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(Sub)structure Development in Gradually Swaged Electroconductive Bars.
Jaromír Kopeček1, Lucia Bajtošová2, Petr Veřtát1
1FZU-Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18200 Prague, Czech Republic.
Materials (Basel, Switzerland)
|August 12, 2023
Summary
Optimized deformation processing, like rotary swaging, improves copper
Area of Science:
- Materials Science
- Metallurgy
- Electrical Engineering
Background:
- Copper offers excellent electrical conductivity but lacks mechanical strength.
- Alloying copper improves mechanical properties but reduces electrical conductivity.
- Deformation processing is a promising method to enhance copper's performance.
Purpose of the Study:
- To assess the impact of rotary swaging on copper's microstructure and electrical conductivity.
- To understand how varying swaging ratios affect copper's structural evolution and properties.
Main Methods:
- Rotary swaging of electroconductive copper bars with controlled swaging ratios.
- Microstructural and substructural analysis of processed copper.
- Experimental measurement of electrical conductivity.
Main Results:
- Gradual rotary swaging significantly influences microstructure and substructure.
- Swaging ratios directly impact the structure-forming processes in copper.
- Increased electrical conductivity correlates with grain elongation along the electron flow direction.
Conclusions:
- Optimized deformation processing, specifically rotary swaging, can enhance copper's mechanical properties without sacrificing electrical conductivity.
- Grain elongation parallel to electron movement is key to improved electrical performance in processed copper.
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