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Site Occupation Determinations in Ni3Ai by Atom Probe

Published online by Cambridge University Press:  28 February 2011

M.K. Miller  and
J.A. Horton
M.K. Miller
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6376
J.A. Horton
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6376
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Abstract

The site occupation of three substitutional elements, hafnium, iron and cobalt, in substoichiometric Ni3Al was determined from atom probe field-ion microscopy. The hafnium was found to have a strong preference for the aluminum sites, the cobalt had a strong preference for the nickel sites, and the iron had a weak preference for the aluminum sites. The atom probe results were in agreement with zone axis electron channeling microanalysis of the same alloys and predictions from the position of the solubility lobes in the ternary phase diagrams.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 81: Symposium H – High-Temperature Ordered Intermetallic Alloys II , 1986 , 117
Copyright
Copyright © Materials Research Society 1987

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References

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