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Gradient microstructure and texture in wedge-based severe plastic burnishing of copper

Wang, Zhiyu and Basu, Saurabh and Murthy, Tejas G and Saldana, Christopher (2018) Gradient microstructure and texture in wedge-based severe plastic burnishing of copper. In: JOURNAL OF MATERIALS RESEARCH, 33 (8). pp. 1046-1056.

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Official URL: https://dx.doi.org/10.1557/jmr.2018.58

Abstract

In the present study, gradient microstructure and texture development in wedge-based severe plastic burnishing of oxygen-free high conductivity copper was investigated. Microstructural response and evolution of crystallographic texture in severe surface plastic deformation was shown to be controllable in terms of both magnitude and gradient through control of the incident wedge angle and burnishing parameters. Equiaxed ultra-fined grains and micro/nanoscale elongated grains were produced in the subsurface region, which is indicative of dynamic recrystallization at large strains in the subsurface. Subsurface regions exhibited a significant fraction of shear texture components along the 110 partial fibers. Texture evolution simulated using the visco-plastic self-consistent framework revealed variations in strain level controlling different mechanisms for rotation of these partial fibers from their ideal orientation. Controllability of subsurface properties and microstructure for such materials is briefly discussed. These results allude to fundamental limits in material processing by severe shear using scalable deformation configurations.

Item Type: Journal Article
Additional Information: Copyright of this article belong to CAMBRIDGE UNIV PRESS, 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Id for Latest eprints
Date Deposited: 17 Jul 2018 15:27
Last Modified: 17 Jul 2018 15:27
URI: http://eprints.iisc.ac.in/id/eprint/60204

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