Microstructure Development of Powder-Based Cu Composite During High Shear Strain Processing
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F24%3A10255969" target="_blank" >RIV/61989100:27360/24:10255969 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3390/met14121331" target="_blank" >https://doi.org/10.3390/met14121331</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/met14121331" target="_blank" >10.3390/met14121331</a>
Alternative languages
Result language
angličtina
Original language name
Microstructure Development of Powder-Based Cu Composite During High Shear Strain Processing
Original language description
Commercially pure Cu features excellent electric conductivity but low mechanical properties. In order to improve the mechanical properties of Cu, strengthening elements can be added to prepare alloys or composites featuring enhanced performances. This study focuses on the detailed characterization of the microstructure of a Cu composite strengthened with Al2O3 particles during high shear strain processing. The Cu-Al2O3 mixture was prepared by powder metallurgy and directly consolidated by the intensive plastic deformation method of hot rotary swaging. Samples cut from the consolidated piece were further processed by the severe plastic deformation method of high pressure torsion (HPT). The primary aim was to investigate the effects of varying degrees of the imposed shear strain, i.e., the number of HPT revolutions, microstructure development (grain size and morphology, texture, grain misorientations, etc.) of the consolidated composite; the microstructure observations were supplemented with measurements of Vickers microhardness. The results showed that the added oxide particles effectively hindered the movement of dislocations and aggravated grain fragmentation, which also led to the relatively high presence of grain misorientations pointing to the occurrence of residual stress within the microstructure. The high shear strain imposed into (the peripheral region of) the sample subjected to four HPT revolutions imparted equiaxed ultra-fine grains and an average Vickers microhardness of more than 130 HV0.1. © 2024 by the authors.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20500 - Materials engineering
Result continuities
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)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Metals
ISSN
2075-4701
e-ISSN
2075-4701
Volume of the periodical
14
Issue of the periodical within the volume
12
Country of publishing house
CH - SWITZERLAND
Number of pages
16
Pages from-to
nestránkováno
UT code for WoS article
001384830800001
EID of the result in the Scopus database
2-s2.0-85212758045