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Interdiffusion Between Mo and TiAl

Published online by Cambridge University Press:  15 February 2011

Min-Xian Zhang ,
Ker-Chang Hsieh  and
Y. Austin Chang
Min-Xian Zhang
Affiliation:
Department of Materials Materials Science and Engineering, University of Wisconsin, Madison, WI 53706
Ker-Chang Hsieh
Affiliation:
On leave from Institute of Materials Science and Engineering, Sun Yat-Sen University, Kaohsiung, Taiwan, ROC
Y. Austin Chang
Affiliation:
Department of Materials Materials Science and Engineering, University of Wisconsin, Madison, WI 53706
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Abstract

Diffusion couple experiments were carried out for Mo/γ-TiAl at 900, 1000 and 1100°C for periods of time ranging from 121 to 553 hrs. Using the Boltzmann-Matano analysis, the two diagonal interdiffusion coefficients for the two phases formed in these couples were obtained assuming the cross diagonal terms to be negligible. These two phases are δ-(Mo, Ti)3Al and β-(Mo,Al)Ti. The three intrinsic diffusion coefficients were also obtained using the Darken-type relationships between the interdiffusion and intrinsic diffusion coefficients. The calculated interdiffusion coefficients from the three intrinsic diffusion coefficients are in reasonable accord with those obtained directly from the Boltzmann-Matano analysis.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 273: Symposium Q – Intermetallic Matrix Composites II , 1992 , 103
Copyright
Copyright © Materials Research Society 1992

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References

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