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Suppression of Thermal Grain Growth in Nickel by Prior Electron Irradiation

Published online by Cambridge University Press:  22 February 2011

Yuzun Gao ,
Charles W. Allen  and
R. C. Bitrtcher
Yuzun Gao
Affiliation:
Argonne National Laboratory, Materials Science Division, 9700 S. Cass Ave., Argonne, IL 60439, USA
Charles W. Allen
Affiliation:
Argonne National Laboratory, Materials Science Division, 9700 S. Cass Ave., Argonne, IL 60439, USA
R. C. Bitrtcher
Affiliation:
Argonne National Laboratory, Materials Science Division, 9700 S. Cass Ave., Argonne, IL 60439, USA
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Abstract

An anomalous effect of electron irradiation on thermal grain growth in Ni has been observed using in situ TEM. Grain growth during thermal annealing was suppressed in areas irradiated with electrons. Grain growth suppression required a minimum electron energy between 100 and 200 keV. This alteration of thermal grain growth is attributed to electron beam injection of a surface contaminant such as carbon. This work points out that care must be exercised in the execution and evaluation of in situ TEM or ion beam experiments that deal with microstructural changes which are highly compositionally sensitive.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 316: Symposium A – Materials Synthesis and Processing Using Ion Beams , 1993 , 217
Copyright
Copyright © Materials Research Society 1994

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References

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