The Heat Treatment of Rheo-High Pressure Die Cast Al-Zn-Mg Alloy 7017

Heinrich Möller; Gonasagren Govender

doi:10.4028/www.scientific.net/SSP.192-193.155

Paper Titles

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Experimental Investigation on 7075 Aluminium Response during Thixoextrusion
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The Heat Treatment of Rheo-High Pressure Die Cast Al-Zn-Mg Alloy 7017
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The Heat Treatment of Rheo-High Pressure Die Cast Al-Zn-Mg Alloy 7017

Abstract:

The CSIR rheocasting system was successfully used to produce high pressure die cast plates of medium-strength, weldable, wrought Al-Zn-Mg alloy 7017. A solution treatment at 450oC for 5 h leads to insufficient dissolution of Mg and Zn, resulting in inadequate T6 mechanical properties after artificial aging. However, a solution treatment at 470oC for 5 h, followed by water quenching and artificial aging at 120oC for 24 h results in tensile properties comparable to those of wrought alloy 7017 plate and extrusions. The alloy also shows a strong room temperature aging response, making it ideal to be used after welding without any further heat treatment.

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Periodical:

Solid State Phenomena (Volumes 192-193)

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155-160

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.192-193.155

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Online since:

October 2012

Authors:

Heinrich Möller, Gonasagren Govender

Keywords:

Aging, Al-Zn-Mg Alloy, Heat Treatment, Rheocasting

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