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A Tem Study of Inverse Melting in Nb45Cr55

Published online by Cambridge University Press:  21 February 2011

W. Sinkler ,
C. Michaelsen  and
R. Bormann
W. Sinkler
Affiliation:
[email protected]
C. Michaelsen
Affiliation:
Institute for Materials Research, GKSS Forschungszentrum, 21502 Geesthacht, Germany.
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Abstract

Inverse melting of bcc Nb4sCr55 is investigated using transmission electron microscopy, high-resolution TEM and electron diffraction. It is shown that the transformation to the amorphous phase initiates at the bcc grain boundaries. The transformation results in an increase in incoherence, evidenced by a loss of bend contours. Some anisotropy is found in the amorphous phase produced by inverse melting, which is associated in HRTEM with preferentially oriented but discontinuous and distorted fringes. The results are consistent with the production of an amorphous phase by inverse melting.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 398: Symposium C – Thermodynamics and Kinetics of Phase Transformations , 1995 , 239
Copyright
Copyright © Materials Research Society 1998

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References

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