1
متالوژی::
گسیختگی خزشی
Strengthened wrought alloys like L-605 and HS-188 possess better creep rupture char- acteristics when compared with Hastelloy X and INCO-617 by about 100F.
Strengthening is achieved by balancing the hardening of refractory elements in the solid solution and the precipitation of carbide, the two playing a role for high temperature creep rupture and for fatigue strength.
Addition of fine particles of inert and thermodynami- cally stable ThO2 or Y2O3 provide excellent creep rupture strength to temperatures nearing the melting point of the base.
The initiation of failure is then prolonged, and creep rupture life is improved.
FIGURE 11.12 PWA-1480 single-crystal alloy creep rupture life (Gell and Duhl, 1986).
واژگان شبکه مترجمین ایران