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High Temperature Strength and Stability of Oxide Dispersion Hardened Alloys

Published online by Cambridge University Press:  18 June 2020

M.S. Grewal ,
S.A. Sastri  and
N.J. Grant
M.S. Grewal
Affiliation:
BRDL, Gillette Co., Boston, Mass.
S.A. Sastri
Affiliation:
BRDL, Gillette Co., Boston, Mass.
N.J. Grant
Affiliation:
BRDL, Gillette Co., Boston, Mass.
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Extract

The creep behavior of oxide dispersed alloys can be described by the following equation:

where ε is steady state creep rate, σ applied stress, R gas constant, T temperature in °K, Qc activation energy for creep, n stress exponent, A and n are constants.

Two unusual observations in the case of O.D. alloys are that Qc and n take on values that have not been explained satisfactorily. This investigation was undertaken to explain the unusually high strength, high Qc and high stability (high value of n) in the oxide dispersed alloys.

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Information
EMSA Proceedings , Volume 33: Proceedings Thirty-Third Annual Meeting Electron Microscopy Society of America, Las Vegas, Nevada August 11-15, 1975 , 15 1975 , pp. 174 - 175
Copyright
Copyright © Claitor’s Publishing Division 1975

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