Microstructure and Mechanical Properties of a Cold-Rolled Ultrafine-Grained Dual-Phase Steel

A new processing route to produce Ultrafine-Grained Dual-Phase steel has been proposed, involving cold-rolling and subsequent intercritical annealing of a fibrous ferrite–martensite starting structure. Ultrafine-grained DP (UFG-DP) steel with an average ferrite grain size of about ~2.7 μm and an ave...

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Autores principales: Pan, Zhiyi, Gao, Bo, Lai, Qingquan, Chen, Xuefei, Cao, Yang, Liu, Manping, Zhou, Hao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6119992/
https://www.ncbi.nlm.nih.gov/pubmed/30103410
http://dx.doi.org/10.3390/ma11081399
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author Pan, Zhiyi
Gao, Bo
Lai, Qingquan
Chen, Xuefei
Cao, Yang
Liu, Manping
Zhou, Hao
author_facet Pan, Zhiyi
Gao, Bo
Lai, Qingquan
Chen, Xuefei
Cao, Yang
Liu, Manping
Zhou, Hao
author_sort Pan, Zhiyi
collection PubMed
description A new processing route to produce Ultrafine-Grained Dual-Phase steel has been proposed, involving cold-rolling and subsequent intercritical annealing of a fibrous ferrite–martensite starting structure. Ultrafine-grained DP (UFG-DP) steel with an average ferrite grain size of about ~2.7 μm and an average martensite island size of ~2.9 μm was achieved. Tensile testing revealed superior mechanical properties (the ultimate tensile strength of 1267 MPa and uniform elongation of 8.2%) for the new DP steel in comparison with the fibrous DP steels. The superior mechanical properties are attributed to the influence of microstructure refinement on the work-hardening and fracture behavior.
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spelling pubmed-61199922018-09-05 Microstructure and Mechanical Properties of a Cold-Rolled Ultrafine-Grained Dual-Phase Steel Pan, Zhiyi Gao, Bo Lai, Qingquan Chen, Xuefei Cao, Yang Liu, Manping Zhou, Hao Materials (Basel) Article A new processing route to produce Ultrafine-Grained Dual-Phase steel has been proposed, involving cold-rolling and subsequent intercritical annealing of a fibrous ferrite–martensite starting structure. Ultrafine-grained DP (UFG-DP) steel with an average ferrite grain size of about ~2.7 μm and an average martensite island size of ~2.9 μm was achieved. Tensile testing revealed superior mechanical properties (the ultimate tensile strength of 1267 MPa and uniform elongation of 8.2%) for the new DP steel in comparison with the fibrous DP steels. The superior mechanical properties are attributed to the influence of microstructure refinement on the work-hardening and fracture behavior. MDPI 2018-08-10 /pmc/articles/PMC6119992/ /pubmed/30103410 http://dx.doi.org/10.3390/ma11081399 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Pan, Zhiyi
Gao, Bo
Lai, Qingquan
Chen, Xuefei
Cao, Yang
Liu, Manping
Zhou, Hao
Microstructure and Mechanical Properties of a Cold-Rolled Ultrafine-Grained Dual-Phase Steel
title Microstructure and Mechanical Properties of a Cold-Rolled Ultrafine-Grained Dual-Phase Steel
title_full Microstructure and Mechanical Properties of a Cold-Rolled Ultrafine-Grained Dual-Phase Steel
title_fullStr Microstructure and Mechanical Properties of a Cold-Rolled Ultrafine-Grained Dual-Phase Steel
title_full_unstemmed Microstructure and Mechanical Properties of a Cold-Rolled Ultrafine-Grained Dual-Phase Steel
title_short Microstructure and Mechanical Properties of a Cold-Rolled Ultrafine-Grained Dual-Phase Steel
title_sort microstructure and mechanical properties of a cold-rolled ultrafine-grained dual-phase steel
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6119992/
https://www.ncbi.nlm.nih.gov/pubmed/30103410
http://dx.doi.org/10.3390/ma11081399
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