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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12655
Title: Compressive deformation behaviour of coarse SiC particle reinforced composite: Effect of age-hardening and SiC content
Authors: Mondal D.P.
Das S.
Suresh, K. S.
Ramakrishnan N.
Published in: Materials Science and Engineering A
Abstract: Compressive deformation of 2014 Al-alloy-SiCp composite has been compared with that of 2014 Al-alloy in as-cast and peak aged condition. In as-cast condition, the strength, elastic modulus and strain-hardening exponent of the alloy were improved significantly at the expense of its ductility due to reinforcement of SiC particles. After peak aging, the strength of individual material increased, but the elastic modulus and work hardening rate remained almost unchanged. It was interestingly noted that in peak aged condition composites exhibited less strength as compared to that of the alloy. However, the strength, the elastic modulus and the strain-hardening exponent of the composite increased with increase in SiC content irrespective of the processing condition. These have been explained in the perspective of matrix flow and crack propagation depending on interface characteristics, matrix strength and particle shearing. In cast condition, the matrix strength is low enough and the particles are quite stronger than the as-cast matrix. As a result, the particles are capable to resist the flow of the matrix, and the crack propagates primarily through the interdendritic region of the matrix. But in heat-treated condition, the matrix strength increased significantly. It results in intensifying the stress intensity above a critical value at the sharp tip of the flaws within the particles causing particle failure prior to the matrix failure. © 2007 Elsevier B.V. All rights reserved.
Citation: Materials Science and Engineering A (2007), 460-461(): 550-560
URI: https://doi.org/10.1016/j.msea.2007.03.001
http://repository.iitr.ac.in/handle/123456789/12655
Issue Date: 2007
Keywords: Age hardening
Aluminium metal matrix composite
Coarse SiC particles
Compressive deformation
Strain hardening exponent
ISSN: 9215093
Author Scopus IDs: 7006936782
56298970900
54882593400
7006096462
Author Affiliations: Mondal, D.P., Advanced Materials and Processes Research Institute (CSIR), Bhopal, 462026, India
Das, S., Advanced Materials and Processes Research Institute (CSIR), Bhopal, 462026, India
Suresh, K.S., Advanced Materials and Processes Research Institute (CSIR), Bhopal, 462026, India
Ramakrishnan, N., Advanced Materials and Processes Research Institute (CSIR), Bhopal, 462026, India
Corresponding Author: Mondal, D.P.; Advanced Materials and Processes Research Institute (CSIR), Bhopal, 462026, India; email: mondaldp@yahoo.com
Appears in Collections:Journal Publications [MT]

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