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Amorphous Al(Ni) Alloy Formation by Pulsed Electron Beam Quenching

Published online by Cambridge University Press:  15 February 2011

S. T. Picraux  and
D. M. Follstaedt
S. T. Picraux
Affiliation:
Sandia National Laboratories, Albuquerque, Nm 87185
D. M. Follstaedt
Affiliation:
Sandia National Laboratories, Albuquerque, Nm 87185
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Abstract

The Microstructural Transition From The Epitaxial Crystalline To Amorphous State As A Function Of Ni Concentration Is Examined In Al(Ni) Alloys Formed By Ion Implantation And E-Beam Melt Quenching. The Evolution From Epitaxial Crystalline Al At ≲ 3.5 At.% Ni To Amorphous Phase Formation At 15–30 At.%Ni Is Characterized In Detail For 8, 10 And 12% Ni Uniform Concentration Samples By Ion Channeling And Transmission Electron Microscopy. The Transition Occurs Via Complete Loss Of Epitaxial Regrowth At 9 At.% And The Formation Of A Finegrained Polycrystalline Al, With Grain Size Decreasing With Increasing Ni From 20–100 Å At 10% Ni Concentration To ≲ 10–50 Å At 12% Ni.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 13 , 1982 , 751
Copyright
Copyright © Materials Research Society 1983

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Footnotes

*

This work performed at Sandia National Laboratories supported by the U. S. Department of Energy under contract number DE–ACO4–76DP00789.

References

REFERENCES

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