Comportamiento macromecánico de uniones soldadas de superficie (AA5083) utilizando soldadura con gas inerte de tungsteno con recocido de homogeneización en una sola etapa

Muhammad Muzamil; Jianjun Wu; Muhammad Samiuddin; Arfan Majeed; Sumair Uddin Siddiqui; Muhammad Mudassir

doi:10.3989/revmetalm.173

Autores/as

Muhammad Muzamil Mechanical Engineering Department, NED University of Engineering and Technology https://orcid.org/0000-0001-8380-0502
Jianjun Wu School of Mechanical Engineering, Northwestern Polytechnical University https://orcid.org/0000-0001-6953-5511
Muhammad Samiuddin Metallurgical Engineering Department, NED University of Engineering and Technology - State Key Laboratory of Solidification Processing, Northwestern Polytechnical University https://orcid.org/0000-0002-2350-6114
Arfan Majeed School of Mechanical Engineering, Northwestern Polytechnical University https://orcid.org/0000-0002-6835-7706
Sumair Uddin Siddiqui State Key Laboratory of Solidification Processing, Northwestern Polytechnical University https://orcid.org/0000-0002-9304-0700
Muhammad Mudassir Department of Chemistry, NED University of Engineering and Technology, Karachi https://orcid.org/0000-0003-3108-5740

DOI:

https://doi.org/10.3989/revmetalm.173

Palabras clave:

Aleaciones AA5083, Comportamiento mecánico, Homogeneización, Soldadura de superficie, Soldadura con gas inerte de tungsteno

Resumen

Las uniones soldadas de superficie se consideran una estrategia avanzada e innovadora para lograr una resistencia aceptable sin consumir excesiva energía en la preparación de las muestras. Se soldaron dos superficies planas de la aleación AA5083 desde cuatro lados y utilizando el mismo material de relleno. En el análisis de la soldadura de superficie, se logró una profundidad de fusión de hasta 2 - 2,2 mm en cada lado, aunque la parte central permaneció sin fusionar. Después de la unión, se realizó un recocido de homogeneización a 275 y 325 °C durante 3 h, lo que aumentó el rendimiento de la unión hasta un 57,6%. Las micrografías ópticas de las zonas fusionadas han permitido la visibilidad de combinación alternativa de Al₆(Mn, Fe) y Mg₂Si con el aumento de la temperatura de recocido de 275 a 325 °C. Las observaciones de la superficie de la fractura incluyen el límite de la interface de la zona completamente fusionada (CFZ) y la zona fusionada del material base (BMFZ), que en combinación definieron todo el mecanismo de la fractura.

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