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

Authors: Bourezg, Y.I., Azzeddine, H., Abib, K., Huang, Y., Bradai, D. and Langdon, T.G.

Journal: Journal of Materials Research and Technology

Volume: 9

Issue: 3

Pages: 3047-3054

ISSN: 2238-7854

DOI: 10.1016/j.jmrt.2020.01.035

Abstract:

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

https://eprints.bournemouth.ac.uk/33220/

Source: Scopus