Interplay of Chemistry and Deformation-Induced Defects on Facilitating Topologically-Close-Packed Phase Precipitation in Nickel-Base Superalloys

2021 ◽  
Author(s):  
Peng Zhao ◽  
G. Xie ◽  
Chunjin Chen ◽  
Xuelu Wang ◽  
Panlin Zeng ◽  
...  
Keyword(s):  
Phase Precipitation ◽  
Topologically Close Packed ◽  
Nickel Base Superalloys ◽  
Nickel Base ◽  
Induced Defects

Thermodynamic Study on Equilibrium Phases in Nickel-Base Single Crystal Superalloys

2019 ◽  
Vol 944 ◽  
pp. 149-154
Author(s):  
Jin San Wang
Keyword(s):  
Liquid Phase ◽  
Single Crystal ◽  
Thermodynamic Calculation ◽  
Thermodynamic Study ◽  
Third Generation ◽  
Phase Precipitation ◽  
Topologically Close Packed ◽  
Nickel Base ◽  
Equilibrium Phases ◽  
Calculation Software

In order to improve the composition and microstructure of nickel-base single crystal superalloys, equilibrium phases of third generation single crystal superalloys RenéN6 and CMSX-10 have been researched by using thermodynamic calculation software JMatPro. The calculated results indicated that the two superalloys have the same equilibrium phases, such as liquid phase, γ phase, γ’ phase and TCP (topologically close-packed phases), however, there are differences in the quantity and temperature range. RenéN6 alloy has higher content of μ phase. And CMSX-10 alloy has higher γ’ phase precipitation temperature and more γ’ phase precipitates.

The Nature of Delta Phase Precipitation in Inconel 718

1982 ◽  
Vol 40 ◽  
pp. 724-725
Author(s):  
L. S. Lin ◽  
C. C. Law
Keyword(s):  
Inconel 718 ◽  
Base Alloy ◽  
High Strength ◽  
Physical Metallurgy ◽  
Nickel Base Alloy ◽  
Phase Precipitation ◽  
Weight Percentage ◽  
Delta Phase ◽  
The Subject ◽  
Nickel Base

Inconel 718, a precipitation hardenable nickel-base alloy, is a versatile high strength, weldable wrought alloy that is used in the gas turbine industry for components operated at temperatures up to about 1300°F. The nominal chemical composition is 0.6A1-0.9Ti-19.OCr-18.0Fe-3Mo-5.2(Cb + Ta)- 0.1C with the balance Ni (in weight percentage). The physical metallurgy of IN 718 has been the subject of a number of investigations and it is now established that hardening is due, primarily, to the formation of metastable, disc-shaped γ" an ordered body-centered tetragonal structure (DO2 2 type superlattice).

Sign in / Sign up

Export Citation Format

Share Document