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Laves Phase Formation in the Fe20Co18W Alloy Annealed at 800°C

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Abstract:

The precipitation behaviour of the Fe20Co18W (wt%) alloy was studied by transmission electron microscopy during aging treatments at 800°C. The decomposition of the matrix produces the C14 phase. At the beginning of the heat treatment, the observation at the atom scale indicates that the structure of the precipitates does not coincide exactly with the Laves phase. Using the orientation relationship between the Fe based matrix and the precipitates it is shown that simple atomic shifts can lead to the transformation from the bcc matrix to the C14 Laves phase.

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Periodical:

Solid State Phenomena (Volumes 172-174)

Pages:

517-522

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.172-174.517

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Online since:

June 2011

Authors:

Paolo Galimberti, Sabine Lay, Annie Antoni-Zdziobek

Keywords:

C14 Phase, Iron Alloy, Laves Phase, Phase Transformation, Precipitation

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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