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Ductile-to-Brittle Transition in MoSi2

Published online by Cambridge University Press:  01 January 1992

S. R. Srinivasan ,
R. B. Schwarz  and
J. D. Embury
S. R. Srinivasan
Affiliation:
Center for Materials Science, Mail Stop K-765 Los Alamos National Laboratory, Los Alamos, NM 87545, USA
R. B. Schwarz
Affiliation:
Center for Materials Science, Mail Stop K-765 Los Alamos National Laboratory, Los Alamos, NM 87545, USA
J. D. Embury
Affiliation:
Center for Materials Science, Mail Stop K-765 Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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Abstract

We have studied the mechanical behavior of two fine grained MoSi2 alloys containing 0.61 at% (0.19 wt%) and 0.29 at% (0.09 wt%) oxygen, respectively. By preparing these alloys in almost identical fashion, their only difference was their oxygen content. The mechanical behavior was studied by four-point flexure tests in unnotched specimens between 800°C and 1400°C. We interpret the mechanical behavior data in terms of Davidenkov diagrams which describe the dependence of the apparent ductile-to-brittle transition temperature on the SiO2 content in the alloys.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 1099
Copyright
Copyright © Materials Research Society 1995

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References

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