Injection Tests and Effect On Microstructure and Properties of Aluminium 7075 Direct Thermal Method Feedstock Billets

The success of semi-solid metal forming is dependent on a globular solid grain formation within a liquid phase. This paper presents experimental works concerning semisolid metal processing of aluminium 7075 feedstock billets which were produced by direct thermal method. The flowability of feedstock...

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Main Authors:	Asnul Hadi, Ahmad, S., Naher, D., Brabazon
Format:	Article
Published:	Trans Tech Publications 2014
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/8228/ http://umpir.ump.edu.my/id/eprint/8228/ http://umpir.ump.edu.my/id/eprint/8228/

id	ump-8228
recordtype	eprints
spelling	ump-82282018-05-16T03:58:38Z http://umpir.ump.edu.my/id/eprint/8228/ Injection Tests and Effect On Microstructure and Properties of Aluminium 7075 Direct Thermal Method Feedstock Billets Asnul Hadi, Ahmad S., Naher D., Brabazon TJ Mechanical engineering and machinery The success of semi-solid metal forming is dependent on a globular solid grain formation within a liquid phase. This paper presents experimental works concerning semisolid metal processing of aluminium 7075 feedstock billets which were produced by direct thermal method. The flowability of feedstock billets was evaluated by an injection test processing unit. The feedstock billets were heated to a temperature of 620 °C by using a box furnace before transferred into a forming die. The formed feedstock billet was removed from the forming die after it was cooled to ambient temperature. Several analyses were conducted on the formed feedstock billets including dimensional measurement and microstructure analysis. The results show that the feedstock billets which contained the highest amount of free secondary phase were most successfully formed. Microstructure analysis results also revealed the formation of more globular and larger α–Al solid grains in the same feedstock billets. In this experimental work, the feedstock billets with higher amount of secondary (liquid) phase had a significant effect on formability. It is concluded that in order to achieve successful formability of the direct thermal method feedstock billets, the billets need to a have higher secondary phase content. Thus, important preparation methods of feedstock billets were characterised in order to allow for SSM processing. Trans Tech Publications 2014 Article PeerReviewed Asnul Hadi, Ahmad and S., Naher and D., Brabazon (2014) Injection Tests and Effect On Microstructure and Properties of Aluminium 7075 Direct Thermal Method Feedstock Billets. Materials Science and Engineering, 611-612. pp. 1637-1644. http://dx.doi.org/10.4028/www.scientific.net/KEM.611-612.1637 DOI: 10.4028/www.scientific.net/KEM.611-612.1637
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Asnul Hadi, Ahmad S., Naher D., Brabazon Injection Tests and Effect On Microstructure and Properties of Aluminium 7075 Direct Thermal Method Feedstock Billets
description	The success of semi-solid metal forming is dependent on a globular solid grain formation within a liquid phase. This paper presents experimental works concerning semisolid metal processing of aluminium 7075 feedstock billets which were produced by direct thermal method. The flowability of feedstock billets was evaluated by an injection test processing unit. The feedstock billets were heated to a temperature of 620 °C by using a box furnace before transferred into a forming die. The formed feedstock billet was removed from the forming die after it was cooled to ambient temperature. Several analyses were conducted on the formed feedstock billets including dimensional measurement and microstructure analysis. The results show that the feedstock billets which contained the highest amount of free secondary phase were most successfully formed. Microstructure analysis results also revealed the formation of more globular and larger α–Al solid grains in the same feedstock billets. In this experimental work, the feedstock billets with higher amount of secondary (liquid) phase had a significant effect on formability. It is concluded that in order to achieve successful formability of the direct thermal method feedstock billets, the billets need to a have higher secondary phase content. Thus, important preparation methods of feedstock billets were characterised in order to allow for SSM processing.
format	Article
author	Asnul Hadi, Ahmad S., Naher D., Brabazon
author_facet	Asnul Hadi, Ahmad S., Naher D., Brabazon
author_sort	Asnul Hadi, Ahmad
title	Injection Tests and Effect On Microstructure and Properties of Aluminium 7075 Direct Thermal Method Feedstock Billets
title_short	Injection Tests and Effect On Microstructure and Properties of Aluminium 7075 Direct Thermal Method Feedstock Billets
title_full	Injection Tests and Effect On Microstructure and Properties of Aluminium 7075 Direct Thermal Method Feedstock Billets
title_fullStr	Injection Tests and Effect On Microstructure and Properties of Aluminium 7075 Direct Thermal Method Feedstock Billets
title_full_unstemmed	Injection Tests and Effect On Microstructure and Properties of Aluminium 7075 Direct Thermal Method Feedstock Billets
title_sort	injection tests and effect on microstructure and properties of aluminium 7075 direct thermal method feedstock billets
publisher	Trans Tech Publications
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/8228/ http://umpir.ump.edu.my/id/eprint/8228/ http://umpir.ump.edu.my/id/eprint/8228/
first_indexed	2023-09-18T22:05:35Z
last_indexed	2023-09-18T22:05:35Z
_version_	1777414685352525824

Injection Tests and Effect On Microstructure and Properties of Aluminium 7075 Direct Thermal Method Feedstock Billets

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