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High Temperature Mechanical Behavior of a Mo-Si-B Solid Solution Alloy

Published online by Cambridge University Press:  26 February 2011

Padam Jain  and
K. S. Kumar
Padam Jain
Affiliation:
[email protected], Brown University, Division of Engineering, 182, Hope St., Providnce, RI, 02906, United States, 401 2258088
K. S. Kumar
Affiliation:
[email protected], Brown University, Division of Engineering, 182 Hope Street, Providence, RI, 02912, United States
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Abstract

Multi phase alloys at the Mo-rich end of the Mo-Si-B system have drawn recent attention because of their high temperature performance capabilities. Previous studies on two- and three-phase alloys have confirmed the central role of the Mo-rich solid solution phase in affecting creep resistance and low-temperature toughness in these multiphase alloys. Thus, it is important to understand the intrinsic mechanical response of the matrix solid solution. In this study, compression and tensile tests were conducted over a nominal strain rate regime spanning 10-4 s-1 to 10-7 s-1 and temperature ranging from 1000°C to 1300°C in vacuum on a Mo-Si-B solid solution alloy (Mo-3Si-1.3B in at.%) that contained a low fraction (~5 %) of the T2 phase. The microstructure of the deformed specimens was examined to elucidate the underlying deformation mechanisms.

Keywords

Mostress/strain relationshipstrength
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 980: Symposium II – Advanced Intermetallic-Based Alloys , 2006 , 0980-II06-03
Copyright
Copyright © Materials Research Society 2007

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References

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