The solidification of undercooled melts via twinned dendritic growth

The solidification of undercooled Cu–xwt.% Sn (x=1, 2, 3, 4) alloys has been studied by a melt encasement (fluxing) technique. It was found that below undercoolings of ΔT≈90K the preferred dendrite growth orientation in each of these alloys was along the 〈111〉 direction. Moreover the 2 and 3wt.% Sn...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2004-07, Vol.375-377, p.547-551
Main Authors: Mullis, A.M., Dragnevski, K.I., Cochrane, R.F.
Format: Article
Language:English
Subjects:
Feather grains
Twinned dendrites
Undercooling
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Summary:The solidification of undercooled Cu–xwt.% Sn (x=1, 2, 3, 4) alloys has been studied by a melt encasement (fluxing) technique. It was found that below undercoolings of ΔT≈90K the preferred dendrite growth orientation in each of these alloys was along the 〈111〉 direction. Moreover the 2 and 3wt.% Sn alloys also displayed evidence of twinned growth. Above ΔT≈90K the preferred growth direction returned to the more usual 〈100〉 orientation.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2003.10.135