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Mechanical Properties, Fatigue Life, and Electrical Conductivity of Cu–Cr–Hf Alloy after Equal Channel Angular Pressing
Author(s) -
Shangina Daria V.,
Terent'ev Vladimir F.,
Prosvirnin Dmitry V.,
Antonova Olga V.,
Bochvar Natalia R.,
Gorshenkov Mikhail V.,
Raab Georgy I.,
Dobatkin Sergey V.
Publication year - 2018
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201700536
Subject(s) - materials science , pressing , alloy , quenching (fluorescence) , metallurgy , electrical resistivity and conductivity , elongation , grain size , precipitation , composite material , ultimate tensile strength , physics , quantum mechanics , meteorology , electrical engineering , fluorescence , engineering
Structure, mechanical, and service properties of a Cu–Cr–Hf alloy after quenching, equal‐channel angular pressing (ECAP), and subsequent aging have been studied. The positive effects of ultrafine‐grained structure formation (grain/subgrain size of ≈200 nm) during ECAP and strengthening particles precipitation upon subsequent aging at 450 °C on the mechanical and fatigue properties of the alloy are shown. Ultrafine‐grained Cu–Cr–Hf alloy after aging shows increasing in the fatigue limit on the basis of 10 7 cycles from 185 to 375 MPa relative to that of the initial coarse‐grained state. The alloy after ECAP and aging also exhibits sufficient elongation to failure (11.4%) and good electrical conductivity (78%IACS).
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