Recrystallization in an Mg-Nd alloy processed by high-pressure torsion: a calorimetric analysis

Yousf Islem Bourezg; Hiba Azzeddine; Khadidja Abib; Yi Huang; Djamel Bradai; Terence G. Langdon

Journal of Materials Research and Technology (May 2020)

Recrystallization in an Mg-Nd alloy processed by high-pressure torsion: a calorimetric analysis

Yousf Islem Bourezg,
Hiba Azzeddine,
Khadidja Abib,
Yi Huang,
Djamel Bradai,
Terence G. Langdon

Affiliations

Yousf Islem Bourezg: Faculty of Physics, University of Sciences and Technology Houari Boumediene, Algiers, Algeria; Department of Physics, Ziane Achour University of Djelfa, BP 3117 Djelfa, Algeria
Hiba Azzeddine: Faculty of Technology, University of Mohamed Boudiaf, M’sila, Algeria; Corresponding author.
Khadidja Abib: Faculty of Physics, University of Sciences and Technology Houari Boumediene, Algiers, Algeria
Yi Huang: Materials Research Group, Department of Mechanical Engineering, University of Southampton, Southampton SO17 1BJ, UK; Department of Design and Engineering, Faculty of Science and Technology, Bournemouth University, Poole, Dorset BH12 5BB, UK
Djamel Bradai: Faculty of Physics, University of Sciences and Technology Houari Boumediene, Algiers, Algeria
Terence G. Langdon: Materials Research Group, Department of Mechanical Engineering, University of Southampton, Southampton SO17 1BJ, UK

Journal volume & issue: Vol. 9, no. 3
pp. 3047 – 3054

Abstract

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Differential scanning calorimetry (DSC) was used to evaluate the recrystallization temperature and activation energy for an Mg-1.43Nd (wt.%) alloy after severe plastic deformation by high-pressure torsion (HPT) at room temperature up to 10 turns. The recrystallization kinetics were determined from DSC analysis. The results show that the recrystallization temperature increases with increasing heating rate and decreases with increasing numbers of HPT turns. Severe plastic deformation by HPT significantly reduces the recrystallization temperature. The estimated activation energy for recrystallization was in the range of ∼ 84−89 kJ mol−1.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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