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

Dendrite remelting during rapid solidification of undercooled CoSi-CoSi2 eutectic alloys quantified by in situ synchrotron X-ray diffraction

Baker, Evan B. and Jeon, Sangho and Shuleshova, O. and Kaban, Ivan and Wang, Yeqing and Gao, J. and Kolbe, M. and SanSoucie, M. P. and Matson, D. M. (2021) Dendrite remelting during rapid solidification of undercooled CoSi-CoSi2 eutectic alloys quantified by in situ synchrotron X-ray diffraction. Scripta Materialia, 194, p. 113645. Elsevier. doi: 10.1016/j.scriptamat.2020.113645. ISSN 1359-6462.

Full text not available from this repository.

Official URL: http://www.elsevier.com/locate/scriptamat

Abstract

The relationship between remelting and undercooling in Co38.2Si61.8 (at. %) eutectic alloys is investigated with in situ X-ray diffraction experiments and microstructural observations. High-energy in situ X-ray diffraction during uncoupled eutectic solidification of undercooled Co38.2Si61.8 allows the phase fractions to be tracked through time and reveals remelting of primary solid coincident with the formation of secondary solid. Microstructure analysis suggests that remelting occurs at the supersaturated dendrite interior. The remelted solid fraction is quantified for a wide range of solidification conditions and found to be strongly correlated with the secondary undercooling of the melt, yet independent of convection and containerless processing technique. A remelting limit was observed in experiments with primary CoSi2, indicating that system-specific factors impose additional constraints.

Item URL in elib:https://elib.dlr.de/143066/
Document Type:Article
Title:Dendrite remelting during rapid solidification of undercooled CoSi-CoSi2 eutectic alloys quantified by in situ synchrotron X-ray diffraction
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Baker, Evan B.Department of Mechanical Engineering, Tufts University, Medford, MA 02155, United StatesUNSPECIFIED
Jeon, SanghoDepartment of Mechanical Engineering, Tufts University, Medford, MA02155, USAUNSPECIFIED
Shuleshova, O.Leibniz-Institut für Festkörper- und WerkstoffforschungUNSPECIFIED
Kaban, IvanIFW DresdenUNSPECIFIED
Wang, YeqingKey Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110819, ChinaUNSPECIFIED
Gao, J.Key Lab of Electromagnetic Processing of MaterialsUNSPECIFIED
Kolbe, M.Institut für Materialphysik im Weltraum, DLR, KölnUNSPECIFIED
SanSoucie, M. P.NASA, Marshall Space Flight Center, Huntsville, AL, USAUNSPECIFIED
Matson, D. M.Tufts University, Medfort, MA, USAUNSPECIFIED
Date:2021
Journal or Publication Title:Scripta Materialia
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:194
DOI:10.1016/j.scriptamat.2020.113645
Page Range:p. 113645
Publisher:Elsevier
ISSN:1359-6462
Status:Published
Keywords:eutectic alloys, dendrite remelting, in situ X-ray diagnostics, microstructure
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 - Project EML3
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Kolbe, Matthias
Deposited On:14 Jul 2021 15:49
Last Modified:21 Jul 2021 12:27

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.