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

Sergejev, F. y Omranpour, B. y Kommel, L. y Ivanisenko, J. y Hernández Rodríguez, M. A. y García Sánchez, Edgar y Antonov, M. (2021) Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion. Proceedings of the Estonian Academy of Sciences, 70 (4). pp. 540-548. ISSN 1736-6046

[img]
Vista previa
Texto
23495.pdf - Versión Publicada
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (5MB) | Vista previa
URL o página oficial: http://doi.org/10.3176/proc.2021.4.23

Resumen

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 (�, 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 μm in annealed conditions was reduced to the final grain size of 0.7 μm 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.

Tipo de elemento: Article
Palabras claves no controlados: nanoestructuración mecánica, evolución microestructural, resistencia al desgaste, coeficiente de fricción.
Materias: T Tecnología > TJ Ingeniería Mecánica
Divisiones: Ingeniería Mecánica y Eléctrica
Usuario depositante: Editor Repositorio
Creadores:
CreadorEmailORCID
Sergejev, F.NO ESPECIFICADONO ESPECIFICADO
Omranpour, B.NO ESPECIFICADONO ESPECIFICADO
Kommel, L.NO ESPECIFICADONO ESPECIFICADO
Ivanisenko, J.NO ESPECIFICADONO ESPECIFICADO
Hernández Rodríguez, M. A.NO ESPECIFICADONO ESPECIFICADO
García Sánchez, EdgarNO ESPECIFICADONO ESPECIFICADO
Antonov, M.NO ESPECIFICADONO ESPECIFICADO
Fecha del depósito: 28 Jun 2022 20:40
Última modificación: 28 Jun 2022 21:00
URI: http://eprints.uanl.mx/id/eprint/23495

Actions (login required)

Ver elemento Ver elemento

Downloads

Downloads per month over past year