Abstract
In this paper, we attempt to apply the modified hardening theory to estimate the creep resistance, which is considered as a key factor for controlling the creep deformation mechanism in cast nickel-base superalloys. It is suggested that, when the applied stress is high enough for the dislocations to cut into the γ′ particles, the creep resistance is almost a constant and independent of applied stress. At low applied stress, creep deformation is mainly controlled by dislocations climb, where the creep resistance has two components of a threshold stress and a friction stress. The model is verified for two cast nickel-base superalloys DZ17G and IN738. The results of detailed calculations are in good agreement with the experimental data.
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© 2006 Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Phase separation in Si–(B)–C–N polymer-derived ceramics
- Solidification curves for commercial Mg alloys obtained from heat-transfer modeled DTA experiments
- Thermodynamic assessment of the Mg–Nd system
- Solid-state reaction in Ni/Si multilayered films, characterized by magneto-optical and optical spectroscopies
- Phase diagram of the Co–Cu–Ti system at 850 °C
- Effects of an electric field applied during the solution heat treatment of the Al–Mg –Si–Cu alloy AA6111 on the subsequent natural aging kinetics and tensile properties
- Fabrication and electrical sliding wear of graphitic Cu–Cr–Zr matrix composites
- Further results on creep behaviour of sand-cast Mg–2.8Nd–0.8Zn–0.5Zr–0.3Gd alloy at 0.56 to 0.61Tm under stresses 40 to 90 MPa
- On the creep resistance in cast Ni-base superalloys
- Formation, stability, and presence of magnesium nitride in magnesium recycling processes
- From waste to high strength alloy – recycling of magnesium chips
- Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44
- Personal/Personelles
- Press / Presse
- Contents
- Articles Basic
- Phase separation in Si–(B)–C–N polymer-derived ceramics
- Solidification curves for commercial Mg alloys obtained from heat-transfer modeled DTA experiments
- Thermodynamic assessment of the Mg–Nd system
- Solid-state reaction in Ni/Si multilayered films, characterized by magneto-optical and optical spectroscopies
- Phase diagram of the Co–Cu–Ti system at 850 °C
- Effects of an electric field applied during the solution heat treatment of the Al–Mg –Si–Cu alloy AA6111 on the subsequent natural aging kinetics and tensile properties
- Articles Applied
- Fabrication and electrical sliding wear of graphitic Cu–Cr–Zr matrix composites
- Further results on creep behaviour of sand-cast Mg–2.8Nd–0.8Zn–0.5Zr–0.3Gd alloy at 0.56 to 0.61Tm under stresses 40 to 90 MPa
- On the creep resistance in cast Ni-base superalloys
- Formation, stability, and presence of magnesium nitride in magnesium recycling processes
- From waste to high strength alloy – recycling of magnesium chips
- Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44
- Notifications/Mitteilungen
- Personal/Personelles
- Press / Presse
Articles in the same Issue
- Contents
- Phase separation in Si–(B)–C–N polymer-derived ceramics
- Solidification curves for commercial Mg alloys obtained from heat-transfer modeled DTA experiments
- Thermodynamic assessment of the Mg–Nd system
- Solid-state reaction in Ni/Si multilayered films, characterized by magneto-optical and optical spectroscopies
- Phase diagram of the Co–Cu–Ti system at 850 °C
- Effects of an electric field applied during the solution heat treatment of the Al–Mg –Si–Cu alloy AA6111 on the subsequent natural aging kinetics and tensile properties
- Fabrication and electrical sliding wear of graphitic Cu–Cr–Zr matrix composites
- Further results on creep behaviour of sand-cast Mg–2.8Nd–0.8Zn–0.5Zr–0.3Gd alloy at 0.56 to 0.61Tm under stresses 40 to 90 MPa
- On the creep resistance in cast Ni-base superalloys
- Formation, stability, and presence of magnesium nitride in magnesium recycling processes
- From waste to high strength alloy – recycling of magnesium chips
- Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44
- Personal/Personelles
- Press / Presse
- Contents
- Articles Basic
- Phase separation in Si–(B)–C–N polymer-derived ceramics
- Solidification curves for commercial Mg alloys obtained from heat-transfer modeled DTA experiments
- Thermodynamic assessment of the Mg–Nd system
- Solid-state reaction in Ni/Si multilayered films, characterized by magneto-optical and optical spectroscopies
- Phase diagram of the Co–Cu–Ti system at 850 °C
- Effects of an electric field applied during the solution heat treatment of the Al–Mg –Si–Cu alloy AA6111 on the subsequent natural aging kinetics and tensile properties
- Articles Applied
- Fabrication and electrical sliding wear of graphitic Cu–Cr–Zr matrix composites
- Further results on creep behaviour of sand-cast Mg–2.8Nd–0.8Zn–0.5Zr–0.3Gd alloy at 0.56 to 0.61Tm under stresses 40 to 90 MPa
- On the creep resistance in cast Ni-base superalloys
- Formation, stability, and presence of magnesium nitride in magnesium recycling processes
- From waste to high strength alloy – recycling of magnesium chips
- Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44
- Notifications/Mitteilungen
- Personal/Personelles
- Press / Presse