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Article: Effect of Solution Heat Treatments on the Microstructure and Mechanical Properties of a Die-Cast AlSi7MgMn Alloy
- Article from:
- Metallurgical and Materials Transactions
- Article date:
- July 1, 2008
- Author:
CopyrightCopyright Minerals, Metals & Materials Society Jul 2008. Provided by ProQuest LLC. (Hide copyright information)
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The influence of solution heat treatment time and temperature on the microstructure and mechanical properties and the mode of fracture of a high-pressure die-cast AlSi7MgMn alloy is reported. Metallographic and image analysis techniques have been used to quantitatively examine the microstructural changes occurring during solution heat treatment. A solution heat treatment of 15 minutes at 475 °C, or even more at 525 °C, is sufficient to spheroidize the eutectic Si, as well as coarsen and increase the interparticle distance of the eutectic Si. Increasing the solutionizing temperature from 475 °C to 525 °C improves the mechanical properties.
DOI: 10. 1007/s11661-008-9527-0
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