Resistance of the Contact Welding Electrodes Made of a Cu–0.7% Cr–0.9% Hf Alloy with an Ultrafine-Grained Structure


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Resumo

The structure, the mechanical properties, and the electrical conductivity of the Cu–0.7% Cr–0.9% Hf alloy subjected to equal-channel angular pressing (ECAP) followed by aging are studied. The treatment that consists of ECAP and aging at 450°C for 2.5 h is shown to result in a high strength (σu = 605 MPa) and a high electrical conductivity (78% IACS) of the alloy. This combination of properties increases the resistance of the contact welding electrodes made of an ultrafine-grained Cu–0.7% Cr–0.9% Hf alloy as compared to its initial coarse-grained state.

Sobre autores

D. Shan’gina

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences; Laboratory of Hybrid Nanostructured Materials, National University of Science and Technology MISiS

Autor responsável pela correspondência
Email: shanginadaria@mail.ru
Rússia, Moscow; Moscow

N. Ivanov

Southwest State University

Email: shanginadaria@mail.ru
Rússia, Kursk

N. Bochvar

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: shanginadaria@mail.ru
Rússia, Moscow

S. Dobatkin

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences; Laboratory of Hybrid Nanostructured Materials, National University of Science and Technology MISiS

Email: shanginadaria@mail.ru
Rússia, Moscow; Moscow


Declaração de direitos autorais © Pleiades Publishing, Ltd., 2018

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