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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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.
|Uncontrolled Keywords:||equal-channel angular pressing; high pressure torsion; severe plastic deformation|
|Subjects:||Material Science > Functional and hybrid materials|
|Deposited On:||04 Sep 2009 12:05|
|Last Modified:||04 Sep 2009 12:05|
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