Dissimilar Metals LaserWelding between DP1000 Steel and Aluminum Alloy 1050
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Data
2019
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MDPI
Resumo
The welding of dissimilar metals was carried out using a pulsed Nd: YAG laser to join
DP1000 steel and an aluminum alloy 1050 H111. Two sheets of each metal, with 30 14 1 mm3,
were lap welded, since butt welding proved to be nearly impossible due to the huge thermal
conductivity differences and melting temperature differences of these materials. The aim of this
research was to find the optimal laser welding parameters based on the mechanical and microstructure
investigations. Thus, the welded samples were then subjected to tensile testing to evaluate the quality
of the joining operation. The best set of welding parameters was replicated, and the welding joint
obtained using these proper parameters was carefully analyzed using optical and scanning electron
microscopes. Despite the predicted difficulties of welding two distinct metals, good quality welded
joints were achieved. Additionally, some samples performed satisfactorily well in the mechanical
tests, reaching tensile strengths close to the original 1050 aluminum alloy.
Descrição
Metals
Palavras-chave
STEEL, ALUMINUM, ELECTROTECHNICAL ENGINEERING, MECHANIC ENGINEERING, WELDING, LASER, WELDING PROCESSES, ALUMINUM ALLOY, LASER, ENGENHARIA ELETROTÉCNICA, ENGENHARIA MECÂNICA, SOLDADURA, AÇO, ALUMÍNIO, PROCESSOS DE SOLDADURA, LIGAS DE ALUMÍNIO