Microstructure Optimization of Mg-Alloys by the ECAP Process Including Numerical Simulation, SPD Treatments, Characterization, and Hydrogen Sorption Properties (2019)
- Authors:
- Autor USP: SANDIM, HUGO RICARDO ZSCHOMMLER - EEL
- Unidade: EEL
- DOI: 10.3390/molecules24010089
- Assunto: MATERIAIS
- Keywords: magnesium alloys; severe plastic deformation; ECAP process; numerical simulation; grain and crystallite size; texture; anelastic spectroscopy; hydrogen uptake and kinetics sorption
- Language: Inglês
- Abstract: Both numerical simulation and hardness measurements were used to determine the mechanical and microstructural behavior of AZ31 bulk samples when submitted to the Equal Channel Angular Pressing (ECAP) technique. Billets of this representative of Mg-rich alloys were submitted to different numbers of passes for various ECAP modes (anisotropic A, isotropic BC). The strain distribution, the grain size refinement, and the micro-hardness were used as indicators to quantify the effectiveness of the different processing routes. Structural characterizations at different scales were achieved using Scanning Electron Microscopy (SEM), micro-analysis, metallography, Small Angle Neutron Scattering SANS, X-Ray Diffraction (XRD), and texture determination. The grain and crystallite size distribution and orientation as well as defect impacts were determined. Anelastic Spectroscopy (AS) on mechanically deformed samples have shown that the temperature of ECAP differentiate the fragile to ductile regime. MgH2 consolidated powders were checked for using AS to detect potential hydrogen motions and interaction with host metal atoms. After further optimization, the different mechanically-treated samples were submitted to hydrogenation/dehydrogenation (H/D) cycles, which shows that, for a few passes, the BC mode is better than the A one, as supported by theoretical and experimental microstructure analyses. Accordingly, the hydrogen uptake and (H/D) reactions were correlated with the optimized microstructure peculiarities and interpreted in terms of Johnson-Avrami- Mehl-Kolmogorov (JAMK) and Jander models, successively.
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ABNT
SKRYABINA, Nataliya et al. Microstructure Optimization of Mg-Alloys by the ECAP Process Including Numerical Simulation, SPD Treatments, Characterization, and Hydrogen Sorption Properties. Molecules, v. 24, n. 1, p. 89-121, 2019Tradução . . Disponível em: https://doi.org/10.3390/molecules24010089. Acesso em: 03 abr. 2025. -
APA
Skryabina, N., Lang, J., Cantelli, R., Leardini, F., Aptukov, V., Romanov, P., et al. (2019). Microstructure Optimization of Mg-Alloys by the ECAP Process Including Numerical Simulation, SPD Treatments, Characterization, and Hydrogen Sorption Properties. Molecules, 24( 1), 89-121. doi:10.3390/molecules24010089 -
NLM
Skryabina N, Lang J, Cantelli R, Leardini F, Aptukov V, Romanov P, Fruchart D, Rango P de, Girard G, Grandini CR, Sandim HRZ, Huot J. Microstructure Optimization of Mg-Alloys by the ECAP Process Including Numerical Simulation, SPD Treatments, Characterization, and Hydrogen Sorption Properties [Internet]. Molecules. 2019 ;24( 1): 89-121.[citado 2025 abr. 03 ] Available from: https://doi.org/10.3390/molecules24010089 -
Vancouver
Skryabina N, Lang J, Cantelli R, Leardini F, Aptukov V, Romanov P, Fruchart D, Rango P de, Girard G, Grandini CR, Sandim HRZ, Huot J. Microstructure Optimization of Mg-Alloys by the ECAP Process Including Numerical Simulation, SPD Treatments, Characterization, and Hydrogen Sorption Properties [Internet]. Molecules. 2019 ;24( 1): 89-121.[citado 2025 abr. 03 ] Available from: https://doi.org/10.3390/molecules24010089 - Preparação de ligas 'NB'-'TI''O IND.2' por metalurgia do pó e sua caracterização microestrutural
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Informações sobre o DOI: 10.3390/molecules24010089 (Fonte: oaDOI API)
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