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Isothermal furnace for long-term in-situ and real-time X-radiography solidification experiments

Wegener, Mareike and Dreißigacker, Christoph and Becker, Maike and Kargl, F (2021) Isothermal furnace for long-term in-situ and real-time X-radiography solidification experiments. Review of Scientific Instruments, 92 (3), 035114. American Institute of Physics (AIP). doi: 10.1063/5.0037398. ISSN 0034-6748.

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Official URL: https://aip.scitation.org/doi/10.1063/5.0037398

Abstract

A new x-ray isothermal furnace has been developed, suitable for in situ observations of semi-solid processes including the transition from dendritic to globulitic grain morphology and grain coarsening in metallic samples. A homogeneous, isothermal temperature field is achieved using a novel heater concept. The furnace structure is sandwich-like with heating elements positioned in the beam line and parallel to the sample. Planar heat transfer to the sample enables measurements with low cooling rates and a minimized temperature gradient. Cooling rates from 0.1 to 15 K min-1 can be controlled in the temperature range 1170-670 K. The furnace setup is integrable in the existing rotatable laboratory x-ray facility (X-RISE) at the German Aerospace Center (DLR). In this setup, an effective pixel size of 3 mum and a field of view of 8 mm in diameter can be achieved. Preliminary solidification and semi-solid experiments in the hypo-eutectic alloy systems Al-Ge and Al-Cu, inoculated with Al-5Ti-1B grain refiner, are presented. They indicate a very uniform temperature distribution in the sample.

Item URL in elib:https://elib.dlr.de/141490/
Document Type:Article
Additional Information:This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Review of Scientific Instruments 92, 035114 (2021) and may be found at https://aip.scitation.org/doi/10.1063/5.0037398.
Title:Isothermal furnace for long-term in-situ and real-time X-radiography solidification experiments
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wegener, MareikeMareike.Wegener (at) dlr.deUNSPECIFIED
Dreißigacker, ChristophChristoph.Dreissigacker (at) dlr.deUNSPECIFIED
Becker, MaikeMaike.Becker (at) dlr.deUNSPECIFIED
Kargl, FInstitut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, GermanyUNSPECIFIED
Date:23 March 2021
Journal or Publication Title:Review of Scientific Instruments
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:92
DOI :10.1063/5.0037398
Page Range:035114
Publisher:American Institute of Physics (AIP)
ISSN:0034-6748
Status:Published
Keywords:solidification, X-radiography, isothermal furnace, microgravity research
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Projekt MAPHEUS (old), R - Material Design and New Materials, R - Materials Research and Microgravity (MuM)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Kargl, Dr Florian
Deposited On:30 Mar 2021 20:52
Last Modified:07 Apr 2021 13:39

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