Probing the dynamics of quasicrystal growth using synchrotron live imaging

Details Probing the dynamics of quasicrystal growth using synchrotron live imaging Probing the dynamics of quasicrystal growth using synchrotron live imaging

2005-04-27

arxiv.org/abs/cond-mat/0504713v2

Physics

Condensed Matter

Materials Science

Scientific paper

The dynamics of quasicrystal growth remains an unsolved problem in condensed matter. By means of synchrotron live imaging, facetted growth proceeding by the tangential motion of ledges at the solid-melt interface is clearly evidenced all along the solidification of icosahedral AlPdMn quasicrystals. The effect of interface kinetics is significant so that nucleation and free growth of new facetted grains occur in the melt when the solidification rate is increased. The evolution of these grains is explained in details, which reveals the crucial role of aluminum rejection, both in the poisoning of grain growth and driving fluid flow.

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