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Microstructures and mechanical properties of pure copper deformed severely by equal-channel angular pressing and high pressure torsion
Lugo, N; Llorca, N; Cabrera Marrero, José M.; Horita, Z
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
Pure Cu of 99.98 wt.% purity has been processed at room temperature by diverse techniques of severe plastic deformation, namely equalchannel 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 ∼60 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.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials
Plastics - Testing
Materials - Testing
Plàstics - Proves
Assaigs de materials

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