Novel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass

Surface work hardening is a process of deforming a material surface using a thin layer. It hardens and strengthens the surface while keeping the core relatively soft and ductile to absorb stresses. This study introduces a permanent magnate surface work hardening under two opposite permanent poles of...

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Autores principales:	Ayman M. Alaskari, Abdulaziz I. Albannai, Abdulkareem S. Aloraier, Meshal Y. Alawadhi, Tatiana Liptáková
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	surface work hardening brass permanent magnets microhardness martensitic stainless steel balls 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/9d9931aa7eb4438e9c79eac60e6d2a08
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spelling	oai:doaj.org-article:9d9931aa7eb4438e9c79eac60e6d2a082021-11-11T17:53:00ZNovel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass10.3390/ma142163121996-1944https://doaj.org/article/9d9931aa7eb4438e9c79eac60e6d2a082021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6312https://doaj.org/toc/1996-1944Surface work hardening is a process of deforming a material surface using a thin layer. It hardens and strengthens the surface while keeping the core relatively soft and ductile to absorb stresses. This study introduces a permanent magnate surface work hardening under two opposite permanent poles of a magnet to investigate its influence on a brass surface. The gap between the brass and the north magnet pole—fixed in the spindle of a vertical machine—was filled with martensitic stainless steel balls. The rotational speed and feed rates were 500–1250 rpm and 6–14 mm min<sup>−1</sup>, respectively. The novel method improved the surface hardness for all parameters by up to 112%, in favor of high speed, and also increased yield by approximately 10% compared to ground samples. Surface roughness showed higher values for all speed–feed rate combinations compared to the ground sample. Nevertheless, it showed better roughness than other treated conditions with high and low feed rates. The ultimate tensile strength and ductility remained unchanged for all conditions other than the untreated brass. A factorial design and nonlinear regression analysis were performed to predict the microhardness equation and effectiveness of the independent variable—speed and feed rate—for the proposed process.Ayman M. AlaskariAbdulaziz I. AlbannaiAbdulkareem S. AloraierMeshal Y. AlawadhiTatiana LiptákováMDPI AGarticlesurface work hardeningbrasspermanent magnetsmicrohardnessmartensitic stainless steel ballsTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6312, p 6312 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	surface work hardening brass permanent magnets microhardness martensitic stainless steel balls 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	surface work hardening brass permanent magnets microhardness martensitic stainless steel balls 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 Ayman M. Alaskari Abdulaziz I. Albannai Abdulkareem S. Aloraier Meshal Y. Alawadhi Tatiana Liptáková Novel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass
description	Surface work hardening is a process of deforming a material surface using a thin layer. It hardens and strengthens the surface while keeping the core relatively soft and ductile to absorb stresses. This study introduces a permanent magnate surface work hardening under two opposite permanent poles of a magnet to investigate its influence on a brass surface. The gap between the brass and the north magnet pole—fixed in the spindle of a vertical machine—was filled with martensitic stainless steel balls. The rotational speed and feed rates were 500–1250 rpm and 6–14 mm min<sup>−1</sup>, respectively. The novel method improved the surface hardness for all parameters by up to 112%, in favor of high speed, and also increased yield by approximately 10% compared to ground samples. Surface roughness showed higher values for all speed–feed rate combinations compared to the ground sample. Nevertheless, it showed better roughness than other treated conditions with high and low feed rates. The ultimate tensile strength and ductility remained unchanged for all conditions other than the untreated brass. A factorial design and nonlinear regression analysis were performed to predict the microhardness equation and effectiveness of the independent variable—speed and feed rate—for the proposed process.
format	article
author	Ayman M. Alaskari Abdulaziz I. Albannai Abdulkareem S. Aloraier Meshal Y. Alawadhi Tatiana Liptáková
author_facet	Ayman M. Alaskari Abdulaziz I. Albannai Abdulkareem S. Aloraier Meshal Y. Alawadhi Tatiana Liptáková
author_sort	Ayman M. Alaskari
title	Novel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass
title_short	Novel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass
title_full	Novel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass
title_fullStr	Novel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass
title_full_unstemmed	Novel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass
title_sort	novel permanent magnetic surface work hardening process for 60/40 brass
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9d9931aa7eb4438e9c79eac60e6d2a08
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Novel Permanent Magnetic Surface Work Hardening Process for 60/40 Brass

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