in pulse arc welding with different heat inputs
Author(s) -
Lei Song,
L. X.,
Xiaogang Gao,
Benda Yan
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/770/1/012104
Subject(s) - welding , materials science , thermocouple , heat affected zone , metallurgy , arc welding , microstructure , arc (geometry) , ultimate tensile strength , pulse (music) , composite material , mechanical engineering , voltage , engineering , physics , quantum mechanics
Thermal cycling parameters of pulse arc welding for SAPH440 steel was experimentally determined for different heat inputs. The welding thermal cycle curves of the weld fusion and heat-affected zones were successfully constructed based on the thermocouple measurements through the back drilling hole. The hardness and tensile strength variations under different heat inputs were also analyzed. This provided a database for the determination and optimization of process parameters, improvement of microstructure and properties of weld fusion and heat affected zones, and overall quality of pulse arc welding of steels.