Using Intercritical CCT Diagrams and Multiple Linear Regression for the Development of Low-Alloyed Advanced High-Strength Steels

The present work presents a theoretical and experimental study regarding the microstructure, phase transformations and mechanical properties of advanced high-strength steels (AHSS) of third generation produced by thermal cycles similar than those used in a continuous annealing and galvanizing (CAG)...

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Autores principales:	Bryan Y. Navarrete Pino, Antonio A. Torres Castillo, Emmanuel J. Gutiérrez Castañeda, Luis A. Espinosa Zúñiga, Lorena Hernández Hernández, Armando Salinas Rodríguez, Rogelio Deaquino Lara, Rocío Saldaña Garcés, Iván A. Reyes Domínguez, Javier Aguilar Carrillo, Arnoldo Bedolla Jacuinde, Carlos G. Garay Reyes, Roberto Martínez Sánchez
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	advanced high-strength steels microstructure mechanical properties multiple linear regression CCT diagrams Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/08f7cf3ffb734ceebdb00a9ce72d637e
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spelling	oai:doaj.org-article:08f7cf3ffb734ceebdb00a9ce72d637e2021-11-25T18:21:47ZUsing Intercritical CCT Diagrams and Multiple Linear Regression for the Development of Low-Alloyed Advanced High-Strength Steels10.3390/met111117682075-4701https://doaj.org/article/08f7cf3ffb734ceebdb00a9ce72d637e2021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1768https://doaj.org/toc/2075-4701The present work presents a theoretical and experimental study regarding the microstructure, phase transformations and mechanical properties of advanced high-strength steels (AHSS) of third generation produced by thermal cycles similar than those used in a continuous annealing and galvanizing (CAG) process. The evolution of microstructure and phase transformations were discussed from the behavior of intercritical continuous cooling transformation diagrams calculated with the software JMatPro, and further characterization of the steel by scanning electron microscopy, optical microscopy and dilatometry. Mechanical properties were estimated with a mathematical model obtained as a function of the alloying elements concentrations by multiple linear regression, and then compared to the experimental mechanical properties determined by uniaxial tensile tests. It was found that AHSS of third generation can be obtained by thermal cycles simulating CAG lines through modifications in chemistry of a commercial AISI-1015 steel, having an ultimate tensile strength of UTS = 1020–1080 MPa and an elongation to fracture of Ef = 21.5–25.3%, and microstructures consisting of a mixture of ferrite phase, bainite microconstituent and retained austenite/martensite islands. The determination coefficient obtained by multiple linear regression for UTS and Ef was R<sup>2</sup> = 0.94 and R<sup>2</sup> = 0.84, respectively. In addition, the percentage error for UTS and Ef was 2.45–7.87% and 1.18–16.27%, respectively. Therefore, the proposed model can be used with a good approximation for the prediction of mechanical properties of low-alloyed AHSS.Bryan Y. Navarrete PinoAntonio A. Torres CastilloEmmanuel J. Gutiérrez CastañedaLuis A. Espinosa ZúñigaLorena Hernández HernándezArmando Salinas RodríguezRogelio Deaquino LaraRocío Saldaña GarcésIván A. Reyes DomínguezJavier Aguilar CarrilloArnoldo Bedolla JacuindeCarlos G. Garay ReyesRoberto Martínez SánchezMDPI AGarticleadvanced high-strength steelsmicrostructuremechanical propertiesmultiple linear regressionCCT diagramsMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1768, p 1768 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	advanced high-strength steels microstructure mechanical properties multiple linear regression CCT diagrams Mining engineering. Metallurgy TN1-997
