Investigation of pouring temperature and holding time for semisolid metal feedstock production

Semisolid metal (SSM) processing, as a kind of new technology that exploits forming of alloys between solidus and liquidus temperatures, has attracted great attention from investigators for its thixotropic behaviour as well as having advantages in reducing porosity, macrosegregation, and forming for...

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Main Authors:	N. A., Razak, Asnul Hadi, Ahmad, Mohd Rashidi, Maarof
Format:	Conference or Workshop Item
Language:	English
Published:	IOP Publishing Ltd 2017
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/20950/ http://umpir.ump.edu.my/id/eprint/20950/ http://umpir.ump.edu.my/id/eprint/20950/1/Investigation%20of%20pouring%20temperature%20and%20holding%20time%20for%20semisolid.pdf

id	ump-20950
recordtype	eprints
spelling	ump-209502018-07-11T08:15:36Z http://umpir.ump.edu.my/id/eprint/20950/ Investigation of pouring temperature and holding time for semisolid metal feedstock production N. A., Razak Asnul Hadi, Ahmad Mohd Rashidi, Maarof TJ Mechanical engineering and machinery Semisolid metal (SSM) processing, as a kind of new technology that exploits forming of alloys between solidus and liquidus temperatures, has attracted great attention from investigators for its thixotropic behaviour as well as having advantages in reducing porosity, macrosegregation, and forming forces during shaping process. Various techniques are employed to produce feedstock with fine globular microstructures, and direct thermal method is one of them. In this paper, the effect from different pouring temperatures and holding times using a direct thermal method on microstructure and hardness of aluminium alloy 6061 is presented. Molten aluminium alloy 6061 was poured into a cylindrical copper mould and cooled down to the semisolid temperature before being quenched in water at room temperature. The effect of different pouring temperatures of 660 °C, 680 °C, 700 °C, and holding time of 20 s, and 60 s on the microstructure of aluminium alloy 6061 were investigated. From the micrographs, it was found that the most globular structures were achieved at processing parameters of 660 °C pouring temperature and 60 s holding time. The highest density and hardness of the samples were found at the same processing parameters. It can be concluded that the most spheroidal microstructure, the highest density, and the hardness were recorded at lower pouring temperature and longer holding time. IOP Publishing Ltd 2017-11 Conference or Workshop Item PeerReviewed pdf en cc_by http://umpir.ump.edu.my/id/eprint/20950/1/Investigation%20of%20pouring%20temperature%20and%20holding%20time%20for%20semisolid.pdf N. A., Razak and Asnul Hadi, Ahmad and Mohd Rashidi, Maarof (2017) Investigation of pouring temperature and holding time for semisolid metal feedstock production. In: 4th International Conference on Mechanical Engineering Research (ICMER2017), 1–2 August 2017 , Swiss Garden Beach Resort, Kuantan, Pahang, Malaysia. pp. 1-9., 257 (1). ISSN 17578981 http://iopscience.iop.org/article/10.1088/1757-899X/257/1/012085/pdf
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery N. A., Razak Asnul Hadi, Ahmad Mohd Rashidi, Maarof Investigation of pouring temperature and holding time for semisolid metal feedstock production
description	Semisolid metal (SSM) processing, as a kind of new technology that exploits forming of alloys between solidus and liquidus temperatures, has attracted great attention from investigators for its thixotropic behaviour as well as having advantages in reducing porosity, macrosegregation, and forming forces during shaping process. Various techniques are employed to produce feedstock with fine globular microstructures, and direct thermal method is one of them. In this paper, the effect from different pouring temperatures and holding times using a direct thermal method on microstructure and hardness of aluminium alloy 6061 is presented. Molten aluminium alloy 6061 was poured into a cylindrical copper mould and cooled down to the semisolid temperature before being quenched in water at room temperature. The effect of different pouring temperatures of 660 °C, 680 °C, 700 °C, and holding time of 20 s, and 60 s on the microstructure of aluminium alloy 6061 were investigated. From the micrographs, it was found that the most globular structures were achieved at processing parameters of 660 °C pouring temperature and 60 s holding time. The highest density and hardness of the samples were found at the same processing parameters. It can be concluded that the most spheroidal microstructure, the highest density, and the hardness were recorded at lower pouring temperature and longer holding time.
format	Conference or Workshop Item
author	N. A., Razak Asnul Hadi, Ahmad Mohd Rashidi, Maarof
author_facet	N. A., Razak Asnul Hadi, Ahmad Mohd Rashidi, Maarof
author_sort	N. A., Razak
title	Investigation of pouring temperature and holding time for semisolid metal feedstock production
title_short	Investigation of pouring temperature and holding time for semisolid metal feedstock production
title_full	Investigation of pouring temperature and holding time for semisolid metal feedstock production
title_fullStr	Investigation of pouring temperature and holding time for semisolid metal feedstock production
title_full_unstemmed	Investigation of pouring temperature and holding time for semisolid metal feedstock production
title_sort	investigation of pouring temperature and holding time for semisolid metal feedstock production
publisher	IOP Publishing Ltd
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/20950/ http://umpir.ump.edu.my/id/eprint/20950/ http://umpir.ump.edu.my/id/eprint/20950/1/Investigation%20of%20pouring%20temperature%20and%20holding%20time%20for%20semisolid.pdf
first_indexed	2023-09-18T22:30:31Z
last_indexed	2023-09-18T22:30:31Z
_version_	1777416254906171392

Investigation of pouring temperature and holding time for semisolid metal feedstock production

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