The Microstructural Changes after Thermal Shock Applied on Elektron 21 Magnesium Alloy

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Abstract:

The Elektron 21 is a commercial magnesium alloy containing Zn, Nd, Gd and Zr. The addition of rare earth elements improve its mechanical properties at elevated temperatures, what contribute to widen the range of applications. Constructions working at elevated temperatures can be exposed to its rapid changes. The purpose of present paper is to present results of study on reaction of Elektron 21 on applied thermal shock. As-cast material was heat treated according to four different variations. Afterwards, five cycles of thermal shocks, consisted of heating to 200°C (service temperature) and rapid cooling in water, have been applied. After heat treatment and each cycle of thermal shock the hardness and microstructure have been studied. The investigated material revealed satisfactory resistant to thermal shock, regardless of applied various heat treatment.

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Solid State Phenomena (Volume 211)

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77-82

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November 2013

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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