spellingShingle	advanced high-strength steels microstructure mechanical properties multiple linear regression CCT diagrams Mining engineering. Metallurgy TN1-997 Bryan Y. Navarrete Pino Antonio A. Torres Castillo Emmanuel J. Gutiérrez Castañeda Luis A. Espinosa Zúñiga Lorena Hernández Hernández Armando Salinas Rodríguez Rogelio Deaquino Lara Rocío Saldaña Garcés Iván A. Reyes Domínguez Javier Aguilar Carrillo Arnoldo Bedolla Jacuinde Carlos G. Garay Reyes Roberto Martínez Sánchez Using Intercritical CCT Diagrams and Multiple Linear Regression for the Development of Low-Alloyed Advanced High-Strength Steels
description	The present work presents a theoretical and experimental study regarding the microstructure, phase transformations and mechanical properties of advanced high-strength steels (AHSS) of third generation produced by thermal cycles similar than those used in a continuous annealing and galvanizing (CAG) process. The evolution of microstructure and phase transformations were discussed from the behavior of intercritical continuous cooling transformation diagrams calculated with the software JMatPro, and further characterization of the steel by scanning electron microscopy, optical microscopy and dilatometry. Mechanical properties were estimated with a mathematical model obtained as a function of the alloying elements concentrations by multiple linear regression, and then compared to the experimental mechanical properties determined by uniaxial tensile tests. It was found that AHSS of third generation can be obtained by thermal cycles simulating CAG lines through modifications in chemistry of a commercial AISI-1015 steel, having an ultimate tensile strength of UTS = 1020–1080 MPa and an elongation to fracture of Ef = 21.5–25.3%, and microstructures consisting of a mixture of ferrite phase, bainite microconstituent and retained austenite/martensite islands. The determination coefficient obtained by multiple linear regression for UTS and Ef was R<sup>2</sup> = 0.94 and R<sup>2</sup> = 0.84, respectively. In addition, the percentage error for UTS and Ef was 2.45–7.87% and 1.18–16.27%, respectively. Therefore, the proposed model can be used with a good approximation for the prediction of mechanical properties of low-alloyed AHSS.
format	article
author	Bryan Y. Navarrete Pino Antonio A. Torres Castillo Emmanuel J. Gutiérrez Castañeda Luis A. Espinosa Zúñiga Lorena Hernández Hernández Armando Salinas Rodríguez Rogelio Deaquino Lara Rocío Saldaña Garcés Iván A. Reyes Domínguez Javier Aguilar Carrillo Arnoldo Bedolla Jacuinde Carlos G. Garay Reyes Roberto Martínez Sánchez
author_facet	Bryan Y. Navarrete Pino Antonio A. Torres Castillo Emmanuel J. Gutiérrez Castañeda Luis A. Espinosa Zúñiga Lorena Hernández Hernández Armando Salinas Rodríguez Rogelio Deaquino Lara Rocío Saldaña Garcés Iván A. Reyes Domínguez Javier Aguilar Carrillo Arnoldo Bedolla Jacuinde Carlos G. Garay Reyes Roberto Martínez Sánchez
author_sort	Bryan Y. Navarrete Pino
title	Using Intercritical CCT Diagrams and Multiple Linear Regression for the Development of Low-Alloyed Advanced High-Strength Steels
title_short	Using Intercritical CCT Diagrams and Multiple Linear Regression for the Development of Low-Alloyed Advanced High-Strength Steels
title_full	Using Intercritical CCT Diagrams and Multiple Linear Regression for the Development of Low-Alloyed Advanced High-Strength Steels
title_fullStr	Using Intercritical CCT Diagrams and Multiple Linear Regression for the Development of Low-Alloyed Advanced High-Strength Steels
title_full_unstemmed	Using Intercritical CCT Diagrams and Multiple Linear Regression for the Development of Low-Alloyed Advanced High-Strength Steels
title_sort	using intercritical cct diagrams and multiple linear regression for the development of low-alloyed advanced high-strength steels
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/08f7cf3ffb734ceebdb00a9ce72d637e
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Using Intercritical CCT Diagrams and Multiple Linear Regression for the Development of Low-Alloyed Advanced High-Strength Steels

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