Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion

High Pressure Torsion Extrusion (HPTE) as a novel approach in mechanical nanostructuring of metallic materials and alloys has the potential to be utilized in industrial applications due to its unique features in fabricating bulk-nanostructured materials with enhanced mechanical and functional proper...

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Autores principales:	Maksim Antonov, Edgar Garcia-Sanchez, Marco A. L. Hernandez-Rodriguez, Julia Ivanisenko, Lembit Kommel, Babak Omranpour, Fjodor Sergejev
Formato:	article
Lenguaje:	EN
Publicado:	Estonian Academy Publishers 2021
Materias:	mechanical nanostructuring microstructural evolution wear resistance friction coefficient. Science Q
Acceso en línea:	https://doaj.org/article/7da1e358a33e4c27ad9db83516597cc1
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spelling	oai:doaj.org-article:7da1e358a33e4c27ad9db83516597cc12021-11-17T17:48:21ZTailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion1736-60461736-753010.3176/proc.2021.4.23https://doaj.org/article/7da1e358a33e4c27ad9db83516597cc12021-11-01T00:00:00Zhttps://kirj.ee/wp-content/plugins/kirj/pub/proc-4-2021-540-548_20211117095120.pdfhttps://doaj.org/toc/1736-6046https://doaj.org/toc/1736-7530High Pressure Torsion Extrusion (HPTE) as a novel approach in mechanical nanostructuring of metallic materials and alloys has the potential to be utilized in industrial applications due to its unique features in fabricating bulk-nanostructured materials with enhanced mechanical and functional properties. Three different HPTE regimes based on the extrusion speed of the punch (v, mm/min) and rotational speed of the die (Ï, rpm) were used in this work: v7w1, v1w1, and v1w3. The grain refinement obtained by this technique was outstanding since the initial grain size of 120 Î¼m in annealed conditions was reduced to the final grain size of 0.7 Î¼m in v1w3 in merely one pass of extrusion; however, each regime showed a different level of grain refinement depending on the imposed strain. Examination of the tribological properties by reciprocal wear testing in dry conditions revealed no significant change in the coefficient of friction; nevertheless, the mechanism of the wear from adhesion shifted to abrasion and the amount of displaced volume decreased. This modification is associated with the improvement of hardness and the reduction of plasticity in materials that confined the plastic shearing. Increasing the induced strain by changing the HPTE regimes decreased the overall displaced volume and reduced the built-up edge around the wear track.Maksim AntonovEdgar Garcia-SanchezMarco A. L. Hernandez-RodriguezJulia IvanisenkoLembit KommelBabak OmranpourFjodor SergejevEstonian Academy Publishersarticlemechanical nanostructuringmicrostructural evolutionwear resistancefriction coefficient.ScienceQENProceedings of the Estonian Academy of Sciences, Vol 70, Iss 4, Pp 540-548 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	mechanical nanostructuring microstructural evolution wear resistance friction coefficient. Science Q
spellingShingle	mechanical nanostructuring microstructural evolution wear resistance friction coefficient. Science Q Maksim Antonov Edgar Garcia-Sanchez Marco A. L. Hernandez-Rodriguez Julia Ivanisenko Lembit Kommel Babak Omranpour Fjodor Sergejev Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion
description	High Pressure Torsion Extrusion (HPTE) as a novel approach in mechanical nanostructuring of metallic materials and alloys has the potential to be utilized in industrial applications due to its unique features in fabricating bulk-nanostructured materials with enhanced mechanical and functional properties. Three different HPTE regimes based on the extrusion speed of the punch (v, mm/min) and rotational speed of the die (Ï, rpm) were used in this work: v7w1, v1w1, and v1w3. The grain refinement obtained by this technique was outstanding since the initial grain size of 120 Î¼m in annealed conditions was reduced to the final grain size of 0.7 Î¼m in v1w3 in merely one pass of extrusion; however, each regime showed a different level of grain refinement depending on the imposed strain. Examination of the tribological properties by reciprocal wear testing in dry conditions revealed no significant change in the coefficient of friction; nevertheless, the mechanism of the wear from adhesion shifted to abrasion and the amount of displaced volume decreased. This modification is associated with the improvement of hardness and the reduction of plasticity in materials that confined the plastic shearing. Increasing the induced strain by changing the HPTE regimes decreased the overall displaced volume and reduced the built-up edge around the wear track.
format	article
author	Maksim Antonov Edgar Garcia-Sanchez Marco A. L. Hernandez-Rodriguez Julia Ivanisenko Lembit Kommel Babak Omranpour Fjodor Sergejev
author_facet	Maksim Antonov Edgar Garcia-Sanchez Marco A. L. Hernandez-Rodriguez Julia Ivanisenko Lembit Kommel Babak Omranpour Fjodor Sergejev
author_sort	Maksim Antonov
title	Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion
title_short	Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion
title_full	Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion
title_fullStr	Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion
title_full_unstemmed	Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion
title_sort	tailoring the microstructure and tribological properties in commercially pure aluminium processed by high pressure torsion extrusion
publisher	Estonian Academy Publishers
publishDate	2021
url	https://doaj.org/article/7da1e358a33e4c27ad9db83516597cc1
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Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion

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