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Interdiffusion Microstructure Map Topology

Published online by Cambridge University Press:  15 February 2011

J. E. Morral
Affiliation:
Department of Metallurgy and Materials Engineering, University of Connecticut, Storrs, CT 06269-3136, j.morral@uconn.edu
Huimi Chen
Affiliation:
Department of Metallurgy and Materials Engineering, University of Connecticut, Storrs, CT 06269-3136, huc95001@uconnvm.uconn.edu
Frederick Meisenkothen
Affiliation:
Department of MSE, Ohio State University, Columbus, OH 43210, meisen4@hotmail.com
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Abstract

When two alloys are placed in contact to form a diffusion couple, the microstructure that forms on heating is a function of alloy composition. This function can be illustrated on a phase diagram as an “Interdiffusion Microstructure Map” (IMM). An IMM was determined in the present work for Ni-Cr-Al diffusion couples at 1200°C. The couples consisted of one γ+γ' alloy bonded to a number of γ+β alloys. The IMM contained five fields corresponding to five different microstructures. The fields met at a five-line node, giving the map an unexpected topology. The IMM topology was deduced by considering the transition microstructures and kinetic equations that lead to the formation of interdiffusion microstructures.

Type
Research Article
Copyright
Copyright © Materials Research Society 2000

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References

1. Engstrom, A., Morral, J.E. and Ågren, J., Acta Mater. 45, p. 11891199 (1997).Google Scholar
2. Qiao, X., MS Thesis, University of Connecticut, 1998.Google Scholar
3. Meisenkothen, F., MS Thesis, University of Connecticut, 1998.Google Scholar
4. Meisenkothen, F. and Morral, J. E., Elevated Temperature Coatings: Science and Technology III, Edited by Hampikian, J.M. and Dahotre, N. (TMS, Warrendale, 1999) p. 143148.Google Scholar
5. Morral, J.E., Jin, Cheng, Engstrom, A., and Ågren, J., Scripta Mater. 34 (1996) p. 16611666.Google Scholar
6. Hopfe, W.D. and Morral, J. E., Acta Metall. et Mater., 42, p. 38873894 (1994).Google Scholar
7. Morral, J.E., Chen, Huimin and Meisenkothen, F., DifRea'99 Conference Proceeding, in press.Google Scholar
8. Chen, Huimin, Ph.D. Thesis, University of Connecticut (in preparation).Google Scholar
9. Boettinger, W.J., Coriell, S.R., Cambell, C.E., McFadden, G.B., Acta Mater., in press.Google Scholar