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Study on laser‐tungsten inert gas hybrid welding of dissimilar Mg alloy and steel with Ni as interlayer
Author(s) -
Liu L. M.,
Shan Ch.
Publication year - 2009
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.200900497
Subject(s) - materials science , metallurgy , intermetallic , alloy , inert gas , gas tungsten arc welding , welding , tungsten , foil method , ultimate tensile strength , laser beam welding , composite material , arc welding
Dissimilar Mg alloy and Q235 steel lap joints are produced by Laser‐ tungsten inert gas (TIG) hybrid welding with Ni as an interlayer. Fe and Ni are joined together in the form of solid solution, while Mg alloy and Ni foil are joined together by intermetallic compound Mg 2 Ni. During tensile testing, the joints fail at the interface between Ni foil and Mg alloy. The shear strength of the Mg/Steel joints with Ni as interlayer is 170 MPa, which is higher than that without interlayer 120MPa.