The Influence of Conventional or KOBO Extrusion Process on the Properties of AZ91 (MgAl9Zn1) Alloy
Designers’ efforts to use the lightest possible materials with very good mechanical properties mean that in recent years magnesium alloys have been increasingly used. It is well-known that the use of various plastic working processes allows achieving even better strength properties of the material,...
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2021
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oai:doaj.org-article:aef1f971ffc3483f912d9028d3899aaa2021-11-11T18:07:20ZThe Influence of Conventional or KOBO Extrusion Process on the Properties of AZ91 (MgAl9Zn1) Alloy10.3390/ma142165431996-1944https://doaj.org/article/aef1f971ffc3483f912d9028d3899aaa2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6543https://doaj.org/toc/1996-1944Designers’ efforts to use the lightest possible materials with very good mechanical properties mean that in recent years magnesium alloys have been increasingly used. It is well-known that the use of various plastic working processes allows achieving even better strength properties of the material, often without significant loss of plastic properties in relation to the properties of products obtained in the casting process. The article presents the results of research on microstructural changes and mechanical properties of the alloy AZ91 (MgAl9Zn1) occurring in samples subjected to conventional plastic deformation and the KOBO method. The obtained results were compared to the properties of reference samples, i.e., cast samples. The article presents the advantage of using the low-temperature KOBO method compared to the high-temperature deformation in a conventional manner. Moreover, it has been shown that the use of KOBO extrusion allows the alloy AZ91 (MgAl9Zn1) to obtain superplasticity properties with an elongation of up to 577% compared to the cast reference sample, which is generally classified as difficult for plastic deformation.Piotr DługoszWłodzimierz BochniakPaweł OstachowskiRafał MolakMartin Duarte GuigouMarek HebdaMDPI AGarticlemagnesium alloysKOBO methodsuperplasticitymicrostructuremechanical propertiesTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6543, p 6543 (2021) |
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magnesium alloys KOBO method superplasticity microstructure mechanical properties Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
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magnesium alloys KOBO method superplasticity microstructure mechanical properties Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Piotr Długosz Włodzimierz Bochniak Paweł Ostachowski Rafał Molak Martin Duarte Guigou Marek Hebda The Influence of Conventional or KOBO Extrusion Process on the Properties of AZ91 (MgAl9Zn1) Alloy |
description |
Designers’ efforts to use the lightest possible materials with very good mechanical properties mean that in recent years magnesium alloys have been increasingly used. It is well-known that the use of various plastic working processes allows achieving even better strength properties of the material, often without significant loss of plastic properties in relation to the properties of products obtained in the casting process. The article presents the results of research on microstructural changes and mechanical properties of the alloy AZ91 (MgAl9Zn1) occurring in samples subjected to conventional plastic deformation and the KOBO method. The obtained results were compared to the properties of reference samples, i.e., cast samples. The article presents the advantage of using the low-temperature KOBO method compared to the high-temperature deformation in a conventional manner. Moreover, it has been shown that the use of KOBO extrusion allows the alloy AZ91 (MgAl9Zn1) to obtain superplasticity properties with an elongation of up to 577% compared to the cast reference sample, which is generally classified as difficult for plastic deformation. |
format |
article |
author |
Piotr Długosz Włodzimierz Bochniak Paweł Ostachowski Rafał Molak Martin Duarte Guigou Marek Hebda |
author_facet |
Piotr Długosz Włodzimierz Bochniak Paweł Ostachowski Rafał Molak Martin Duarte Guigou Marek Hebda |
author_sort |
Piotr Długosz |
title |
The Influence of Conventional or KOBO Extrusion Process on the Properties of AZ91 (MgAl9Zn1) Alloy |
title_short |
The Influence of Conventional or KOBO Extrusion Process on the Properties of AZ91 (MgAl9Zn1) Alloy |
title_full |
The Influence of Conventional or KOBO Extrusion Process on the Properties of AZ91 (MgAl9Zn1) Alloy |
title_fullStr |
The Influence of Conventional or KOBO Extrusion Process on the Properties of AZ91 (MgAl9Zn1) Alloy |
title_full_unstemmed |
The Influence of Conventional or KOBO Extrusion Process on the Properties of AZ91 (MgAl9Zn1) Alloy |
title_sort |
influence of conventional or kobo extrusion process on the properties of az91 (mgal9zn1) alloy |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/aef1f971ffc3483f912d9028d3899aaa |
work_keys_str_mv |
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1718431962492829696 |