elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Large scale phase-field simulations of directional ternary eutectic solidification

Hötzer, Johannes and Jainta, Marcus and Steinmetz, Philipp and Nestler, Britta and Dennstedt, Anne and Genau, Amber and Bauer, Martin and Köstler, Harald and Rüde, Ulrich (2015) Large scale phase-field simulations of directional ternary eutectic solidification. Acta Materialia (93), pp. 194-204. Elsevier. doi: 10.1016/j.actamat.2015.03.051. ISSN 1359-6454.

Full text not available from this repository.

Abstract

Pattern formation in ternary eutectic microstructures is difficult to predict because of the complex interactions between diffusion and surface energies, as well as the large number of possible configurations which three phases can assume. The silver–aluminum–copper (Ag–Al–Cu) ternary eutectic is of particular interest to researchers, but its study is complicated by an unusually large solubility change. Due to this change, it is difficult to observe the patterns that form during the solid–liquid phase transition experimentally. This causes significant differences between the structure that forms during solidification and what is observed after traditional directional solidification processing. In order to model the solidification behavior and pattern formation in representative volume elements, large scale phase-field simulations are employed. Two different parameter sets are used. The first set uses the phase fractions and compositions of the as-solidified structure. The other used phase fractions found at lower temperatures in order to be comparable to experimental microstructures available in the literature. The second set of simulation results is compared quantitatively to experimental micrographs and found to be in good agreement. The predicted three-dimensional microstructures for the as-solidified structure are presented.

Item URL in elib:https://elib.dlr.de/98644/
Document Type:Article
Title:Large scale phase-field simulations of directional ternary eutectic solidification
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hötzer, JohannesInstitute for Applied Materials - Computational Materials Science (IAM-CMS), Karlsruhe Institute of Technology (KIT), KarlsruheUNSPECIFIED
Jainta, MarcusInstitute for Applied Materials - Computational Materials Science (IAM-CMS), Karlsruhe Institute of Technology (KIT), KarlsruheUNSPECIFIED
Steinmetz, PhilippInstitute for Applied Materials - Computational Materials Science (IAM-CMS), Karlsruhe Institute of Technology (KIT), KarlsruheUNSPECIFIED
Nestler, BrittaInstitute for Applied Materials - Computational Materials Science (IAM-CMS), Karlsruhe Institute of Technology (KIT), KarlsruheUNSPECIFIED
Dennstedt, AnneAnne.Dennstedt (at) dlr.deUNSPECIFIED
Genau, AmberUniversity Alabama at BirminghamUNSPECIFIED
Bauer, MartinLehrstuhl für Informatik 10 (Systemsimulation), Universität Erlangen-Nürnberg, NürnbergUNSPECIFIED
Köstler, HaraldLehrstuhl für Informatik 10 (Systemsimulation), Universität Erlangen-Nürnberg, NürnbergUNSPECIFIED
Rüde, UlrichLehrstuhl für Informatik 10 (Systemsimulation), Universität Erlangen-Nürnberg, NürnbergUNSPECIFIED
Date:2015
Journal or Publication Title:Acta Materialia
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.actamat.2015.03.051
Page Range:pp. 194-204
Publisher:Elsevier
ISSN:1359-6454
Status:Published
Keywords:Phase-field simulation; Directional solidification; Eutectic structure; Al–Ag–Cu; Pattern formation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Vorhaben Materialwissenschaftliche Forschung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space > Scientific Experiments MP
Deposited By: Dennstedt, Dr. Anne
Deposited On:20 Oct 2015 08:20
Last Modified:10 Jan 2019 15:45

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.