Mitigation of solute segregation during solutionization of selective laser melted Inconel 718 through micron-TiC addition

2021 ◽  
pp. 163224
Author(s):  
Duy Nghia Luu ◽  
Wei Zhou ◽  
Sharon Mui Ling Nai ◽  
Yongjing Yang
Keyword(s):  
Inconel 718 ◽  
Solute Segregation

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).

High-resolution x-ray analysis of dislocation networks nn tilt boundaries

1988 ◽  
Vol 46 ◽  
pp. 612-613
Author(s):  
J. R. Michael ◽  
C. H. Lin ◽  
S. L. Sass
Keyword(s):  
Grain Boundaries ◽  
Analytical Electron Microscopy ◽  
Solute Segregation ◽  
X Ray ◽  
Periodic Arrays ◽  
Analytical Electron ◽  
Primary Dislocation ◽  
Tilt Boundaries ◽  
Polycrystalline Solids ◽  
Twist Boundaries

The segregation of solute atoms to grain boundaries in polycrystalline solids can be responsible for embrittlement of the grain boundaries. Although Auger electron spectroscopy (AES) and analytical electron microscopy (AEM) have verified the occurrence of solute segregation to grain boundaries, there has been little experimental evidence concerning the distribution of the solute within the plane of the interface. Sickafus and Sass showed that Au segregation causes a change in the primary dislocation structure of small angle [001] twist boundaries in Fe. The bicrystal specimens used in their work, which contain periodic arrays of dislocations to which Au is segregated, provide an excellent opportunity to study the distribution of Au within the boundary by AEM.The thin film Fe-0.8 at% Au bicrystals (composition determined by Rutherford backscattering spectroscopy), ∼60 nm thick, containing [001] twist boundaries were prepared as described previously. The bicrystals were analyzed in a Vacuum Generators HB-501 AEM with a field emission electron source and a Link Analytical windowless x-ray detector.

Hole drilling of Inconel 718 by high intensity pulsed UV laser

2001 ◽  
Author(s):  
Qihong Wu ◽  
Yurong Ma ◽  
Jiansheng Jie ◽  
Bin Miao ◽  
Rongehuan Fang ◽  
...  
Keyword(s):  
High Intensity ◽  
Inconel 718 ◽  
Hole Drilling ◽  
Uv Laser

Transient predictions of CO2 spot welds in inconel 718

1993 ◽  
Author(s):  
John A. Hopkins ◽  
T. Dwayne McCay ◽  
Mary Helen McCay ◽  
Arsev Eraslan
Keyword(s):  
Inconel 718 ◽  
Spot Welds

Fatigue Fracture of AM Inconel 718: Surface Effects on Tension-Torsion Capability

2021 ◽  
Author(s):  
Jacob Rome ◽  
Vinay K. Goyal ◽  
Dhruv Patel ◽  
Julian Lohser
Keyword(s):  
Fatigue Fracture ◽  
Inconel 718 ◽  
Surface Effects

Evaluation of uncertainty associated with fracture toughness of Inconel 718 using the SNTT method

2019 ◽  
Author(s):  
Guilherme Rodrigues ◽  
Monique Freitas ◽  
Henry Hwang ◽  
Sinésio Franco ◽  
Rosenda Arencibia ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Inconel 718
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