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2017 | OriginalPaper | Buchkapitel

Real-Time Observation of AZ91 Solidification by Synchrotron Radiography

verfasst von : G. Zeng, K. Nogita, S. Belyakov, J. W. Xian, S. D. McDonald, K. V. Yang, H. Yasuda, C. M. Gourlay

Erschienen in: Magnesium Technology 2017

Verlag: Springer International Publishing

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Abstract

The equiaxed solidification of AZ91 has been studied by time-resolved synchrotron radiography of 150 µm thick samples. Primary Al₈Mn₅ and α-Mg dendrite growth has been observed and analysed during solidification at a cooling rate of 5 K/min. Morphological, compositional and kinetic information of AZ91 solidification has been extracted from quantitative image analysis on synchrotron radiographs combined with thermodynamic calculations. α-Mg dendrites appeared to grow largely independently of the surrounding Al₈Mn₅ particles. Solute partitioning mainly occurred during the dendrite coarsening stage and Zn/Al solute build-up was studied in a region that remains a liquid channel until a late stage of AZ91 solidification.

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Vorheriges Kapitel Morphological Transition of α-Mg Dendrites During Near-Isothermal Solidification of a Mg–Nd–Gd–Zn–Zr Casting Alloy

Nächstes Kapitel 3D Microstructural Evolution on Solidifying Mg–5Nd–5Zn Alloy Observed via In Situ Synchrotron Tomography

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Titel: Real-Time Observation of AZ91 Solidification by Synchrotron Radiography
verfasst von: G. Zeng
K. Nogita
S. Belyakov
J. W. Xian
S. D. McDonald
K. V. Yang
H. Yasuda
C. M. Gourlay
Verlag: Springer International Publishing
Buch: Magnesium Technology 2017
Print ISBN: 978-3-319-52391-0

Electronic ISBN: 978-3-319-52392-7

Copyright-Jahr: 2017
DOI: https://doi.org/10.1007/978-3-319-52392-7_82

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