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Elastic Instability During Amorphization of Internetallic Compounds by Charged-Particle Beams*

Published online by Cambridge University Press:  26 February 2011

P. R. Okamoto ,
L. E. Rehn ,
J. Pearson ,
R. Bhadra  and
M. Grinsditch
P. R. Okamoto
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
L. E. Rehn
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
J. Pearson
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
R. Bhadra
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
M. Grinsditch
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
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Abstract

Transmission electron microscopy (TEN) and Brillouin scattering methods were used to determine the lattice dilatation and shear elastic constant as a function of the degree of long-range order during room temperature irradiation of Zr3Al with 1.0-MeV Kr+. The results indicate that the onset of amorphization in Zr3Al is triggered by an elastic shear instability, and that the instability is directly related to the volume dilatation associated with the destruction of long-range order. It is also shown that the volume dependence of the shear elastic constant associated with radiation-induced disordering and amorphization is virtually identical to that associated with the heating to melting of many metals.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 100: Symposium – A Fundamentals of Beam-Solid Interactions and Transient Thermal Processing , 1988 , 51
Copyright
Copyright © Materials Research Society 1988

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Footnotes

*

Work supported by the U. S. Department of Energy, BES-Materials Sciences, under Contract W-31-109-Eng-38.

References

REFERENCES

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