Premium
Metallurgical and Mechanical Characterization of Laser Spot Welded Low Carbon Steel Sheets
Author(s) -
Masoumi M.,
Marashi S.P.H.,
Pouranvari M.
Publication year - 2010
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201000064
Subject(s) - materials science , spot welding , welding , laser , carbon steel , indentation hardness , laser beam welding , ultimate tensile strength , metallurgy , composite material , microstructure , optics , corrosion , physics
This paper aims at investigating metallurgical and mechanical characterization of low carbon steel laser spot welds. Microstructural examinations, microhardness tests and quasi‐static tensile‐shear tests were preformed. Mechanical properties of the welds were described in terms of peak load and failure mode. The effects of laser spot welding parameters including pulse frequency, laser energy, welding speed, pulse width and welded circle diameter, on low carbon steel laser spot weld performance were studied using the Taguchi design of experiment method. It was found that the effective laser pulse energy is the controlling factor in the determination of mechanical strength of laser spot welds.