4.7 Article

Characteristics of submicron grained structure formed in aluminum by equal channel angular extrusion

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ELSEVIER SCIENCE SA
DOI: 10.1016/S0921-5093(99)00800-X

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aluminum; equal channel angular extrusion; submicron grained structure; plastic deformation

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This work has shown that submicron grained (similar to 0.35 mu m) structure can be formed by applying equal channel angular extrusion (ECAE) to epsilon=8 at room temperature. Tn addition, the resulted submicron grained structure is characterized by a random microtexture. Based on the observation, it is suggested that grain subdivision and texture evolution, as well as local boundary migration are the possible mechanisms involved in the formation of submicron grains during severe plastic deformation. (C) 2000 Elsevier Science S.A. All rights reserved.

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