Effect of plastic deformation on the precipitation sequence of 2024 aluminum alloy

J. C. Guía-Tello, C. G. Garay-Reyes*, G. Rodríguez-Cabriales, H. M. Medrano-Prieto, M. A. Ruiz-Esparza-Rodríguez, L. J. García Hernández, J. M. Mendoza-Duarte, K. A. García-Aguirre, I. Estrada-Guel, S. Gonzalez, R. Martínez-Sánchez*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The present study aims to evaluate plastic deformation's effect by cold-rolling on the precipitation sequence of 2024 aluminum alloy. X-ray diffraction, scanning/transmission electron microscopy, and Vickers microhardness tests have been used to characterize the microstructure and mechanical behavior of the alloys. It was observed that plastic deformation induces changes in the precipitation sequence, which affects the mechanical properties and delays the overaging stage. In the deformed alloy, two hardening peaks were observed. These peaks occurred at 30 min (248 HV ± 5) and 600 min (230 HV ± 2) and were attributed to the θ' and S' phases, respectively. However, in the non-deformed alloy, only a single hardening peak was observed. This peak arose after 300 min aging (208 HV ± 4) and was attributed to the S' phase formation. Thus, the precipitation sequence in the deformed alloy was the following: αSSS–CuMg clusters → GPB-II zones/θ''/θ'/ → S' → S, and for the non-deformed alloy was αSSS–CuMg clusters → GPB-II zones/S'/ → S.
Original languageEnglish
Pages (from-to)2180–2193
Number of pages14
JournalJournal of Materials Science
Volume57
Issue number3
DOIs
Publication statusPublished - 1 Jan 2022

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