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Phase-field study of the pattern formation in Al–Ag–Cu under the influence of the melt concentration

Steinmetz, Philipp and Kellner, Michael and Hötzer, Johannes and Dennstedt, Anne and Nestler, Britta (2016) Phase-field study of the pattern formation in Al–Ag–Cu under the influence of the melt concentration. Computational Materials Science, 121, pp. 6-13. Elsevier. doi: 10.1016/j.commatsci.2016.04.025. ISSN 0927-0256.

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Abstract

In single transverse sections of directional solidified ternary eutectics, various microstructure patterns can be observed. These patterns influence the mechanical properties and it is therefore of interest to gain a better understanding of the microstructure formation process. It is assumed that local variations in the concentration of the melt lead to different patterns. To investigate this effect, large-scale threedimensional phase-field simulations of directional solidification in the vicinity of the ternary eutectic point of Al–Ag–Cu are applied. The different arising patterns from the simulations are compared and analyzed with statistical methods. The simulations show different stable patterns within a range of ±1% of the melt concentration around the ternary eutectic point. The same tendencies are observed in experimental micrographs.

Item URL in elib:https://elib.dlr.de/104969/
Document Type:Article
Title:Phase-field study of the pattern formation in Al–Ag–Cu under the influence of the melt concentration
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Steinmetz, PhilippInstitute for Applied Materials - Computational Materials Science (IAM-CMS), Karlsruhe Institute of Technology (KIT), KarlsruheUNSPECIFIED
Kellner, MichaelInstitute for Applied Materials - Computational Materials Science (IAM-CMS), Karlsruhe Institute of Technology (KIT), KarlsruheUNSPECIFIED
Hötzer, JohannesInstitute for Applied Materials - Computational Materials Science (IAM-CMS), Karlsruhe Institute of Technology (KIT), KarlsruheUNSPECIFIED
Dennstedt, AnneAnne.Dennstedt (at) dlr.deUNSPECIFIED
Nestler, BrittaInstitute for Applied Materials - Computational Materials Science (IAM-CMS), Karlsruhe Institute of Technology (KIT), KarlsruheUNSPECIFIED
Date:2016
Journal or Publication Title:Computational Materials Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:121
DOI :10.1016/j.commatsci.2016.04.025
Page Range:pp. 6-13
Publisher:Elsevier
ISSN:0927-0256
Status:Published
Keywords:Directional solidification; Phase-field; Ternary eutectic alloy; Al–Ag–Cu; Pattern selection; Melt concentration
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 - Material Design and New Materials, R - Materials Research and Microgravity (MuM)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space > Scientific Experiments MP
Deposited By: Kargl, Dr Florian
Deposited On:04 Jul 2016 07:05
Last Modified:06 Sep 2019 15:24

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