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Thermal expansion behavior and elevated temperature elastic properties of an interpenetrating metal/ceramic composite

Schukraft, Joél and Roßdeutscher, Jan and Siegmund, Frederik and Weidenmann, Kay A. (2022) Thermal expansion behavior and elevated temperature elastic properties of an interpenetrating metal/ceramic composite. Thermochimica Acta. Elsevier. doi: 10.1016/j.tca.2022.179298. ISSN 0040-6031.

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Abstract

The thermal and elastic behavior of an interpenetrating metal ceramic composite (IMCC), consisting of ceramic foam with 74 % open porosity and an AlSi10Mg light-weight aluminum alloy was investigated at elevated temperatures. The elastic properties of the IMCC and its individual components were determined by ultrasonic phase spectroscopy and resonant frequency damping analysis (RFDA) at RT, showing a highly isotropic behavior for the IMCC. The directional elastic modulus measured at elevated temperature by RFDA decreased from about 110 GPa at room temperature to 80 GPa at 500°C. The elastic modulus temperature curve shows a clear hysteresis for the IMCC, but not for the individual components. Dilatometry experiments revealed the onset of a hysteresis effect in the CTE curve between 260 and 285°C. The hysteresis behavior could be explained by internal stress relaxation, reduction of micro voids and interfacial detachment and assigned to characteristic areas of the hysteresis curve. The associated behavior of the elastic modulus over the temperature range was investigated in detail, and the hysteresis behavior, observed for the first time in the literature was assigned and explained.

Item URL in elib:https://elib.dlr.de/188900/
Document Type:Article
Title:Thermal expansion behavior and elevated temperature elastic properties of an interpenetrating metal/ceramic composite
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schukraft, JoélUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roßdeutscher, JanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Siegmund, FrederikUniversität AugsburgUNSPECIFIEDUNSPECIFIED
Weidenmann, Kay A.Universität AugsburgUNSPECIFIEDUNSPECIFIED
Date:28 July 2022
Journal or Publication Title:Thermochimica Acta
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1016/j.tca.2022.179298
Publisher:Elsevier
ISSN:0040-6031
Status:Published
Keywords:Interpenetrating Metal Ceramic Composite (IMCC) Resonant Frequency Damping Analysis (RFDA) Ultrasonic Phase Spectroscopy (UPS) Dilatometry
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Clean Propulsion
DLR - Research area:Aeronautics
DLR - Program:L CP - Clean Propulsion
DLR - Research theme (Project):L - Advanced Materials and New Manufacturing Technologies
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Structural and Functional ceramics
Deposited By: Roßdeutscher, Jan
Deposited On:06 Dec 2022 10:01
Last Modified:27 Feb 2024 15:01

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