The Effect of Direct Thermal Method, Temperature and Time on Microstructure of a Cast Aluminium Alloy

The direct thermal method is used for the creation of globular microstructures suitable for semi-solid metal forming. In this paper both simulation and experimental results using direct thermal method are presented. ProCAST® software was used to estimate temperature distribution inside the alumini...

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Main Authors:	Asnul Hadi, Ahmad, Naher, Sumsun, Brabazon, Dermot
Format:	Article
Language:	English English
Published:	Taylor & Francis Group 2014
Subjects:	TJ Mechanical engineering and machinery TS Manufactures
Online Access:	http://umpir.ump.edu.my/id/eprint/8152/ http://umpir.ump.edu.my/id/eprint/8152/ http://umpir.ump.edu.my/id/eprint/8152/ http://umpir.ump.edu.my/id/eprint/8152/1/MAMP.pdf http://umpir.ump.edu.my/id/eprint/8152/4/The%20Effect%20of%20Direct%20Thermal%20Method%2C%20Temperature%20and%20Time%20on%20Microstructure%20of%20a%20Cast%20Aluminium%20Alloy.pdf

id	ump-8152
recordtype	eprints
spelling	ump-81522018-05-16T03:52:37Z http://umpir.ump.edu.my/id/eprint/8152/ The Effect of Direct Thermal Method, Temperature and Time on Microstructure of a Cast Aluminium Alloy Asnul Hadi, Ahmad Naher, Sumsun Brabazon, Dermot TJ Mechanical engineering and machinery TS Manufactures The direct thermal method is used for the creation of globular microstructures suitable for semi-solid metal forming. In this paper both simulation and experimental results using direct thermal method are presented. ProCAST® software was used to estimate temperature distribution inside the aluminium billet. In validation work, molten aluminium A356 was poured into metallic copper tube moulds and cooled down to the semi-solid temperature before being quenched in water at room temperature. The effect of pouring temperatures of 630 °C, 650 °C, 665 °C, 680 °C and holding times of 45 s and 60 s on the microstructure of aluminium A356 alloy were investigated. The simulation results showed that the average temperature rate within the copper mould, from initial pouring temperature to just before quenching, was approximately 1 °C/s. Examination of the solidified microstructures showed that the microstructure was more spherical when lower pouring temperatures and holding periods were used. From the micrographs it was found that the most globular and smallest structures were achieved at processing parameters of 630 °C and 45 s. Taylor & Francis Group 2014-02-01 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/8152/1/MAMP.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/8152/4/The%20Effect%20of%20Direct%20Thermal%20Method%2C%20Temperature%20and%20Time%20on%20Microstructure%20of%20a%20Cast%20Aluminium%20Alloy.pdf Asnul Hadi, Ahmad and Naher, Sumsun and Brabazon, Dermot (2014) The Effect of Direct Thermal Method, Temperature and Time on Microstructure of a Cast Aluminium Alloy. Materials and Manufacturing Processes, 29 (2). pp. 134-139. ISSN 1532-2475 http://dx.doi.org/10.1080/10426914.2013.822980 DOI: 10.1080/10426914.2013.822980
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	TJ Mechanical engineering and machinery TS Manufactures
spellingShingle	TJ Mechanical engineering and machinery TS Manufactures Asnul Hadi, Ahmad Naher, Sumsun Brabazon, Dermot The Effect of Direct Thermal Method, Temperature and Time on Microstructure of a Cast Aluminium Alloy
description	The direct thermal method is used for the creation of globular microstructures suitable for semi-solid metal forming. In this paper both simulation and experimental results using direct thermal method are presented. ProCAST® software was used to estimate temperature distribution inside the aluminium billet. In validation work, molten aluminium A356 was poured into metallic copper tube moulds and cooled down to the semi-solid temperature before being quenched in water at room temperature. The effect of pouring temperatures of 630 °C, 650 °C, 665 °C, 680 °C and holding times of 45 s and 60 s on the microstructure of aluminium A356 alloy were investigated. The simulation results showed that the average temperature rate within the copper mould, from initial pouring temperature to just before quenching, was approximately 1 °C/s. Examination of the solidified microstructures showed that the microstructure was more spherical when lower pouring temperatures and holding periods were used. From the micrographs it was found that the most globular and smallest structures were achieved at processing parameters of 630 °C and 45 s.
format	Article
author	Asnul Hadi, Ahmad Naher, Sumsun Brabazon, Dermot
author_facet	Asnul Hadi, Ahmad Naher, Sumsun Brabazon, Dermot
author_sort	Asnul Hadi, Ahmad
title	The Effect of Direct Thermal Method, Temperature and Time on Microstructure of a Cast Aluminium Alloy
title_short	The Effect of Direct Thermal Method, Temperature and Time on Microstructure of a Cast Aluminium Alloy
title_full	The Effect of Direct Thermal Method, Temperature and Time on Microstructure of a Cast Aluminium Alloy
title_fullStr	The Effect of Direct Thermal Method, Temperature and Time on Microstructure of a Cast Aluminium Alloy
title_full_unstemmed	The Effect of Direct Thermal Method, Temperature and Time on Microstructure of a Cast Aluminium Alloy
title_sort	effect of direct thermal method, temperature and time on microstructure of a cast aluminium alloy
publisher	Taylor & Francis Group
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/8152/ http://umpir.ump.edu.my/id/eprint/8152/ http://umpir.ump.edu.my/id/eprint/8152/ http://umpir.ump.edu.my/id/eprint/8152/1/MAMP.pdf http://umpir.ump.edu.my/id/eprint/8152/4/The%20Effect%20of%20Direct%20Thermal%20Method%2C%20Temperature%20and%20Time%20on%20Microstructure%20of%20a%20Cast%20Aluminium%20Alloy.pdf
first_indexed	2023-09-18T22:05:27Z
last_indexed	2023-09-18T22:05:27Z
_version_	1777414677903441920

The Effect of Direct Thermal Method, Temperature and Time on Microstructure of a Cast Aluminium Alloy

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