Mechanical Properties of Thixoformed 7075 Feedstock Produced Via The Direct Thermal Method

Asnul Hadi, Ahmad and Naher, Sumsun and Brabazon, Dermot (2015) Mechanical Properties of Thixoformed 7075 Feedstock Produced Via The Direct Thermal Method. Key Engineering Materials, 651-53. pp. 1569-1574. ISSN 1662-9795. (Published)

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Abstract

This paper presents an overview of measured mechanical properties of thixoformed aluminium 7075 feedstock produced by the direct thermal method (DTM). The DTM feedstock billets were processed with a pouring temperature of 685 °C and holding periods of 20 s, 40 s and 60 s before being quenched and subsequently thixoformed. A conventionally cast feedstock billet was produced with a pouring temperature of 685 °C and was allowed to solidify without quenching. The feedstock billets were later formed by an injection test unit in the semi-solid state. Tensile testing was then conducted on the thixoformed feedstock billets. Tensile properties for 7075 DTM thixoformed feedstock billets were found significantly influenced by the thixoformed component density. Samples with longer holding times were found to have higher density and higher tensile strength.

Item Type:	Article
Uncontrolled Keywords:	Aluminium 7075, Direct Thermal Method, Mechanical Properties, Semi-Solid Metal, Thixoforming
Subjects:	T Technology > TJ Mechanical engineering and machinery
Faculty/Division:	Faculty of Mechanical Engineering
Depositing User:	Ir Dr Asnul Hadi Ahmad
Date Deposited:	11 Apr 2016 08:37
Last Modified:	16 May 2018 02:01
URI:	http://umpir.ump.edu.my/id/eprint/12757
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