Effect of Grain Refinement on the Dynamic, Mechanical Properties, and Corrosion Behaviour of Al-Mg Alloy

In this investigation, aluminium Al-2.5% Mg cast alloy was modified by adding 0.5 Ti and 0.1 B wt % modifiers to investigate their impact on the dynamic behaviour, as well as the mechanical and microstructure properties. The dynamic properties were analysed experimentally using a free vibration impa...

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Autores principales:	Haitham M. Ahmed, Hussin A. M. Ahmed, Mohammed Hefni, Essam B. Moustafa
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Al-Mg alloy Ti-B modifiers dynamic mechanical corrosion hardness Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/dadbfd04c01d48fd8ac90a15b6b0f607
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spelling	oai:doaj.org-article:dadbfd04c01d48fd8ac90a15b6b0f6072021-11-25T18:22:13ZEffect of Grain Refinement on the Dynamic, Mechanical Properties, and Corrosion Behaviour of Al-Mg Alloy10.3390/met111118252075-4701https://doaj.org/article/dadbfd04c01d48fd8ac90a15b6b0f6072021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1825https://doaj.org/toc/2075-4701In this investigation, aluminium Al-2.5% Mg cast alloy was modified by adding 0.5 Ti and 0.1 B wt % modifiers to investigate their impact on the dynamic behaviour, as well as the mechanical and microstructure properties. The dynamic properties were analysed experimentally using a free vibration impact test and predicted using finite element methods. This study used a high-resolution polarised optical microscope to analyse the microstructure of the studied alloys and X-ray Powder Diffraction (XRD) analysis to determine the developed phases. Microstructure and mechanical properties were mostly enhanced as a result of grain refining during solidification and through the metal segregation process. The microstructure analysis of the modified alloy showed a significant improvement in the grain refinement; hence, the grains were 10 times finer than the cast alloy. The modified Al-2.5% Mg/Ti-B alloy demonstrated reduced inter-granular corrosion (IGC) than the Al-2.5% Mg standard cast alloy. By incorporating Ti-B modifiers into the composition of the cast Al-Mg alloy, the ultimate tensile strength (UTS), strain (ε), and hardness values (HV) were increased by 30.5%, 100%, and 18.18%, respectively. The dynamic properties of the modified alloy showed an enhancement in the resonant (<i>f<sub>n</sub></i>) and damping ratio (ζ) by 7% and 68%, respectively. The predicted resonance frequencies of the investigated alloys showed results close to the experimental dynamic tests.Haitham M. AhmedHussin A. M. AhmedMohammed HefniEssam B. MoustafaMDPI AGarticleAl-Mg alloyTi-B modifiersdynamicmechanicalcorrosionhardnessMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1825, p 1825 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Al-Mg alloy Ti-B modifiers dynamic mechanical corrosion hardness Mining engineering. Metallurgy TN1-997
spellingShingle	Al-Mg alloy Ti-B modifiers dynamic mechanical corrosion hardness Mining engineering. Metallurgy TN1-997 Haitham M. Ahmed Hussin A. M. Ahmed Mohammed Hefni Essam B. Moustafa Effect of Grain Refinement on the Dynamic, Mechanical Properties, and Corrosion Behaviour of Al-Mg Alloy
description	In this investigation, aluminium Al-2.5% Mg cast alloy was modified by adding 0.5 Ti and 0.1 B wt % modifiers to investigate their impact on the dynamic behaviour, as well as the mechanical and microstructure properties. The dynamic properties were analysed experimentally using a free vibration impact test and predicted using finite element methods. This study used a high-resolution polarised optical microscope to analyse the microstructure of the studied alloys and X-ray Powder Diffraction (XRD) analysis to determine the developed phases. Microstructure and mechanical properties were mostly enhanced as a result of grain refining during solidification and through the metal segregation process. The microstructure analysis of the modified alloy showed a significant improvement in the grain refinement; hence, the grains were 10 times finer than the cast alloy. The modified Al-2.5% Mg/Ti-B alloy demonstrated reduced inter-granular corrosion (IGC) than the Al-2.5% Mg standard cast alloy. By incorporating Ti-B modifiers into the composition of the cast Al-Mg alloy, the ultimate tensile strength (UTS), strain (ε), and hardness values (HV) were increased by 30.5%, 100%, and 18.18%, respectively. The dynamic properties of the modified alloy showed an enhancement in the resonant (<i>f<sub>n</sub></i>) and damping ratio (ζ) by 7% and 68%, respectively. The predicted resonance frequencies of the investigated alloys showed results close to the experimental dynamic tests.
format	article
author	Haitham M. Ahmed Hussin A. M. Ahmed Mohammed Hefni Essam B. Moustafa
author_facet	Haitham M. Ahmed Hussin A. M. Ahmed Mohammed Hefni Essam B. Moustafa
author_sort	Haitham M. Ahmed
title	Effect of Grain Refinement on the Dynamic, Mechanical Properties, and Corrosion Behaviour of Al-Mg Alloy
title_short	Effect of Grain Refinement on the Dynamic, Mechanical Properties, and Corrosion Behaviour of Al-Mg Alloy
title_full	Effect of Grain Refinement on the Dynamic, Mechanical Properties, and Corrosion Behaviour of Al-Mg Alloy
title_fullStr	Effect of Grain Refinement on the Dynamic, Mechanical Properties, and Corrosion Behaviour of Al-Mg Alloy
title_full_unstemmed	Effect of Grain Refinement on the Dynamic, Mechanical Properties, and Corrosion Behaviour of Al-Mg Alloy
title_sort	effect of grain refinement on the dynamic, mechanical properties, and corrosion behaviour of al-mg alloy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/dadbfd04c01d48fd8ac90a15b6b0f607
work_keys_str_mv	AT haithammahmed effectofgrainrefinementonthedynamicmechanicalpropertiesandcorrosionbehaviourofalmgalloy AT hussinamahmed effectofgrainrefinementonthedynamicmechanicalpropertiesandcorrosionbehaviourofalmgalloy AT mohammedhefni effectofgrainrefinementonthedynamicmechanicalpropertiesandcorrosionbehaviourofalmgalloy AT essambmoustafa effectofgrainrefinementonthedynamicmechanicalpropertiesandcorrosionbehaviourofalmgalloy
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Effect of Grain Refinement on the Dynamic, Mechanical Properties, and Corrosion Behaviour of Al-Mg Alloy

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