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Canadian Metallurgical Quarterly
The Canadian Journal of Metallurgy and Materials Science
Volume 59, 2020 - Issue 3
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Materials Processing and Characterization

An investigation on cold, warm and hot deformation behaviour of Al 2024 alloy under as-received, solution heat treated, peak aged and over aged conditions

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Pages 297-305 | Received 02 Apr 2019, Accepted 16 Apr 2020, Published online: 14 May 2020
 

ABSTRACT

In this work, the effects of the dynamic precipitation on the mechanical properties of Al 2024 alloy were investigated under as-received (AR), solution heat treated (SHT), peak aged (PA) and over aged (OA) conditions. The cold, warm and hot deformation were carried out at 25°C, 150°C, 250°C and 350°C for the strain rate of 5.55 × 10−4 s−1. The results indicated that dynamic precipitation takes place and increases the flow stress during warm and hot deformation in the SHT specimens. The most precipitation hardening was observed after testing at 150°C and 250°C for the strain rate of 5.55 × 10−4 s−1.

RÉSUMÉ

Dans ce travail, on a étudié les effets de la précipitation dynamique sur les propriétés mécaniques de l’alliage Al 2024 brut (AR), traité thermiquement en solution (SHT), vieilli en pointe (PA) et survieilli (OA). On a effectué des déformations à froid, tièdes, et à chaud à des températures de 25°C, 150°C, 250°C et 350°C avec une vitesse de déformation de 5.55 × 10−4 s−1. Les résultats indiquaient que la précipitation dynamique prenait place et augmentait la contrainte d’écoulement lors de la déformation tiède et à chaud dans les échantillons SHT. Le durcissement par précipitation le plus important était observé après les essais aux températures de 150°C et 250°C pour la vitesse de déformation de 5.55 × 10−4 s−1.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Scientific Research Projects Coordination Unit of Karabük University. Projects Number: KBU-BAP-18-YL-161.

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