Crossing the limits of electric conductivity of copper by inducing nanotwinning via extreme plastic deformation at cryogenic conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F24%3A10254192" target="_blank" >RIV/61989100:27360/24:10254192 - isvavai.cz</a>

Result on the web

<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:001128556300001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:001128556300001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchar.2023.113513" target="_blank" >10.1016/j.matchar.2023.113513</a>

Result language

angličtina

Original language name

Crossing the limits of electric conductivity of copper by inducing nanotwinning via extreme plastic deformation at cryogenic conditions

Original language description

Cu features excellent electric conductivity, although typically at the expense of favourable mechanical properties. Nevertheless, by optimizing the processing procedure, the mechanical properties can be enhanced while maintaining advantageous electric conductivity, which consequently increases the efficiency of copper wires and leads to their lower weight, as well as lower costs of material and production. The presented study investigates the effects of a thermomechanical manufacturing procedure involving rotary swaging, an industrially applicable intensive plastic deformation method imparting shear mixing and intensive (sub)structure modifications, performed at cryogenic conditions on the microstructures and mechanical and electric properties of Cu conductors. The results showed that the cryogenic swaging resulted in formation of significantly elongated grains with heavily refined cross-sections, which featured the mechanical properties enhanced by almost 200%, and, simultaneously, the electric conductivity of 104.9% IACS (International Annealed Copper Standard). By applying an optimized heat treatment, the electric conductivity even increased to 105.8% IACS, primarily due to structure homogenization and development of twins in the micro, and also nano scales.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20500 - Materials engineering

Project

<a href="/en/project/GA22-11949S" target="_blank" >GA22-11949S: Nanotwins, functional properties driven by intensive plastic deformation</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials characterization

ISSN

1044-5803

e-ISSN

1873-4189

Volume of the periodical

207

Issue of the periodical within the volume

207

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

nestránkováno

UT code for WoS article

001128556300001

EID of the result in the Scopus database

2-s2.0-85178340802