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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3829

Title: Investigation of the T4 and T6 heat treatment cycles of semi-solid processed aluminium alloy A356
Authors: Moller, H
Govender, G
Stumpf, WE
Keywords: Semi-solid metal processing
Heat treatment
Aluminium alloy
Alloy A356
Casting alloys
Tensile properties
Natural aging
Materials science
Issue Date: 2008
Publisher: Bentham Open
Citation: Moller, H, Govender, G and Stumpf, WE. 2008. Investigation of the T4 and T6 heat treatment cycles of semi-solid processed aluminium alloy A356. Open Materials Science Journal, Vol. 2. pp 11-18
Abstract: The heat treatment cycles that are currently applied to semi-solid processed components are mostly those that are in use for dendritic casting alloys. These heat treatments are not necessarily the optimum treatments. It is shown that a decrease of the solution treatment time at 540 C from 6 hours to 1 hour does not alter the T4 or T6 tensile properties of the SSM processed A356 alloy. Slightly better impact properties are obtained with the shorter solution treatment. This could lead to time and energy savings. Natural aging prior to artificial aging causes the time-to-peak-hardness to be longer compared to the time when only artificial aging is used. Quenching after solution treatment in water at 70 C results in slightly lower tensile properties than after quenching in water at 25 C. The magnesium content of alloy A356 has a significant influence on the T4 and T6 properties of the alloy.
Description: Copyright: 2009 Bentham Open. This is the author's version of the work. It is posted here by permission of Bentham Open for your personal use. Not for redistribution. The definitive version was published in the journal, Open Materials Science Journal, Vol. 2, pp 11-18
URI: http://www.bentham-open.org
ISSN: 1874-088X
Appears in Collections:Metal and metal processes
General science, engineering & technology

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