DSC analysis of dissolution reaction in an as-cast and HPT-processed Mg-Gd alloy
Authors: Hanna, A., Azzeddine, H., Avettand-Fènoël, M.N., Baudin, T., Huang, Y. and Langdon, T.G.
Journal: Materials Letters
Volume: 376
eISSN: 1873-4979
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2024.137293
Abstract:The dissolution reaction kinetics were determined by differential scanning calorimetry (DSC) analysis for Mg-0.6Gd (wt.%) in an as-cast condition and after processing by high-pressure torsion (HPT) at room temperature for 20 turns. For the as-cast condition, the dissolution temperature was in the range of 634–658 K with an activation energy of 135 ± 9 kJ/mol. After HPT, the range of dissolution temperature decreased to 601–633 K, with a lower activation energy of 118 ± 10 kJ/mol. In both conditions, the Avrami and growth exponents are around 1.5, which suggests that the dissolved precipitates exhibit polyhedron-like morphology and that the dissolution process is dominated by bulk dissolution with a constant rate controlled by diffusion.
https://eprints.bournemouth.ac.uk/40267/
Source: Scopus
DSC analysis of dissolution reaction in an as-cast and HPT-processed Mg-Gd alloy
Authors: Hanna, A., Azzeddine, H., Avettand-Fenoel, M.-N., Baudin, T., Huang, Y. and Langdon, T.G.
Journal: MATERIALS LETTERS
Volume: 376
eISSN: 1873-4979
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2024.137293
https://eprints.bournemouth.ac.uk/40267/
Source: Web of Science (Lite)
DSC analysis of dissolution reaction in an as-cast and HPT-processed Mg-Gd alloy
Authors: Hanna, A., Azzeddine, H., Avettand-Fènoël, M.-N., Baudin, T., Huang, Y. and Langdon, T.G.
Journal: Materials Letters
Volume: 376
Pages: 137293(1)-137293(4)
Publisher: Elsevier
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2024.137293
Abstract:The dissolution reaction kinetics were determined by differential scanning calorimetry (DSC) analysis for Mg-0.6Gd (wt.%) in an as-cast condition and after processing by high-pressure torsion (HPT) at room temperature for 20 turns. For the as-cast condition, the dissolution temperature was in the range of 634–658 K with an activation energy of 135±9 kJ/mol. After HPT, the range of dissolution temperature decreased to 601–633 K, with a lower activation energy of 118±10 kJ/mol. In both conditions, the Avrami and growth exponents are around 1.5, which suggests that the dissolved precipitates exhibit polyhedron-like morphology and that the dissolution process is dominated by bulk dissolution with a constant rate controlled by diffusion.
https://eprints.bournemouth.ac.uk/40267/
Source: Manual
Preferred by: Yi Huang
DSC analysis of dissolution reaction in an as-cast and HPT-processed Mg-Gd alloy
Authors: Hanna, A., Azzeddine, H., Avettand-Fènoël, M.-N., Baudin, T., Huang, Y. and Langdon, T.G.
Journal: Materials Letters
Volume: 376
Publisher: Elsevier
ISSN: 0167-577X
Abstract:The dissolution reaction kinetics were determined by differential scanning calorimetry (DSC) analysis for Mg-0.6Gd (wt.%) in an as-cast condition and after processing by high-pressure torsion (HPT) at room temperature for 20 turns. For the as-cast condition, the dissolution temperature was in the range of 634–658 K with an activation energy of 135±9 kJ/mol. After HPT, the range of dissolution temperature decreased to 601–633 K, with a lower activation energy of 118±10 kJ/mol. In both conditions, the Avrami and growth exponents are around 1.5, which suggests that the dissolved precipitates exhibit polyhedron-like morphology and that the dissolution process is dominated by bulk dissolution with a constant rate controlled by diffusion.
https://eprints.bournemouth.ac.uk/40267/
Source: BURO EPrints