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Relating microtexture and dynamic micro hardness in an extruded AA8090 alloy and AA8090-8 vol% $SiC_{p}$ composite

Bauri, R and Pancholi, V and Samajdar, I and Surappa, MK (2005) Relating microtexture and dynamic micro hardness in an extruded AA8090 alloy and AA8090-8 vol% $SiC_{p}$ composite. In: Science and Technology of Advanced Materials, 6 (8). pp. 933-938.

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Official URL: http://www.iop.org/EJ/abstract/1468-6996/6/8/A11/

Abstract

The present study involves combined measurements of microtexture and dynamic ultra micro hardness (DUH) in hot extruded AA8090 aluminum alloy and its composite reinforced with 8 vol% SiCp. Both the materials show strong crystallographic fiber textures-(111) and (001). The dynamic micro hardness shows a clear pattern of difference between these two fiber textures, (111) oriented grains being harder and stiffer. The difference in theta ld between the fibers, where theta and d are the average cell misorientation and cell size, respectively, was marginal in the alloy and thus cannot explain the observed hardness difference. The hardness difference can be explained from the difference in Taylor factors between the respective fibers. Elastic stiffness values estimated from microtexture and DUH follow a similar trend qualitatively. (C) 2005 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Ltd.
Keywords: EBSD;Dynamic microhardness;Al–Li alloy;Particle reinforced composite
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 04 Feb 2010 08:58
Last Modified: 19 Sep 2010 04:56
URI: http://eprints.iisc.ernet.in/id/eprint/17289

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