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A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations
The formulation of the Hall–Petch relationship in the early 1950s has raised immense interest in studying the influence of the grain size of solid materials on their properties. Grain refinement can be achieved through extreme deformation. In the presented study, Equal-Channel Angular Pressing (ECAP...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8156885/ https://www.ncbi.nlm.nih.gov/pubmed/34065770 http://dx.doi.org/10.3390/ma14102594 |
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author | Harničárová, Marta Valíček, Jan Kušnerová, Milena Palková, Zuzana Kopal, Ivan Borzan, Cristina Kadnár, Milan Paulovič, Stanislav |
author_facet | Harničárová, Marta Valíček, Jan Kušnerová, Milena Palková, Zuzana Kopal, Ivan Borzan, Cristina Kadnár, Milan Paulovič, Stanislav |
author_sort | Harničárová, Marta |
collection | PubMed |
description | The formulation of the Hall–Petch relationship in the early 1950s has raised immense interest in studying the influence of the grain size of solid materials on their properties. Grain refinement can be achieved through extreme deformation. In the presented study, Equal-Channel Angular Pressing (ECAP) was successfully applied to produce an ultrafine-grained microstructure in a pure commercial Cu of 99.9 wt%. Samples were processed by ECAP at 21 °C for six passes via route A. A new equation of equilibrium that allows the exact determination of the number of extrusions and other technological parameters required to achieve the desired final grain size has been developed. The presented research also deals, in a relatively detailed and comparative way, with the use of ultrasound. In this context, a very close correlation between the process functions of extrusion and the speed of longitudinal ultrasonic waves was confirmed. |
format | Online Article Text |
id | pubmed-8156885 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-81568852021-05-28 A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations Harničárová, Marta Valíček, Jan Kušnerová, Milena Palková, Zuzana Kopal, Ivan Borzan, Cristina Kadnár, Milan Paulovič, Stanislav Materials (Basel) Article The formulation of the Hall–Petch relationship in the early 1950s has raised immense interest in studying the influence of the grain size of solid materials on their properties. Grain refinement can be achieved through extreme deformation. In the presented study, Equal-Channel Angular Pressing (ECAP) was successfully applied to produce an ultrafine-grained microstructure in a pure commercial Cu of 99.9 wt%. Samples were processed by ECAP at 21 °C for six passes via route A. A new equation of equilibrium that allows the exact determination of the number of extrusions and other technological parameters required to achieve the desired final grain size has been developed. The presented research also deals, in a relatively detailed and comparative way, with the use of ultrasound. In this context, a very close correlation between the process functions of extrusion and the speed of longitudinal ultrasonic waves was confirmed. MDPI 2021-05-16 /pmc/articles/PMC8156885/ /pubmed/34065770 http://dx.doi.org/10.3390/ma14102594 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Harničárová, Marta Valíček, Jan Kušnerová, Milena Palková, Zuzana Kopal, Ivan Borzan, Cristina Kadnár, Milan Paulovič, Stanislav A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations |
title | A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations |
title_full | A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations |
title_fullStr | A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations |
title_full_unstemmed | A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations |
title_short | A New Method of Predicting the Structural and Mechanical Change of Materials during Extrusion by the Method of Multiple Plastic Deformations |
title_sort | new method of predicting the structural and mechanical change of materials during extrusion by the method of multiple plastic deformations |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8156885/ https://www.ncbi.nlm.nih.gov/pubmed/34065770 http://dx.doi.org/10.3390/ma14102594 |
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