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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Taylor & Francis Group
2014
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| Online Access: | 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 http://umpir.ump.edu.my/id/eprint/8152/ http://dx.doi.org/10.1080/10426914.2013.822980 |
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| author | Asnul Hadi, Ahmad Naher, Sumsun Brabazon, Dermot |
| author_facet | Asnul Hadi, Ahmad Naher, Sumsun Brabazon, Dermot |
| author_sort | Asnul Hadi, Ahmad |
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| content_provider | Universiti Malaysia Pahang Al-Sultan Abdullah |
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| continent | Asia |
| country | Malaysia |
| 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 |
| id | my.ump.umpir.8152 |
| institution | Universiti Malaysia Pahang |
| language | en en |
| publishDate | 2014 |
| publisher | Taylor & Francis Group |
| record_format | eprints |
| spelling | my.ump.umpir.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. (Published) http://dx.doi.org/10.1080/10426914.2013.822980 DOI: 10.1080/10426914.2013.822980 |
| 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 |
| title | 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_short | 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 |
| topic | TJ Mechanical engineering and machinery TS Manufactures |
| url | 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 http://umpir.ump.edu.my/id/eprint/8152/ http://dx.doi.org/10.1080/10426914.2013.822980 |
| url_provider | http://umpir.ump.edu.my/ |