Iucluding Stacking Fault Energy Into The Resisting Stress Model For Creep Of Particle Strengthened Superalloys

Af the base of steady state creep rate eguation for multicompment particle-strengthened alloys and in condideration of the stacking fault energie and resisting stress theory in creep, a new generalized steady-state creep rate equation is proposed:
$\mathop {\rm{\varepsilon }}\limits^{\rm{\cdot}} {\rm{s}}={\rm{A}}''{(rs)^{{\rm{no}}}}{[\frac{{\sigma -{\sigma _{\rm{p}}}}}{{{\rm{E}}({\rm{T}})}}]^{{\rm{no}}}}\exp (-\frac{{\rm{Q}}}{{{\rm{RT}}}})$
The applicability of this equation is assessed by the creep of Ni-Co binary alloys, several γ' or oxide dispersion strengthened nickel-base superalloys, low γ' fraction strengthened nickel-base superalloys (Waspaloy) with different contents of cobalt and high fraction γ' strengthened nickel-base superalloys (Udimet‰) with different contents of cobalt. The result of this assessment is available.