Revista de Metalurgia, Vol 54, No 1 (2018)

Consideración sobre la soldadura de transferencia de metal frio de AA5754 al acero galvanizado a partir de aspectos mecánicos y microestructurales


https://doi.org/10.3989/revmetalm.115

Nilay Çömez
Manisa Celal Bayar University, Turquía
orcid http://orcid.org/0000-0002-6432-6582

Hülya Durmuş
Manisa Celal Bayar University, Turquía
orcid http://orcid.org/0000-0002-7270-562X

Resumen


En este estudio, la soldadura por solapamiento de AA5754 y chapas de acero galvanizado se llevó a cabo mediante el método de transferencia de metal en frío (CMT) utilizando un hilo de relleno ER4043 (AlSi5). Se investigó el efecto del aporte de calor sobre la formación de la capa de compuesto intermetálico (IMC) entre el acero y el aluminio. Las propiedades mecánicas de las juntas se determinaron mediante ensayos de tracción y dureza y también aplicando la prueba de nano indentación a la capa intermetálica. Las composiciones químicas de IMC se analizaron mediante EDX y se detectó la formación de fases Al7.2Fe1.8Si y Fe2Al5. La formación de la fase Fe2Al5 fue perjudicial para la fiabilidad de la articulación, aunque su resistencia mecánica es superior.

Palabras clave


Acero; Aluminio; Intermetálico; Soldadura

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