Surface Integrity and Corrosion Resistance of 42CrMo4 High-Strength Steel Strengthened by Hard Turning

To improve the surface corrosion resistance of 42CrMo4 high-strength steel used in a marine environment, this article studied the effects of hard turning on the surface integrity and corrosion resistance of 42CrMo4 high-strength steel through the single factor experimental method, namely hard turnin...

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Autores principales:	Qingzhong Xu, Yan Liu, Haiyang Lu, Jichen Liu, Gangjun Cai
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hard cutting surface integrity corrosion resistance 42CrMo4 steel 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/da460b6929fa4a43ac91b981c90392b0
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spelling	oai:doaj.org-article:da460b6929fa4a43ac91b981c90392b02021-11-25T18:15:33ZSurface Integrity and Corrosion Resistance of 42CrMo4 High-Strength Steel Strengthened by Hard Turning10.3390/ma142269951996-1944https://doaj.org/article/da460b6929fa4a43ac91b981c90392b02021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6995https://doaj.org/toc/1996-1944To improve the surface corrosion resistance of 42CrMo4 high-strength steel used in a marine environment, this article studied the effects of hard turning on the surface integrity and corrosion resistance of 42CrMo4 high-strength steel through the single factor experimental method, namely hard turning, polarization corrosion, electrochemical impedance spectroscopy, potentiodynamic polarization curve, and salt spray tests. The results indicated that the surface integrity was modified by the hard turning, with a surface roughness lower than <i>Ra</i> 0.8 μm, decreased surface microhardness, fine and uniform surface microstructure, and dominant surface residual compressive stress. The hard turning process was feasible to strengthen the surface corrosion resistance of 42CrMo4 high-strength steel. The better corrosion resistance of the surface layer than that of the substrate material can be ascribed to the uniform carbides and compact microstructure. The corrosion resistance varied with cutting speeds as a result of the changed surface microhardness and residual compressive stress, varied with feed rates as a result of the changed surface roughness, and varied with cutting depths as a result of the changed surface residual compressive stress, respectively. The surface integrity with smaller surface roughness and microhardness and bigger surface residual compressive stress was beneficial for corrosion resistance.Qingzhong XuYan LiuHaiyang LuJichen LiuGangjun CaiMDPI AGarticlehard cuttingsurface integritycorrosion resistance42CrMo4 steelTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6995, p 6995 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hard cutting surface integrity corrosion resistance 42CrMo4 steel 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	hard cutting surface integrity corrosion resistance 42CrMo4 steel 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 Qingzhong Xu Yan Liu Haiyang Lu Jichen Liu Gangjun Cai Surface Integrity and Corrosion Resistance of 42CrMo4 High-Strength Steel Strengthened by Hard Turning
description	To improve the surface corrosion resistance of 42CrMo4 high-strength steel used in a marine environment, this article studied the effects of hard turning on the surface integrity and corrosion resistance of 42CrMo4 high-strength steel through the single factor experimental method, namely hard turning, polarization corrosion, electrochemical impedance spectroscopy, potentiodynamic polarization curve, and salt spray tests. The results indicated that the surface integrity was modified by the hard turning, with a surface roughness lower than <i>Ra</i> 0.8 μm, decreased surface microhardness, fine and uniform surface microstructure, and dominant surface residual compressive stress. The hard turning process was feasible to strengthen the surface corrosion resistance of 42CrMo4 high-strength steel. The better corrosion resistance of the surface layer than that of the substrate material can be ascribed to the uniform carbides and compact microstructure. The corrosion resistance varied with cutting speeds as a result of the changed surface microhardness and residual compressive stress, varied with feed rates as a result of the changed surface roughness, and varied with cutting depths as a result of the changed surface residual compressive stress, respectively. The surface integrity with smaller surface roughness and microhardness and bigger surface residual compressive stress was beneficial for corrosion resistance.
format	article
author	Qingzhong Xu Yan Liu Haiyang Lu Jichen Liu Gangjun Cai
author_facet	Qingzhong Xu Yan Liu Haiyang Lu Jichen Liu Gangjun Cai
author_sort	Qingzhong Xu
title	Surface Integrity and Corrosion Resistance of 42CrMo4 High-Strength Steel Strengthened by Hard Turning
title_short	Surface Integrity and Corrosion Resistance of 42CrMo4 High-Strength Steel Strengthened by Hard Turning
title_full	Surface Integrity and Corrosion Resistance of 42CrMo4 High-Strength Steel Strengthened by Hard Turning
title_fullStr	Surface Integrity and Corrosion Resistance of 42CrMo4 High-Strength Steel Strengthened by Hard Turning
title_full_unstemmed	Surface Integrity and Corrosion Resistance of 42CrMo4 High-Strength Steel Strengthened by Hard Turning
title_sort	surface integrity and corrosion resistance of 42crmo4 high-strength steel strengthened by hard turning
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/da460b6929fa4a43ac91b981c90392b0
work_keys_str_mv	AT qingzhongxu surfaceintegrityandcorrosionresistanceof42crmo4highstrengthsteelstrengthenedbyhardturning AT yanliu surfaceintegrityandcorrosionresistanceof42crmo4highstrengthsteelstrengthenedbyhardturning AT haiyanglu surfaceintegrityandcorrosionresistanceof42crmo4highstrengthsteelstrengthenedbyhardturning AT jichenliu surfaceintegrityandcorrosionresistanceof42crmo4highstrengthsteelstrengthenedbyhardturning AT gangjuncai surfaceintegrityandcorrosionresistanceof42crmo4highstrengthsteelstrengthenedbyhardturning
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Surface Integrity and Corrosion Resistance of 42CrMo4 High-Strength Steel Strengthened by Hard Turning

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