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Fim/atom Probe Studies of B—doped and Alloyed Ni3Ai

Published online by Cambridge University Press:  28 February 2011

D.D. Sieloff ,
S.S. Brenner  and
M.G. Burke
D.D. Sieloff
Affiliation:
University of Pittsburgh, Materials Science and Engineering Dept. Pittsburgh, PA 15261
S.S. Brenner
Affiliation:
University of Pittsburgh, Materials Science and Engineering Dept. Pittsburgh, PA 15261
M.G. Burke
Affiliation:
University of Pittsburgh, Materials Science and Engineering Dept. Pittsburgh, PA 15261
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Abstract

Field—ion microscopy and atom probe microanalysis have been used to determine thestructure and chemistry of grain boundaries in ductile, recrystallized Ni3Al containing 0.23 at % B (500 wt.ppm). The results indicate that the boron concentration fluctuates along the boundary plane and that the boron enriched zone is wider than expected from equilibrium—type adsorption. It was also found that boron lowers the aluminum concentration of some of the boundary regions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 81: Symposium H – High-Temperature Ordered Intermetallic Alloys II , 1986 , 87
Copyright
Copyright © Materials Research Society 1987

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References

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