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Microstructures and mechanical properties of pure copper deformed severely by equal-channel angular pressing and high pressure torsion

Lugo, N. and Llorca, N. and Cabrera, J. M. and Horita, Z. (2008) Microstructures and mechanical properties of pure copper deformed severely by equal-channel angular pressing and high pressure torsion. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 477 (1-2). pp. 366-371.

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Abstract

Pure Cu of 99.98 wt.% purity has been processed at room temperature by diverse techniques of severe plastic deformation, namely equal-channel angular pressing (ECAP), high pressure torsion (HPT) and a combination of both in order to find out the evolution on the microstructural homogeneity for each of the processes and their combination. Starting with a grain size of similar to 60 mu m, severe plastic deformation has been introduced to the material while maintaining the sample dimensions unchanged through the processes of ECAP and HPT. A significant decrease in grain size was observed by transmission electronic microscopy (TEM). Microtensile and microhardness tests were carried out on the deformed material in the three processing conditions. A significant improvement of the tensile strength was promoted with admissible penalization on ductility. (c) 2007 Elsevier B.V. All rights reserved.

Item Type:Article
Uncontrolled Keywords:equal-channel angular pressing; high pressure torsion; severe plastic deformation
Subjects:Material Science > Functional and hybrid materials
ID Code:5900
Deposited By:IoN
Deposited On:04 Sep 2009 12:05
Last Modified:04 Sep 2009 12:05

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