EFFECT OF THERMOMECHANICAL TREATMENT ON STRUCTURAL PHENOMENA AND ELECTROCONDUCTIVITY IN COPPER CONDUCTORS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F22%3A00603648" target="_blank" >RIV/68081723:_____/22:00603648 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.37904/metal.2022.4399" target="_blank" >http://dx.doi.org/10.37904/metal.2022.4399</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2022.4399" target="_blank" >10.37904/metal.2022.4399</a>

Jazyk výsledku

angličtina

Název v původním jazyce

EFFECT OF THERMOMECHANICAL TREATMENT ON STRUCTURAL PHENOMENA AND ELECTROCONDUCTIVITY IN COPPER CONDUCTORS

Popis výsledku v původním jazyce

Despite its relatively high cost, copper is still the most popular electroconductive material. Its electroconductivity can be affected via structure modifications introduced by shear mixing, i.e. deformation processing, and/or thermomechanical treatment. Being an industrially applicable method of intensive plastic deformation, advantageously used to impart shear mixing, rotary swaging is favourable for production of long electroconductive wires. This study is focused on assessment of the effects of thermomechanical treatment on structural phenomena within copper conductors, the treatment consisted of room temperature rotary swaging and subsequent annealing. The results showed that the deformation ratio introduced via swaging was sufficient to impart homogenization of structure as the differences between the grain sizes and texture orientations within the peripheral and axial regions of the conductor were minimal. On the other hand, the swaged and annealed conductor featured slight inhomogeneity between the peripheral and axial regions, especially as regards structure regeneration and the occurrence of twinning, which was more pronounced in the axial region of the thermomechanically processed conductor (the volume fraction of <111> 60 degrees twin boundaries was 60 % within this sample region). Interestingly, the electroconductivity was higher than 100 % IACS (International Annealed Copper Standard) for the swaged conductor, and even increased up to 104.4 % IACS for the annealed conductor due to the structure modifications imparted by the applied heat treatment.

Název v anglickém jazyce

EFFECT OF THERMOMECHANICAL TREATMENT ON STRUCTURAL PHENOMENA AND ELECTROCONDUCTIVITY IN COPPER CONDUCTORS

Popis výsledku anglicky

Despite its relatively high cost, copper is still the most popular electroconductive material. Its electroconductivity can be affected via structure modifications introduced by shear mixing, i.e. deformation processing, and/or thermomechanical treatment. Being an industrially applicable method of intensive plastic deformation, advantageously used to impart shear mixing, rotary swaging is favourable for production of long electroconductive wires. This study is focused on assessment of the effects of thermomechanical treatment on structural phenomena within copper conductors, the treatment consisted of room temperature rotary swaging and subsequent annealing. The results showed that the deformation ratio introduced via swaging was sufficient to impart homogenization of structure as the differences between the grain sizes and texture orientations within the peripheral and axial regions of the conductor were minimal. On the other hand, the swaged and annealed conductor featured slight inhomogeneity between the peripheral and axial regions, especially as regards structure regeneration and the occurrence of twinning, which was more pronounced in the axial region of the thermomechanically processed conductor (the volume fraction of <111> 60 degrees twin boundaries was 60 % within this sample region). Interestingly, the electroconductivity was higher than 100 % IACS (International Annealed Copper Standard) for the swaged conductor, and even increased up to 104.4 % IACS for the annealed conductor due to the structure modifications imparted by the applied heat treatment.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

31st International Conference on Metallurgy and Materials, METAL 2022

ISBN

978-80-88365-06-8

ISSN

2694-9296

e-ISSN

—

Počet stran výsledku

6

Strana od-do

244-249

Název nakladatele

TANGER LTD

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

18. 5. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001235285500038