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Microstructural Changes Produced by Ion-Beam Thinning in Al-Li-Cu Alloys

Published online by Cambridge University Press:  21 February 2011

A. K. Singh ,
M. A. Imam ,
D. J. Michel  and
K. Sadananda
A. K. Singh
Affiliation:
Crystal Growth and Materials Testing Associates, Lanham, MD 20706
M. A. Imam
Affiliation:
Naval Research Laboratory, Washington, DC 20375-5000
D. J. Michel
Affiliation:
Naval Research Laboratory, Washington, DC 20375-5000
K. Sadananda
Affiliation:
Naval Research Laboratory, Washington, DC 20375-5000
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Abstract

Thin specimens for transmission electron microscopy examination may be prepared by several techniques, such as electropolishing and ion-beam thinning. Ion-beam thinning, which employs the use of an argon ion-beam at high voltage (e.g. 6kV) to bombard the specimen, is a commonly used technique for preparing and/or cleaning thin foil specimens. The experimental results show that even short-time thinning of Al-Li-Cu alloys with argon ion-beams introduce dramatic microstructural changes. Interesting observations concerning the effect of the ion-beam on quasi-crystals in Al-Li-Cu alloys during the thinning process are presented. The results and causes of the ion-beam thinning in Al-Li-Cu alloys are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 115: Symposium W – Specimen Preparation for Transmission Electron Microscopy of Materials I , 1987 , 161
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

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