Microstructure and mechanical properties evaluation after annealing heat treatment of 7475-T7351 alluminum alloy

Evolução da microestrutura e propriedades mecânicas da liga de alumínio 7475-T651 após o tratamento térmico de recozimento para recristalização

Authors

  • Carolina Alencar Caldeira de Souza
  • Andersan dos Santos Paula
  • Luiz Paulo Brandao
  • Saulo Brinco Diniz

DOI:

https://doi.org/10.34117/bjdv8n8-072

Keywords:

mechanical properties, microstructure, 7475-T7351 aluminum, annealing heat treatment

Abstract

The mechanical strength of the 7XXX series aluminum alloys can be improved through cold rolling due to the hardening, however, there is a reduction on ductility, thus requiring a later stage of annealing heat treatment. The present work is aimed on the evaluation of the effects of an annealing heat treatment at 500 °C for 15 minutes, on the microstructure and mechanical properties of a cold rolled 7475-T7351 aluminum alloy with 3 mm thickness. For this purpose, it was used microstructural characterization by scanning electron microscopy / X-ray Dispersive Energy Spectrometry, and uniaxial tensile tests. It was concluded that the annealing heat treatment, promoted the matrix recrystallization, providing a decrease of the tensile strength and yield strength, and increase of the ductility. The coarse precipitates evidenced are similar and possibly Al7Cu2Fe and Al2CuMg.

Published

2022-08-05

How to Cite

Souza, C. A. C. de, Paula, A. dos S., Brandao, L. P., & Diniz, S. B. (2022). Microstructure and mechanical properties evaluation after annealing heat treatment of 7475-T7351 alluminum alloy: Evolução da microestrutura e propriedades mecânicas da liga de alumínio 7475-T651 após o tratamento térmico de recozimento para recristalização. Brazilian Journal of Development, 8(8), 55772–55785. https://doi.org/10.34117/bjdv8n8-072

Issue

Section

Original Papers