Resistance of the Contact Welding Electrodes Made of a Cu–0.7% Cr–0.9% Hf Alloy with an Ultrafine-Grained Structure
- Authors: Shan’gina D.V.1,2, Ivanov N.I.3, Bochvar N.R.1, Dobatkin S.V.1,2
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Affiliations:
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
- Laboratory of Hybrid Nanostructured Materials, National University of Science and Technology MISiS
- Southwest State University
- Issue: Vol 2018, No 9 (2018)
- Pages: 815-819
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/172115
- DOI: https://doi.org/10.1134/S0036029518090112
- ID: 172115
Cite item
Abstract
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.
About the authors
D. V. 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
Author for correspondence.
Email: shanginadaria@mail.ru
Russian Federation, Moscow; Moscow
N. I. Ivanov
Southwest State University
Email: shanginadaria@mail.ru
Russian Federation, Kursk
N. R. Bochvar
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: shanginadaria@mail.ru
Russian Federation, Moscow
S. V. 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
Russian Federation, Moscow; Moscow