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The Influence of High-Temperature Heat Treatment on the Microstructure of Mg-5Al-3Ca-0.7Sr-0.2Mn Magnesium Alloy

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Abstract:

The paper presents results of microstructural investigations of Mg-5Al-3Ca-0.7Sr-0.2Mn (ACJM53) magnesium alloys in the as-cast condition and after heat treatment at 450°C for 4.5 hours. Two kinds of transformation were observed in ACJM53 alloy after heat treatment: (Mg,Al)2Ca (C36) → Al2Ca (C15) and Al3Mg13(Sr,Ca) → Mg17(Sr,Ca)2 transformations without the change in morphology of output compounds. Morphology of Mg2Ca (C14) have been changed from fine lamellar to globular and precipitation process of Al2Ca (C15) phase inside the grains of solid solution was found.

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Periodical:

Solid State Phenomena (Volumes 203-204)

Pages:

246-249

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.203-204.246

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Online since:

June 2013

Authors:

Tomasz Rzychoń

Keywords:

Magnesium Alloy, Microstructural Stability, Microstructure

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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