Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/14915
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dc.contributor.authorAmirkhanlou, S-
dc.contributor.authorRahimian, M-
dc.contributor.authorKetabchi, M-
dc.contributor.authorParvin, N-
dc.contributor.authorYaghinali, P-
dc.contributor.authorCarreno, F-
dc.date.accessioned2017-07-13T13:17:05Z-
dc.date.available2016-10-01-
dc.date.available2017-07-13T13:17:05Z-
dc.date.issued2016-
dc.identifier.citationMetallurgical and Materials Transactions A, 47(10), pp. 5136 - 5145, (2016)en_US
dc.identifier.issn1073-5623-
dc.identifier.urihttp://bura.brunel.ac.uk/handle/2438/14915-
dc.description.abstractThe strengthening mechanisms in nanostructured Al/SiCp composite deformed to high strain by a novel severe plastic deformation process, accumulative press bonding (APB), were investigated. The composite exhibited yield strength of 148 MPa which was 5 and 1.5 times higher than that of raw aluminum (29 MPa) and aluminum-APB (95 MPa) alloys, respectively. A remarkable increase was also observed in the ultimate tensile strength of Al/SiCp-APB composite, 222 MPa, which was 2.5 and 1.2 times greater than the obtained values for raw aluminum (88 MPa) and aluminum-APB (180 MPa) alloys, respectively. Analytical models well described the contribution of various strengthening mechanisms. The contributions of grain boundary, strain hardening, thermal mismatch, Orowan, elastic mismatch, and load-bearing strengthening mechanisms to the overall strength of the Al/SiCp microcomposite were 64.9, 49, 6.8, 2.4, 5.4, and 1.5 MPa, respectively. Whereas Orowan strengthening mechanism was considered as the most dominating strengthening mechanism in Al/SiCp nanocomposites, it was negligible for strengthening the microcomposite. Al/SiCp nanocomposite showed good agreement with quadratic summation model; however, experimental results exhibited good accordance with arithmetic and compounding summation models in the microcomposite. While average grain size of the composite reached 380 nm, it was less than 100 nm in the vicinity of SiC particles as a result of particle-stimulated nucleation mechanism.en_US
dc.description.sponsorshipThe authors acknowledge financial support from CICYT (Spain) under program MAT2012-38962-C03-01 and the Ministry of Science, Research and Technology of Iran.en_US
dc.format.extent5136 - 5145 (10)-
dc.languageEnglish-
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.subjectMetal-matrix compositesen_US
dc.subjectSevere plastic-deformationen_US
dc.subjectUltrafine-grained aluminumen_US
dc.subjectInterstitial-free steelen_US
dc.subjectThermal-expansionen_US
dc.subjectYield strengthen_US
dc.subjectNanocompositeen_US
dc.titleStrengthening mechanisms in nanostructured Al/SiCp composite manufactured by accumulative press bondingen_US
dc.typeArticleen_US
dc.identifier.doihttp://dx.doi.org/10.1007/s11661-016-3666-5-
dc.relation.isPartOfMETALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE-
pubs.issue10-
pubs.publication-statusPublished-
pubs.volume47A-
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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