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Erschienen in:
01.11.2013
Newly observed prismatic Mg2Sn laths in a Mg–Sn–Zn–Mn alloy
Erschienen in: Journal of Materials Science | Ausgabe 21/2013
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Abstract
Lath-shaped Mg2Sn precipitates with their habit planes parallel to the prismatic planes of the Mg matrix are characterized in a Mg–Sn–Zn–Mn alloy. The orientation relationships (ORs) between these β-Mg2Sn precipitates and α-Mg matrix are [0 1 1]β//[0 1 −1 0]α and (0 1 −1)β deviating 0.36° to 1.20° from (0 0 0 1)α, in which the deviation angle of 0.39° is most frequently observed. Although the ORs vary, the laths always exhibit four side facets bearing fixed relationships with g vectors in reciprocal space. Their major side facets incline to the basal plane of Mg matrix from 4.3° to 14.3°.