Effect of the Hot Deformation Conditions on Structure and Mechanical Properties of AlCr/AlCrSi Powder Composites

Aluminum matrix composites usually contain strengthening particles of refractory compounds (SiC, Al<sub>2</sub>O<sub>3</sub>) that do not react with the Al matrix. There is a problem in producing the Al matrix composite with inclusion of metals that can generate intermetallic...

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Autores principales:	Elena N. Korosteleva, Gennady A. Pribytkov, Victoria V. Korzhova
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Al matrix composites powder materials hot compaction structure high temperature deformation mechanical properties Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/df71ffdcb9a84c119e72363f29b2de25
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spelling	oai:doaj.org-article:df71ffdcb9a84c119e72363f29b2de252021-11-25T18:22:26ZEffect of the Hot Deformation Conditions on Structure and Mechanical Properties of AlCr/AlCrSi Powder Composites10.3390/met111118532075-4701https://doaj.org/article/df71ffdcb9a84c119e72363f29b2de252021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1853https://doaj.org/toc/2075-4701Aluminum matrix composites usually contain strengthening particles of refractory compounds (SiC, Al<sub>2</sub>O<sub>3</sub>) that do not react with the Al matrix. There is a problem in producing the Al matrix composite with inclusion of metals that can generate intermetallic compounds with aluminum. In this case, a conventional sintering of powder mixtures results in high porosity due to volume growth. That is why some new methods of producing dense Al matrix composites are required. A possibility to create a dense powder Al-based composite containing hard components, such as chromium and silicon, without using the sintering process, is considered. This paper presents study results of structural and mechanical properties of Al-Cr and Al-Cr-Si composites produced by hot compaction of powder mixtures. An analysis of the relationship between mechanical properties and structures of Al-Cr and Al-Cr-Si composites is carried out. Optimal values for thermomechanical processing modes that ensure sufficient strength and plasticity are determined. It is shown that strong bonding of the aluminum particles occurs under hot deformation, and an aluminum matrix is formed that provides acceptable composite bending strength as a result. The presence of chromium and silicon hard inclusions is not a significant obstacle for aluminum plastic flow. Al-Cr and Al-Cr-Si composites produced by hot deformation of the powder mixtures can be used as cathode material for the deposition of wear-resistant nitride coatings on metalworking tools.Elena N. KorostelevaGennady A. PribytkovVictoria V. KorzhovaMDPI AGarticleAl matrix compositespowder materialshot compactionstructurehigh temperature deformationmechanical propertiesMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1853, p 1853 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Al matrix composites powder materials hot compaction structure high temperature deformation mechanical properties Mining engineering. Metallurgy TN1-997
spellingShingle	Al matrix composites powder materials hot compaction structure high temperature deformation mechanical properties Mining engineering. Metallurgy TN1-997 Elena N. Korosteleva Gennady A. Pribytkov Victoria V. Korzhova Effect of the Hot Deformation Conditions on Structure and Mechanical Properties of AlCr/AlCrSi Powder Composites
description	Aluminum matrix composites usually contain strengthening particles of refractory compounds (SiC, Al<sub>2</sub>O<sub>3</sub>) that do not react with the Al matrix. There is a problem in producing the Al matrix composite with inclusion of metals that can generate intermetallic compounds with aluminum. In this case, a conventional sintering of powder mixtures results in high porosity due to volume growth. That is why some new methods of producing dense Al matrix composites are required. A possibility to create a dense powder Al-based composite containing hard components, such as chromium and silicon, without using the sintering process, is considered. This paper presents study results of structural and mechanical properties of Al-Cr and Al-Cr-Si composites produced by hot compaction of powder mixtures. An analysis of the relationship between mechanical properties and structures of Al-Cr and Al-Cr-Si composites is carried out. Optimal values for thermomechanical processing modes that ensure sufficient strength and plasticity are determined. It is shown that strong bonding of the aluminum particles occurs under hot deformation, and an aluminum matrix is formed that provides acceptable composite bending strength as a result. The presence of chromium and silicon hard inclusions is not a significant obstacle for aluminum plastic flow. Al-Cr and Al-Cr-Si composites produced by hot deformation of the powder mixtures can be used as cathode material for the deposition of wear-resistant nitride coatings on metalworking tools.
format	article
author	Elena N. Korosteleva Gennady A. Pribytkov Victoria V. Korzhova
author_facet	Elena N. Korosteleva Gennady A. Pribytkov Victoria V. Korzhova
author_sort	Elena N. Korosteleva
title	Effect of the Hot Deformation Conditions on Structure and Mechanical Properties of AlCr/AlCrSi Powder Composites
title_short	Effect of the Hot Deformation Conditions on Structure and Mechanical Properties of AlCr/AlCrSi Powder Composites
title_full	Effect of the Hot Deformation Conditions on Structure and Mechanical Properties of AlCr/AlCrSi Powder Composites
title_fullStr	Effect of the Hot Deformation Conditions on Structure and Mechanical Properties of AlCr/AlCrSi Powder Composites
title_full_unstemmed	Effect of the Hot Deformation Conditions on Structure and Mechanical Properties of AlCr/AlCrSi Powder Composites
title_sort	effect of the hot deformation conditions on structure and mechanical properties of alcr/alcrsi powder composites
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/df71ffdcb9a84c119e72363f29b2de25
work_keys_str_mv	AT elenankorosteleva effectofthehotdeformationconditionsonstructureandmechanicalpropertiesofalcralcrsipowdercomposites AT gennadyapribytkov effectofthehotdeformationconditionsonstructureandmechanicalpropertiesofalcralcrsipowdercomposites AT victoriavkorzhova effectofthehotdeformationconditionsonstructureandmechanicalpropertiesofalcralcrsipowdercomposites
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Effect of the Hot Deformation Conditions on Structure and Mechanical Properties of AlCr/AlCrSi Powder Composites

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