Evaluation of the characteristics of an AISI 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone

Abstract Quench hardening aims at the microstructural transformation of steels in order to improve hardness and mechanical strength. The aim phase is, in most cases, the martensite. It is necessary to heat the material until it obtains its austenitization and quenching by immersion in a fluid. Curre...

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Autores principales:	Eduardo da Rosa Vieira, Luciano Volcanoglo Biehl, Jorge Luis Braz Medeiros, Vagner Machado Costa, Rodrigo Jorge Macedo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2aab477e8c894fb2abe8f4ed84aa5c0f
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spelling	oai:doaj.org-article:2aab477e8c894fb2abe8f4ed84aa5c0f2021-12-02T14:01:20ZEvaluation of the characteristics of an AISI 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone10.1038/s41598-020-79060-02045-2322https://doaj.org/article/2aab477e8c894fb2abe8f4ed84aa5c0f2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79060-0https://doaj.org/toc/2045-2322Abstract Quench hardening aims at the microstructural transformation of steels in order to improve hardness and mechanical strength. The aim phase is, in most cases, the martensite. It is necessary to heat the material until it obtains its austenitization and quenching by immersion in a fluid. Currently, it is common to use watery polymeric solutions in this procedure. These fluids, which are the mixture of polymers in water, vary their thermal exchange capacity depending on the concentrations applied. The increase in concentration minimizes the removal of heat from the part, reducing the formation capacity of martensite, and developing a lower hardness and strong steel. In this work, microstructural characteristics and properties of AISI 1045 steel quenched in solutions based on polyvinylpyrrolidone (PVP) in 10, 15, 20, and 25% concentration were evaluated. The microstructural characterization quantified the percentage of the phases in each concentration, demonstrating a reduction of martensite as the concentrations were high. The investigation of the samples by x-ray diffraction confirmed the absence of austenite retained in the material. Furthermore, a microhardness scale between the core and the surface was constructed, in which a reduction gradient of the indices of this property towards the core of the sample was evidenced.Eduardo da Rosa VieiraLuciano Volcanoglo BiehlJorge Luis Braz MedeirosVagner Machado CostaRodrigo Jorge MacedoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Eduardo da Rosa Vieira Luciano Volcanoglo Biehl Jorge Luis Braz Medeiros Vagner Machado Costa Rodrigo Jorge Macedo Evaluation of the characteristics of an AISI 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone
description	Abstract Quench hardening aims at the microstructural transformation of steels in order to improve hardness and mechanical strength. The aim phase is, in most cases, the martensite. It is necessary to heat the material until it obtains its austenitization and quenching by immersion in a fluid. Currently, it is common to use watery polymeric solutions in this procedure. These fluids, which are the mixture of polymers in water, vary their thermal exchange capacity depending on the concentrations applied. The increase in concentration minimizes the removal of heat from the part, reducing the formation capacity of martensite, and developing a lower hardness and strong steel. In this work, microstructural characteristics and properties of AISI 1045 steel quenched in solutions based on polyvinylpyrrolidone (PVP) in 10, 15, 20, and 25% concentration were evaluated. The microstructural characterization quantified the percentage of the phases in each concentration, demonstrating a reduction of martensite as the concentrations were high. The investigation of the samples by x-ray diffraction confirmed the absence of austenite retained in the material. Furthermore, a microhardness scale between the core and the surface was constructed, in which a reduction gradient of the indices of this property towards the core of the sample was evidenced.
format	article
author	Eduardo da Rosa Vieira Luciano Volcanoglo Biehl Jorge Luis Braz Medeiros Vagner Machado Costa Rodrigo Jorge Macedo
author_facet	Eduardo da Rosa Vieira Luciano Volcanoglo Biehl Jorge Luis Braz Medeiros Vagner Machado Costa Rodrigo Jorge Macedo
author_sort	Eduardo da Rosa Vieira
title	Evaluation of the characteristics of an AISI 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone
title_short	Evaluation of the characteristics of an AISI 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone
title_full	Evaluation of the characteristics of an AISI 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone
title_fullStr	Evaluation of the characteristics of an AISI 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone
title_full_unstemmed	Evaluation of the characteristics of an AISI 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone
title_sort	evaluation of the characteristics of an aisi 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/2aab477e8c894fb2abe8f4ed84aa5c0f
work_keys_str_mv	AT eduardodarosavieira evaluationofthecharacteristicsofanaisi1045steelquenchedindifferentconcentrationofpolymersolutionsofpolyvinylpyrrolidone AT lucianovolcanoglobiehl evaluationofthecharacteristicsofanaisi1045steelquenchedindifferentconcentrationofpolymersolutionsofpolyvinylpyrrolidone AT jorgeluisbrazmedeiros evaluationofthecharacteristicsofanaisi1045steelquenchedindifferentconcentrationofpolymersolutionsofpolyvinylpyrrolidone AT vagnermachadocosta evaluationofthecharacteristicsofanaisi1045steelquenchedindifferentconcentrationofpolymersolutionsofpolyvinylpyrrolidone AT rodrigojorgemacedo evaluationofthecharacteristicsofanaisi1045steelquenchedindifferentconcentrationofpolymersolutionsofpolyvinylpyrrolidone
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Evaluation of the characteristics of an AISI 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone

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