Microstructure Evolution and Mechanical Properties of Medium Carbon Martensitic Steel during Warm Rolling and Annealing Process

The microstructure evolution and mechanical properties of medium carbon martensitic steel during the warm rolling and annealing process were studied by scanning electron microscope (SEM), electron back scattering diffraction (EBSD), and electronic universal testing machine. The results showed that t...

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Autores principales:	Guolong Liu, Jingbao Liu, Jie Zhang, Minghe Zhang, Yunli Feng
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	medium carbon martensitic steel warm rolling annealing microstructure mechanical properties Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/76ff1789d3404da2914f16374d97311f
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spelling	oai:doaj.org-article:76ff1789d3404da2914f16374d97311f2021-11-25T18:14:34ZMicrostructure Evolution and Mechanical Properties of Medium Carbon Martensitic Steel during Warm Rolling and Annealing Process10.3390/ma142269001996-1944https://doaj.org/article/76ff1789d3404da2914f16374d97311f2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6900https://doaj.org/toc/1996-1944The microstructure evolution and mechanical properties of medium carbon martensitic steel during the warm rolling and annealing process were studied by scanning electron microscope (SEM), electron back scattering diffraction (EBSD), and electronic universal testing machine. The results showed that the microstructure of ferrite matrix with mass dispersive cementite particles was obtained by decomposition of martensitic in medium-carbon martensitic steel after warm rolling. The grain size of ferrite was ~0.53 μm, the yield strength and tensile strength were 951 MPa and 968 MPa, respectively, and the total elongation rate was 11.5% after warm rolling at 600 °C. Additionally, after the next 4 h of annealing, the grain size of ferrite and particle size of cementite increased to ~1.35 μm and ~360 nm and the yield strength and tensile strength decreased to 600 MPa and 645 MPa, respectively, with a total elongation increases of 20.9%. The strength of the material increased with increasing strain rate in tension, and the yield-to-tensile strength ratio increased from 0.92 to 0.94 and maintained good plasticity.Guolong LiuJingbao LiuJie ZhangMinghe ZhangYunli FengMDPI AGarticlemedium carbon martensitic steelwarm rollingannealingmicrostructuremechanical propertiesTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6900, p 6900 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	medium carbon martensitic steel warm rolling annealing microstructure mechanical properties Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	medium carbon martensitic steel warm rolling annealing microstructure mechanical properties Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Guolong Liu Jingbao Liu Jie Zhang Minghe Zhang Yunli Feng Microstructure Evolution and Mechanical Properties of Medium Carbon Martensitic Steel during Warm Rolling and Annealing Process
description	The microstructure evolution and mechanical properties of medium carbon martensitic steel during the warm rolling and annealing process were studied by scanning electron microscope (SEM), electron back scattering diffraction (EBSD), and electronic universal testing machine. The results showed that the microstructure of ferrite matrix with mass dispersive cementite particles was obtained by decomposition of martensitic in medium-carbon martensitic steel after warm rolling. The grain size of ferrite was ~0.53 μm, the yield strength and tensile strength were 951 MPa and 968 MPa, respectively, and the total elongation rate was 11.5% after warm rolling at 600 °C. Additionally, after the next 4 h of annealing, the grain size of ferrite and particle size of cementite increased to ~1.35 μm and ~360 nm and the yield strength and tensile strength decreased to 600 MPa and 645 MPa, respectively, with a total elongation increases of 20.9%. The strength of the material increased with increasing strain rate in tension, and the yield-to-tensile strength ratio increased from 0.92 to 0.94 and maintained good plasticity.
format	article
author	Guolong Liu Jingbao Liu Jie Zhang Minghe Zhang Yunli Feng
author_facet	Guolong Liu Jingbao Liu Jie Zhang Minghe Zhang Yunli Feng
author_sort	Guolong Liu
title	Microstructure Evolution and Mechanical Properties of Medium Carbon Martensitic Steel during Warm Rolling and Annealing Process
title_short	Microstructure Evolution and Mechanical Properties of Medium Carbon Martensitic Steel during Warm Rolling and Annealing Process
title_full	Microstructure Evolution and Mechanical Properties of Medium Carbon Martensitic Steel during Warm Rolling and Annealing Process
title_fullStr	Microstructure Evolution and Mechanical Properties of Medium Carbon Martensitic Steel during Warm Rolling and Annealing Process
title_full_unstemmed	Microstructure Evolution and Mechanical Properties of Medium Carbon Martensitic Steel during Warm Rolling and Annealing Process
title_sort	microstructure evolution and mechanical properties of medium carbon martensitic steel during warm rolling and annealing process
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/76ff1789d3404da2914f16374d97311f
work_keys_str_mv	AT guolongliu microstructureevolutionandmechanicalpropertiesofmediumcarbonmartensiticsteelduringwarmrollingandannealingprocess AT jingbaoliu microstructureevolutionandmechanicalpropertiesofmediumcarbonmartensiticsteelduringwarmrollingandannealingprocess AT jiezhang microstructureevolutionandmechanicalpropertiesofmediumcarbonmartensiticsteelduringwarmrollingandannealingprocess AT minghezhang microstructureevolutionandmechanicalpropertiesofmediumcarbonmartensiticsteelduringwarmrollingandannealingprocess AT yunlifeng microstructureevolutionandmechanicalpropertiesofmediumcarbonmartensiticsteelduringwarmrollingandannealingprocess
_version_	1718411444493484032

Microstructure Evolution and Mechanical Properties of Medium Carbon Martensitic Steel during Warm Rolling and Annealing Process

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