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Twin Transmission Across Grain Boundaries in Mg Read chapter Read first chapter

2020 | OriginalPaper | Chapter

The Independent Effects of Cooling Rate and Na Addition on Hydrogen Storage Properties in Hypo-eutectic Mg Alloys

Authors : Manjin Kim, Yahia Ali, Stuart D. McDonald, Trevor B. Abbott, Kazuhiro Nogita

Published in: Magnesium Technology 2020

Publisher: Springer International Publishing

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Abstract

The addition of trace concentrations of elements such as Na and Sr along with rapid cooling is well-established method for modification of the faceted eutectic Si in Al–Si. There have been some efforts to extend this strategy to Mg-based alloys. For example, it has been reported that trace Na addition to Mg–Ni alloys can also refine the eutectic Mg2Ni phase and facilitate functional property improvements such as hydrogen absorption kinetics. In this work, we have extended this strategy to a variety of other Mg-based alloys such as Mg–Ni and Mg–La alloys through the addition of trace elements and use of different cooling rates. The modification of the eutectic morphology in these alloys is discussed with regard to the Jackson parameters which were calculated using data from Thermo-Calc. The relationship between eutectic modification and hydrogen absorption kinetics in these alloys is investigated. The work has demonstrated, contrary to prior expectations, that microstructural refinement and hydrogen absorption kinetics are not necessarily correlated.

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previous chapter Investigation and Modelling of the Influence of Cooling Rates on the Microstructure of AZ91 Alloys
next chapter Producing High Purity Magnesium (99.99%) Directly by Pidgeon Process
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Metadata
Title
The Independent Effects of Cooling Rate and Na Addition on Hydrogen Storage Properties in Hypo-eutectic Mg Alloys
Authors
Manjin Kim
Yahia Ali
Stuart D. McDonald
Trevor B. Abbott
Kazuhiro Nogita
Copyright Year
2020
Book
Magnesium Technology 2020

Print ISBN: 978-3-030-36646-9

Electronic ISBN: 978-3-030-36647-6

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-36647-6_43

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