A Quantitative Investigation of Dislocation Density in an Al Matrix Composite Produced by a Combination of Micro-/Macro-Rolling - Publication - MOST Wiedzy

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A Quantitative Investigation of Dislocation Density in an Al Matrix Composite Produced by a Combination of Micro-/Macro-Rolling

Abstract

An aluminum matrix composite with dispersed carbon nanotubes (CNTs) was produced via flake powder metallurgy using a micro-rolling process and vacuum hot pressing (VHP), followed by conventional rolling using a macro-rolling process. The microstructure and mechanical properties of the produced composites were studied. In addition, a new quantitative model was introduced to study the dislocation density based on the microstructural parameters. The results revealed that the distribution characteristics of the CNTs in the Al matrix and the Al-CNT interfaces were the two main governing parameters of dislocation density. Moreover, the dependence of dislocation density on the geometry of the grains and crystallographic texture was shown in this model. The microstructural evolution revealed that a lamellar grain structure had been achieved, with a high capacity for the storage of dislocation. A uniform distribution of CNTs with high bonding quality was also seen in the final microstructure.

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Authors (6)

Keywords

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
Journal of Composites Science no. 6,
ISSN:
Language:
English
Publication year:
2022
Bibliographic description:
Sadeghi B., Shabani A., Heidarinejad A., Laska A., Szkodo M., Cavaliere P.: A Quantitative Investigation of Dislocation Density in an Al Matrix Composite Produced by a Combination of Micro-/Macro-Rolling// Journal of Composites Science -Vol. 6,iss. 6, 199 (2022), s.1-16
DOI:
Digital Object Identifier (open in new tab) 10.3390/jcs6070199
Verified by:
Gdańsk University of Technology

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