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Effect of Cold Rolling on Microstructural and Mechanical Properties of a Dual-Phase Steel for Automotive Field

A new advanced dual-phase (DP) steel characterized by ferrite and bainite presence in equal fractions has been studied within this paper. The anisotropy change of this steel was assessed as a progressively more severe cold rolling process was introduced. Specifically, tensile tests were used to buil...

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Autores principales: Bassini, Emilio, Marchese, Giulio, Sivo, Antonio, Martelli, Pietro Antonio, Gullino, Alessio, Ugues, Daniele
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9659092/
https://www.ncbi.nlm.nih.gov/pubmed/36363071
http://dx.doi.org/10.3390/ma15217482
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author Bassini, Emilio
Marchese, Giulio
Sivo, Antonio
Martelli, Pietro Antonio
Gullino, Alessio
Ugues, Daniele
author_facet Bassini, Emilio
Marchese, Giulio
Sivo, Antonio
Martelli, Pietro Antonio
Gullino, Alessio
Ugues, Daniele
author_sort Bassini, Emilio
collection PubMed
description A new advanced dual-phase (DP) steel characterized by ferrite and bainite presence in equal fractions has been studied within this paper. The anisotropy change of this steel was assessed as a progressively more severe cold rolling process was introduced. Specifically, tensile tests were used to build a strain-hardening curve, which describes the evolution of this DP steel’s mechanical properties as the thinning level increases from 20 to 70% with 10% step increments. As expected, the cold rolling process increases mechanical properties, profoundly altering the material’s microstructure, which was assessed in depth using Electron Backscatter Diffraction (EBSD) analysis coupled with the Kernel Average Misorientation (KAM) maps. At the same time, the process strongly modifies the material planar anisotropy. Microstructural and mechanical assessment and the Kocks–Mecking model applied to this steel evidenced that a 50% strain hardening makes the DP steel isotropic. The material retains or resumes anisotropic behavior for a lower or higher degree of deformation. Furthermore, the paper evaluated the forming limit of this DP steel and introduced geometric limitations to testing the thin steel plates’ mechanical properties.
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spelling pubmed-96590922022-11-15 Effect of Cold Rolling on Microstructural and Mechanical Properties of a Dual-Phase Steel for Automotive Field Bassini, Emilio Marchese, Giulio Sivo, Antonio Martelli, Pietro Antonio Gullino, Alessio Ugues, Daniele Materials (Basel) Article A new advanced dual-phase (DP) steel characterized by ferrite and bainite presence in equal fractions has been studied within this paper. The anisotropy change of this steel was assessed as a progressively more severe cold rolling process was introduced. Specifically, tensile tests were used to build a strain-hardening curve, which describes the evolution of this DP steel’s mechanical properties as the thinning level increases from 20 to 70% with 10% step increments. As expected, the cold rolling process increases mechanical properties, profoundly altering the material’s microstructure, which was assessed in depth using Electron Backscatter Diffraction (EBSD) analysis coupled with the Kernel Average Misorientation (KAM) maps. At the same time, the process strongly modifies the material planar anisotropy. Microstructural and mechanical assessment and the Kocks–Mecking model applied to this steel evidenced that a 50% strain hardening makes the DP steel isotropic. The material retains or resumes anisotropic behavior for a lower or higher degree of deformation. Furthermore, the paper evaluated the forming limit of this DP steel and introduced geometric limitations to testing the thin steel plates’ mechanical properties. MDPI 2022-10-25 /pmc/articles/PMC9659092/ /pubmed/36363071 http://dx.doi.org/10.3390/ma15217482 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bassini, Emilio
Marchese, Giulio
Sivo, Antonio
Martelli, Pietro Antonio
Gullino, Alessio
Ugues, Daniele
Effect of Cold Rolling on Microstructural and Mechanical Properties of a Dual-Phase Steel for Automotive Field
title Effect of Cold Rolling on Microstructural and Mechanical Properties of a Dual-Phase Steel for Automotive Field
title_full Effect of Cold Rolling on Microstructural and Mechanical Properties of a Dual-Phase Steel for Automotive Field
title_fullStr Effect of Cold Rolling on Microstructural and Mechanical Properties of a Dual-Phase Steel for Automotive Field
title_full_unstemmed Effect of Cold Rolling on Microstructural and Mechanical Properties of a Dual-Phase Steel for Automotive Field
title_short Effect of Cold Rolling on Microstructural and Mechanical Properties of a Dual-Phase Steel for Automotive Field
title_sort effect of cold rolling on microstructural and mechanical properties of a dual-phase steel for automotive field
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9659092/
https://www.ncbi.nlm.nih.gov/pubmed/36363071
http://dx.doi.org/10.3390/ma15217482
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