Eutectic growth in two-phase multicomponent alloys
| Autor: | Peter W. Voorhees, Oriane Senninger |
|---|---|
| Přispěvatelé: | Institut des Nanosciences de Paris (INSP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Service de recherches de métallurgie physique (SRMP), Département des Matériaux pour le Nucléaire (DMN), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Department of materials science and engineering, Northwestern University [Evanston] |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Ternary alloys
Materials science Polymers and Plastics Alloy FOS: Physical sciences Thermodynamics 02 engineering and technology engineering.material Thermal diffusivity 01 natural sciences Physics::Fluid Dynamics Diffusion symbols.namesake Condensed Matter::Materials Science Phase (matter) 0103 physical sciences CALPHAD Eutectic solidification Eutectic system 010302 applied physics Condensed Matter - Materials Science Metals and Alloys Multicomponent Materials Science (cond-mat.mtrl-sci) 021001 nanoscience & nanotechnology Microstructure Electronic Optical and Magnetic Materials Gibbs free energy Ceramics and Composites engineering symbols [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] 0210 nano-technology Ternary operation |
| Zdroj: | Acta Materialia Acta Materialia, 2016, 116, pp.308-320. ⟨10.1016/j.actamat.2016.06.029⟩ Acta Materialia, Elsevier, 2016, 116, pp.308-320. ⟨10.1016/j.actamat.2016.06.029⟩ |
| ISSN: | 1359-6454 |
| DOI: | 10.1016/j.actamat.2016.06.029⟩ |
| Popis: | International audience; A theory of two-phase eutectic growth for a multicomponent alloy is presented. Using the same hypotheses as the Jackson-Hunt theory, we find that the growth law of the microstructure given by Jackson and Hunt for binary alloys can be generalized to systems with N elements. Thermodynamic parameters involved in this theory are linked to the Gibbs free energies of the phases which makes it possible to compute these parameters with CALPHAD tools. A model is derived from this general theory for ternary alloys which does not contain any assumptions on the alloy thermodynamic properties, contrary to previous models. We find that a small addition of a ternary alloying element with a small diffusivity to a binary alloy can significantly alter the spacing of the eutectic. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect