Morphological instabilities in Mg-7.7 at % Al

S. Maîtrejean; M. Véron; Y. Bréchet; G. R. Purdy

doi:10.1016/S1359-6462(99)00280-8

Morphological instabilities in Mg-7.7 at % Al

S. Maîtrejean, M. Véron, Y. Bréchet, G. R. Purdy

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8 Citations (Scopus)

Abstract

Here the response to ageing and re-heating of the discontinuous precipitation product in an Mg-Al alloy is reported. Samples were prepared for optical observation. Observations were performed on a JEOL 2010 FEG equipped with a scanning mode (STEM) and PHILIPS CM12 (used mainly for dark field imaging). The stability of the interfaces between the magnesium rich solid solution and the precipitated intermediate phase of magnesium aluminum alloys is strongly dependent on the precipitation mode. For the subsequent reactions, neither discontinuous coarsening nor discontinuous dissolution was observed in the alloy composition investigated.

Original language	English
Pages (from-to)	1235-1240
Number of pages	6
Journal	Scripta Materialia
Volume	41
Issue number	11
DOIs	https://doi.org/10.1016/S1359-6462(99)00280-8
Publication status	Published - Nov 1999
Externally published	Yes

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10.1016/S1359-6462(99)00280-8

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AU - Véron, M.

AU - Bréchet, Y.

AU - Purdy, G. R.

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AB - Here the response to ageing and re-heating of the discontinuous precipitation product in an Mg-Al alloy is reported. Samples were prepared for optical observation. Observations were performed on a JEOL 2010 FEG equipped with a scanning mode (STEM) and PHILIPS CM12 (used mainly for dark field imaging). The stability of the interfaces between the magnesium rich solid solution and the precipitated intermediate phase of magnesium aluminum alloys is strongly dependent on the precipitation mode. For the subsequent reactions, neither discontinuous coarsening nor discontinuous dissolution was observed in the alloy composition investigated.

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Morphological instabilities in Mg-7.7 at % Al

Abstract

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