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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13119
Title: Workability and mechanical properties of ultrasonically cast Al-Al 2O 3 nanocomposites
Authors: Mula, Suhrit
Pabi S.K.
Koch C.C.
Padhi P.
Ghosh S.
Published in: Materials Science and Engineering A
Abstract: Workability and mechanical properties of the ultrasonically cast Al-X wt% Al 2O 3 (X=2, 3.57 and 4.69) metal matrix nanocomposites were reported in the present investigation. The Al-Al 2O 3 (average size ~10nm) composites showed maximum reduction ratios of 2, 1.75 and 1.41 at room temperature, and 8, 7 and 6 at 300°C. The elastic modulus, nanoindentation hardness, microhardness and Vickers hardness were measured on the as-cast, cold and hot rolled specimens. The tensile properties were also evaluated for the as-cast composites for different wt% of reinforcement. The microstructural examination was done by optical, scanning and transmission electron microscopy. The strength and workability of the nanocomposites were discussed in the light of dislocation/particle interaction, particle size and its concentration, inter-particle spacing and working temperature. 2wt% of Al 2O 3 reinforcement showed better combination of workability and mechanical properties possibly due to better distribution of particulates in the matrix. © 2012 Elsevier B.V.
Citation: Materials Science and Engineering A (2012), 558(): 485-491
URI: https://doi.org/10.1016/j.msea.2012.08.032
http://repository.iitr.ac.in/handle/123456789/13119
Issue Date: 2012
Keywords: Dislocation
Nanocomposite
Nanoindentation hardness
Transmission electron microscopy (TEM)
Workability
ISSN: 9215093
Author Scopus IDs: 12783902100
7003438029
57203364844
55619596400
35513324800
Author Affiliations: Mula, S., Metallurgical and Materials Engineering Department, National Institute of Technology, Rourkela 769 008, India, Metallurgical and Materials Engineering Department, Indian Institute of Technology, Kharagpur 721 302, India
Pabi, S.K., Metallurgical and Materials Engineering Department, Indian Institute of Technology, Kharagpur 721 302, India
Koch, C.C., Department of Materials Science and Engineering, NC State University, Raleigh NC 27695, United States
Padhi, P., Konark Institute of Science and Technology, Bhubaneswar 752 050, India
Ghosh, S., Metallurgical and Materials Engineering Department, Indian Institute of Technology, Kharagpur 721 302, India
Corresponding Author: Mula, S.; Metallurgical and Materials Engineering Department, National Institute of Technology, Rourkela 769 008, India; email: suhritmula@gmail.com
Appears in Collections:Journal Publications [MT]

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