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Compressive performance and crack propagation in Al alloy/Ti2AlC composites

TitleCompressive performance and crack propagation in Al alloy/Ti2AlC composites
Publication TypeJournal Article
Year of Publication2016
AuthorsHanaor, DAH, Hu, L, Kan, WH, Proust, G, Foley, M, Karaman, I, Radovic, M
JournalMaterials Science and Engineering a-Structural Materials Properties Microstructure and Processing
Volume672
Pagination247-256
Date Published08
Type of ArticleArticle
ISBN Number0921-5093
Accession NumberWOS:000381952300028
Keywords&, behavior, carbide-aluminum composites, crystal-structure, Materials Science, matrix composites, MAX phase, max phases, mechanical-properties, Metallurgical Engineering, porous ti2alc, stress-strain, Technology - Other Topics, temperature, Ti2AlC, ti3sic2, XRM Tomography, Crack propagation
Abstract

the coarse structured specimens exhibited a compressive strength of 80% relative to this. Reconstructed micro-scale X-ray tomography data revealed different crack propagation mechanisms. Large planar shear cracks propagated throughout the fine structured materials while the coarser specimens exhibited networks of branching cracks propagating preferentially along Al alloy-Ti2AlC phase interfaces and through shrinkage pores in the Al alloy phase. Results suggest that control of porosity, compensation for Al alloy shrinkage and enhancement of the Al alloy-Ti2AlC phase interfaces are key considerations in the design of high performance metal/Ti2AlC phase composites. (C) 2016 Elsevier B.V. All rights reserved.

DOI10.1016/j.msea.2016.06.073
Custom 1

Not AL

Alternate JournalMater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.