Staff View: T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology

T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology

Aluminium alloy of LM4 is abundantly utilized in automotive and aerospace industries because of its good fluidity, high mechanical strength, good wear resistance and low density. T6 heat treatment as part of its forming process will enhanced further these properties. However, the total time required...

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Main Authors:	Hashim, Hanizam, Salleh, Mohd Shukor, Abd Rahman, Mohd Soufhwee, Yahaya, Saifudin Hafiz, Abd Rashid, Mohd Warikh, Omar, Mohd Zaidi, Al-Zubaidi, Salah, Sulong, Abu Bakar
Format:	Article
Language:	English
Published:	Penerbit Akademia Baru 2020
Online Access:	http://eprints.utem.edu.my/id/eprint/25090/2/915-ARTICLE%20TEXT-5985-1-10-20201003.PDF http://eprints.utem.edu.my/id/eprint/25090/ http://www.akademiabaru.com/submit/index.php/mjcsm/article/view/915/2606 https://doi.org/10.37934/mjcsm.3.1.113
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spelling	my.utem.eprints.250902021-07-23T18:18:28Z http://eprints.utem.edu.my/id/eprint/25090/ T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology Hashim, Hanizam Salleh, Mohd Shukor Abd Rahman, Mohd Soufhwee Yahaya, Saifudin Hafiz Abd Rashid, Mohd Warikh Omar, Mohd Zaidi Al-Zubaidi, Salah Sulong, Abu Bakar Aluminium alloy of LM4 is abundantly utilized in automotive and aerospace industries because of its good fluidity, high mechanical strength, good wear resistance and low density. T6 heat treatment as part of its forming process will enhanced further these properties. However, the total time required for T6 is very long and often delay the overall production cycle time. Furthermore, thixoforming of semi-solid processing method, which promises a near-net-shape and further enhanced performance of the end products. One of the major concerns is an additional cost in billet feedstock production that slows down the application in industries. Therefore, this paper aim is to optimize the T6 heat treatment on the thixoformed LM4 alloy using response surface methodology (RSM) of Design Expert software. Thus, a simple cooling slope casting to produce the feedstock for thixoforming of near globular and fine α-Al microstructure is being applied.Cooling slope parameters at pouring temperature of 660 °C; slope length of 440 mm and tilt angle of 45 °. As results, small globular grain size of 35.709 µ and shape factor of 0.89 are obtained. Moreover, based on the RSMM responses, the optimum parameters of T6 heat treatment; solution treatment at 530 °C for 30 minutes and 2 hours of ageing at 180 °C. The overall strength of LM4 improved significantly with ultimate tensile strength (UTS) of 252.3 MPa, 98.9 HV surface hardness and coefficient of friction (CoF) of 0.4299, respectively Penerbit Akademia Baru 2020-09 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/25090/2/915-ARTICLE%20TEXT-5985-1-10-20201003.PDF Hashim, Hanizam and Salleh, Mohd Shukor and Abd Rahman, Mohd Soufhwee and Yahaya, Saifudin Hafiz and Abd Rashid, Mohd Warikh and Omar, Mohd Zaidi and Al-Zubaidi, Salah and Sulong, Abu Bakar (2020) T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology. Malaysian Journal on Composites Science and Manufacturing, 3 (1). pp. 1-13. ISSN 2716-6945 http://www.akademiabaru.com/submit/index.php/mjcsm/article/view/915/2606 https://doi.org/10.37934/mjcsm.3.1.113
institution	Universiti Teknikal Malaysia Melaka
building	UTEM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknikal Malaysia Melaka
content_source	UTEM Institutional Repository
url_provider	http://eprints.utem.edu.my/
language	English
description	Aluminium alloy of LM4 is abundantly utilized in automotive and aerospace industries because of its good fluidity, high mechanical strength, good wear resistance and low density. T6 heat treatment as part of its forming process will enhanced further these properties. However, the total time required for T6 is very long and often delay the overall production cycle time. Furthermore, thixoforming of semi-solid processing method, which promises a near-net-shape and further enhanced performance of the end products. One of the major concerns is an additional cost in billet feedstock production that slows down the application in industries. Therefore, this paper aim is to optimize the T6 heat treatment on the thixoformed LM4 alloy using response surface methodology (RSM) of Design Expert software. Thus, a simple cooling slope casting to produce the feedstock for thixoforming of near globular and fine α-Al microstructure is being applied.Cooling slope parameters at pouring temperature of 660 °C; slope length of 440 mm and tilt angle of 45 °. As results, small globular grain size of 35.709 µ and shape factor of 0.89 are obtained. Moreover, based on the RSMM responses, the optimum parameters of T6 heat treatment; solution treatment at 530 °C for 30 minutes and 2 hours of ageing at 180 °C. The overall strength of LM4 improved significantly with ultimate tensile strength (UTS) of 252.3 MPa, 98.9 HV surface hardness and coefficient of friction (CoF) of 0.4299, respectively
format	Article
author	Hashim, Hanizam Salleh, Mohd Shukor Abd Rahman, Mohd Soufhwee Yahaya, Saifudin Hafiz Abd Rashid, Mohd Warikh Omar, Mohd Zaidi Al-Zubaidi, Salah Sulong, Abu Bakar
spellingShingle	Hashim, Hanizam Salleh, Mohd Shukor Abd Rahman, Mohd Soufhwee Yahaya, Saifudin Hafiz Abd Rashid, Mohd Warikh Omar, Mohd Zaidi Al-Zubaidi, Salah Sulong, Abu Bakar T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology
author_facet	Hashim, Hanizam Salleh, Mohd Shukor Abd Rahman, Mohd Soufhwee Yahaya, Saifudin Hafiz Abd Rashid, Mohd Warikh Omar, Mohd Zaidi Al-Zubaidi, Salah Sulong, Abu Bakar
author_sort	Hashim, Hanizam
title	T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology
title_short	T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology
title_full	T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology
title_fullStr	T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology
title_full_unstemmed	T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology
title_sort	t6 heat treatment optimization of thixoformed lm4 aluminium alloy using response surface methodology
publisher	Penerbit Akademia Baru
publishDate	2020
url	http://eprints.utem.edu.my/id/eprint/25090/2/915-ARTICLE%20TEXT-5985-1-10-20201003.PDF http://eprints.utem.edu.my/id/eprint/25090/ http://www.akademiabaru.com/submit/index.php/mjcsm/article/view/915/2606 https://doi.org/10.37934/mjcsm.3.1.113
_version_	1706960985919586304
score	13.211869

T6 Heat Treatment Optimization Of Thixoformed LM4 Aluminium Alloy Using Response Surface Methodology

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