Modification of Surface and Subsurface Properties of AA1050 Alloy by Shot Peening

AA1050 Al alloy samples were shot-peened using stainless-steel shots at shot peening (SP) pressures of 0.1 and 0.5 MPa and surface cover rates of 100% and 1000% using a custom-designed SP system. The hardness of shot-peened samples was around twice that of unpeened samples. Hardness increased with p...

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Autores principales:	Yasemin Yıldıran Avcu, Berkay Gönül, Okan Yetik, Fikret Sönmez, Abdulkadir Cengiz, Mert Guney, Egemen Avcu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	crack growth mechanical behaviour plastic deformation shot peening soft metals 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/ef36cc4aaafc473e896394bd50a21f95
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spelling	oai:doaj.org-article:ef36cc4aaafc473e896394bd50a21f952021-11-11T18:07:35ZModification of Surface and Subsurface Properties of AA1050 Alloy by Shot Peening10.3390/ma142165751996-1944https://doaj.org/article/ef36cc4aaafc473e896394bd50a21f952021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6575https://doaj.org/toc/1996-1944AA1050 Al alloy samples were shot-peened using stainless-steel shots at shot peening (SP) pressures of 0.1 and 0.5 MPa and surface cover rates of 100% and 1000% using a custom-designed SP system. The hardness of shot-peened samples was around twice that of unpeened samples. Hardness increased with peening pressure, whereas the higher cover rate did not lead to hardness improvement. Micro-crack formation and embedment of shots occurred by SP, while average surface roughness increased up to 9 µm at the higher peening pressure and cover rate, indicating surface deterioration. The areal coverage of the embedded shots ranged from 1% to 5% depending on the peening parameters, and the number and the mean size of the embedded shots increased at the higher SP pressure and cover rate. As evidenced and discussed through the surface and cross-sectional SEM images, the main deformation mechanisms during SP were schematically described as crater formation, folding, micro-crack formation, and material removal. Overall, shot-peened samples demonstrated improved mechanical properties, whereas sample surface integrity only deteriorated notably during SP at the higher pressure, suggesting that selecting optimal peening parameters is key to the safe use of SP. The implemented methodology can be used to modify similar soft alloys within confined compromises in surface features.Yasemin Yıldıran AvcuBerkay GönülOkan YetikFikret SönmezAbdulkadir CengizMert GuneyEgemen AvcuMDPI AGarticlecrack growthmechanical behaviourplastic deformationshot peeningsoft metalsTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6575, p 6575 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	crack growth mechanical behaviour plastic deformation shot peening soft metals 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	crack growth mechanical behaviour plastic deformation shot peening soft metals 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 Yasemin Yıldıran Avcu Berkay Gönül Okan Yetik Fikret Sönmez Abdulkadir Cengiz Mert Guney Egemen Avcu Modification of Surface and Subsurface Properties of AA1050 Alloy by Shot Peening
description	AA1050 Al alloy samples were shot-peened using stainless-steel shots at shot peening (SP) pressures of 0.1 and 0.5 MPa and surface cover rates of 100% and 1000% using a custom-designed SP system. The hardness of shot-peened samples was around twice that of unpeened samples. Hardness increased with peening pressure, whereas the higher cover rate did not lead to hardness improvement. Micro-crack formation and embedment of shots occurred by SP, while average surface roughness increased up to 9 µm at the higher peening pressure and cover rate, indicating surface deterioration. The areal coverage of the embedded shots ranged from 1% to 5% depending on the peening parameters, and the number and the mean size of the embedded shots increased at the higher SP pressure and cover rate. As evidenced and discussed through the surface and cross-sectional SEM images, the main deformation mechanisms during SP were schematically described as crater formation, folding, micro-crack formation, and material removal. Overall, shot-peened samples demonstrated improved mechanical properties, whereas sample surface integrity only deteriorated notably during SP at the higher pressure, suggesting that selecting optimal peening parameters is key to the safe use of SP. The implemented methodology can be used to modify similar soft alloys within confined compromises in surface features.
format	article
author	Yasemin Yıldıran Avcu Berkay Gönül Okan Yetik Fikret Sönmez Abdulkadir Cengiz Mert Guney Egemen Avcu
author_facet	Yasemin Yıldıran Avcu Berkay Gönül Okan Yetik Fikret Sönmez Abdulkadir Cengiz Mert Guney Egemen Avcu
author_sort	Yasemin Yıldıran Avcu
title	Modification of Surface and Subsurface Properties of AA1050 Alloy by Shot Peening
title_short	Modification of Surface and Subsurface Properties of AA1050 Alloy by Shot Peening
title_full	Modification of Surface and Subsurface Properties of AA1050 Alloy by Shot Peening
title_fullStr	Modification of Surface and Subsurface Properties of AA1050 Alloy by Shot Peening
title_full_unstemmed	Modification of Surface and Subsurface Properties of AA1050 Alloy by Shot Peening
title_sort	modification of surface and subsurface properties of aa1050 alloy by shot peening
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ef36cc4aaafc473e896394bd50a21f95
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Modification of Surface and Subsurface Properties of AA1050 Alloy by Shot Peening

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