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Stress-induced damage evolution in cast AlSi12CuMgNi alloy with one- and two-ceramic reinforcements

Cabeza, S. and Mishurova, T. and Garcés, G. and Sevostianov, I. and Requena, G. and Bruno, G. (2017) Stress-induced damage evolution in cast AlSi12CuMgNi alloy with one- and two-ceramic reinforcements. Journal of Materials Science, 52 (17), pp. 10198-10216. Springer. ISSN 0022-2461

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Official URL: http://dx.doi.org/10.1007/s10853-017-1182-7

Abstract

Two composites, consisting of an as-cast AlSi12CuMgNi alloy reinforced with 15 vol% Al2O3 short fibres and with 7 vol% Al2O3 short fibres + 15 vol% SiC particles, were studied. Synchrotron computed tomography disclosed distribution, orientation, and volume fraction of the different phases. In-situ compression tests during neutron diffraction in direction parallel to the fibres plane revealed the load partition between phases. Internal damage (fragmentation) of the Si phase and Al2O3 fibres was directly observed in CT reconstructions. Significant debonding between Al matrix and SiC particles was also found. Finally, based on the Maxwell scheme, a micromechanical model was utilized for the new composite with two-ceramic reinforcements; it rationalizes the experimental data and predicts the evolution of all internal stress components in each phase.

Item URL in elib:https://elib.dlr.de/115744/
Document Type:Article
Additional Information:Referierte Publikation
Title:Stress-induced damage evolution in cast AlSi12CuMgNi alloy with one- and two-ceramic reinforcements
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Cabeza, S.UNSPECIFIEDUNSPECIFIED
Mishurova, T.UNSPECIFIEDUNSPECIFIED
Garcés, G.UNSPECIFIEDUNSPECIFIED
Sevostianov, I.UNSPECIFIEDUNSPECIFIED
Requena, G.UNSPECIFIEDUNSPECIFIED
Bruno, G.UNSPECIFIEDUNSPECIFIED
Date:2017
Journal or Publication Title:Journal of Materials Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:52
Page Range:pp. 10198-10216
Publisher:Springer
ISSN:0022-2461
Status:Published
Keywords:Cast AlSi alloys, Neutron diffraction Composites Synchrotron Tomography
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Metallic Structures and Hybrid Material Systems
Deposited By: Requena, Guillermo
Deposited On:22 Nov 2017 09:16
Last Modified:06 Sep 2019 15:28

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