Relationships between Microstructural Parameters and Time-Dependent Mechanical Properties of a New Nickel-Based Superalloy AD730™
Abstract
:1. Introduction
2. Experimental Procedure
2.1. Material
Element | Ni | C | Cr | Mo | W | Al | Co | Ti | Nb | Fe | B | Zr |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Wt. % | Balance | <0.02 | 16 | 3 | 2.7 | 2.3 | 8.5 | 3.5 | 1.1 | 4 | 0.01 | 0.03 |
Microstructure | Grain Size | Average γ’ Precipitation Size | |||
---|---|---|---|---|---|
Primary | Coarse Secondary | Fine Spherical Secondary | Tertiary | ||
Fine Grains | 10 µm | 1 µm | X | 40 nm | N.O. |
Coarse Grains | 350 µm | X | 300 nm | 35 nm | N.O. |
Single Crystals | X | X | 300 nm | 35 nm | N.O. |
2.2. Mechanical Testing
3. Results
3.1. Creep Behavior
3.2. Dwell-Fatigue Behavior
4. Discussion
4.1. Deformation and Damage Mechanisms during Creep
4.2. Deformation and Damage Mechanisms during Dwell-Fatigue Loading at 700 °C
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Thébaud, L.; Villechaise, P.; Cormier, J.; Crozet, C.; Devaux, A.; Béchet, D.; Franchet, J.-M.; Organista, A.; Hamon, F. Relationships between Microstructural Parameters and Time-Dependent Mechanical Properties of a New Nickel-Based Superalloy AD730™. Metals 2015, 5, 2236-2251. https://doi.org/10.3390/met5042236
Thébaud L, Villechaise P, Cormier J, Crozet C, Devaux A, Béchet D, Franchet J-M, Organista A, Hamon F. Relationships between Microstructural Parameters and Time-Dependent Mechanical Properties of a New Nickel-Based Superalloy AD730™. Metals. 2015; 5(4):2236-2251. https://doi.org/10.3390/met5042236
Chicago/Turabian StyleThébaud, Louis, Patrick Villechaise, Jonathan Cormier, Coraline Crozet, Alexandre Devaux, Denis Béchet, Jean-Michel Franchet, Antoine Organista, and Florence Hamon. 2015. "Relationships between Microstructural Parameters and Time-Dependent Mechanical Properties of a New Nickel-Based Superalloy AD730™" Metals 5, no. 4: 2236-2251. https://doi.org/10.3390/met5042236