L12↔DO19 transformation in the intermetallic compound Fe3Ge

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Univ of Hong Kong, Hong Kong, Hong Kong [1 ]
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J Mater Sci | / 22卷 / 5405-5414期
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Crystal microstructure - Hysteresis - Intermetallics - Phase transitions - Reaction kinetics;
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摘要：
From a crystallographic point of view, the transition from the L12 to DO19 phase is an ordered version of the widely investigated fcc to hcp transformation. In the present study, the transformation kinetics of the forward and backward reactions of the L12↔DO19 transitions in Fe3Ge have been studied and it is shown that a large hysteresis exists between the forward and backward reactions. The detailed microstructural changes that accompany the L12↔DO19 transition have been characterized and these explain the observed transformation hysteresis.
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