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Effects of different processing parameters on the semisolid microstructure of Al6061 produced by a direct thermal method

The effect of different processing parameters consist of pouring temperature and holding time on the semisolid microstructure of Al6061 feedstock billet produced by direct thermal method has been investigated in the present paper. In this experimental works, molten aluminium alloy 6061 was poured in...

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Main Authors:	M. F. M., Tajudin, Asnul Hadi, Ahmad, Mohd Rashidi, Maarof
Format:	Conference or Workshop Item
Language:	English
Published:	IOP Publishing Ltd 2021
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/30759/1/Effects%20of%20different%20processing%20parameters%20on%20the%20semisolid%20microstructure%20of%20Al6061%20produced%20by%20a%20direct%20thermal%20method%20%281%29.docx http://umpir.ump.edu.my/id/eprint/30759/ https://doi.org/10.1088/1757-899X/1092/1/012008
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spelling	my.ump.umpir.307592021-04-15T02:58:20Z http://umpir.ump.edu.my/id/eprint/30759/ Effects of different processing parameters on the semisolid microstructure of Al6061 produced by a direct thermal method M. F. M., Tajudin Asnul Hadi, Ahmad Mohd Rashidi, Maarof TJ Mechanical engineering and machinery The effect of different processing parameters consist of pouring temperature and holding time on the semisolid microstructure of Al6061 feedstock billet produced by direct thermal method has been investigated in the present paper. In this experimental works, molten aluminium alloy 6061 was poured into a thin cylindrical copper mould at a constant temperature of 660 °C and held at different holding times of 20 s, 40 s, and 60 s. After it reached the desired holding time, the copper mould was then quenched into room temperature water. The microstructure formation of feedstock billets was characterized after the feedstock billets were taken out from the mould. Results show that, due to the rapid cooling condition of the molten 6061 inside the copper mould, more globular microstructures were obtained. The sample produced with a pouring temperature of 660 °C and holding time of 20 s, globular microstructure were apparent. Simultaneously, the sample with a pouring temperature of 660 °C and a holding time of 20 s produced smaller grain size than the sample with a pouring temperature of 660 °C and a holding time of 40 s and 60 s. Based on the results, the globular microstructures were superior at a shorter holding time, which allowed them to be quenched faster into room temperature water. The results from this experimental works suggest that the DTM feedstock billet globular microstructure formation merely depended on the heat convection of the molten alloy out from the copper mould. The faster heat convection out from the molten alloy which retarded the formation of dendritic microstructure thus transformed it into a globular microstructure for semisolid metal processing IOP Publishing Ltd 2021 Conference or Workshop Item NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/30759/1/Effects%20of%20different%20processing%20parameters%20on%20the%20semisolid%20microstructure%20of%20Al6061%20produced%20by%20a%20direct%20thermal%20method%20%281%29.docx M. F. M., Tajudin and Asnul Hadi, Ahmad and Mohd Rashidi, Maarof (2021) Effects of different processing parameters on the semisolid microstructure of Al6061 produced by a direct thermal method. In: International Conference on Innovative Technology, Engineering and Sciences (ICTES 2020), 22 December 2020 , Virtual mode, Universiti Malaysia Pahang, Malaysia. . https://doi.org/10.1088/1757-899X/1092/1/012008
institution	Universiti Malaysia Pahang
building	UMP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Pahang
content_source	UMP Institutional Repository
url_provider	http://umpir.ump.edu.my/
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery M. F. M., Tajudin Asnul Hadi, Ahmad Mohd Rashidi, Maarof Effects of different processing parameters on the semisolid microstructure of Al6061 produced by a direct thermal method
description	The effect of different processing parameters consist of pouring temperature and holding time on the semisolid microstructure of Al6061 feedstock billet produced by direct thermal method has been investigated in the present paper. In this experimental works, molten aluminium alloy 6061 was poured into a thin cylindrical copper mould at a constant temperature of 660 °C and held at different holding times of 20 s, 40 s, and 60 s. After it reached the desired holding time, the copper mould was then quenched into room temperature water. The microstructure formation of feedstock billets was characterized after the feedstock billets were taken out from the mould. Results show that, due to the rapid cooling condition of the molten 6061 inside the copper mould, more globular microstructures were obtained. The sample produced with a pouring temperature of 660 °C and holding time of 20 s, globular microstructure were apparent. Simultaneously, the sample with a pouring temperature of 660 °C and a holding time of 20 s produced smaller grain size than the sample with a pouring temperature of 660 °C and a holding time of 40 s and 60 s. Based on the results, the globular microstructures were superior at a shorter holding time, which allowed them to be quenched faster into room temperature water. The results from this experimental works suggest that the DTM feedstock billet globular microstructure formation merely depended on the heat convection of the molten alloy out from the copper mould. The faster heat convection out from the molten alloy which retarded the formation of dendritic microstructure thus transformed it into a globular microstructure for semisolid metal processing
format	Conference or Workshop Item
author	M. F. M., Tajudin Asnul Hadi, Ahmad Mohd Rashidi, Maarof
author_facet	M. F. M., Tajudin Asnul Hadi, Ahmad Mohd Rashidi, Maarof
author_sort	M. F. M., Tajudin
title	Effects of different processing parameters on the semisolid microstructure of Al6061 produced by a direct thermal method
title_short	Effects of different processing parameters on the semisolid microstructure of Al6061 produced by a direct thermal method
title_full	Effects of different processing parameters on the semisolid microstructure of Al6061 produced by a direct thermal method
title_fullStr	Effects of different processing parameters on the semisolid microstructure of Al6061 produced by a direct thermal method
title_full_unstemmed	Effects of different processing parameters on the semisolid microstructure of Al6061 produced by a direct thermal method
title_sort	effects of different processing parameters on the semisolid microstructure of al6061 produced by a direct thermal method
publisher	IOP Publishing Ltd
publishDate	2021
url	http://umpir.ump.edu.my/id/eprint/30759/1/Effects%20of%20different%20processing%20parameters%20on%20the%20semisolid%20microstructure%20of%20Al6061%20produced%20by%20a%20direct%20thermal%20method%20%281%29.docx http://umpir.ump.edu.my/id/eprint/30759/ https://doi.org/10.1088/1757-899X/1092/1/012008
_version_	1698697125118869504
score	13.211869

Effects of different processing parameters on the semisolid microstructure of Al6061 produced by a direct thermal method

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