The performance Of DLC-coated and uncoated ultra-fine carbide tools in micromilling of Inconel 718

2015 ◽  
Vol 41 ◽  
pp. 135-144 ◽  
Author(s):  
İrfan Ucun ◽  
Kubilay Aslantas ◽  
Fevzi Bedir
Keyword(s):  
Inconel 718 ◽  
Fine Carbide

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).

TEM study on fine carbide precipitates and dislocation cell structure

1990 ◽  
Vol 48 (4) ◽  
pp. 904-905
Author(s):  
Mengzhe Chen ◽  
Siqin Wang ◽  
Jun Ke
Keyword(s):  
Carbide Particle ◽  
Cell Structure ◽  
Ferrite Matrix ◽  
Dislocation Cell ◽  
Isothermal Treatment ◽  
Particle Sizes ◽  
Dislocation Cell Structure ◽  
Thin Foils ◽  
Hsla Steels ◽  
Fine Carbide

A series of investigations have been conducted into the nature and origin of the dislocation cell structure. R.J.Klassen calculated that the dislocation cell limiting size in pure ferrite matrix is about 0.4 μm. M.N.Bassion estimated the size of dislocation cell in deformed ferrite of HSLA steels to be of the same order.In this paper, TEM observation has been concentrated on the interaction of fine carbide precipitates with dislocation cell structure in deformed Fe-C-V (0.05%C, 0.13% and 0.57%V) and Fe-C-Nb (0.07 %C and 0.04%Nb) alloys and compared with that in Fe-C (0.05%). Specimens were austenitized at 1500 “C/20 min and followed by isothermal treatment at 750 °C and 800 “C for 20, 40 and 120 minutes . The carbide particle sizes in these steels are from 9 to 86nm measured from carbon extraction replicas. Specimens for TEM were cut from differently deformed areas of tensile specimens deformed at room temperture. The thin foils were jet electropolished at -20 C in a solution of 10% perchloric acid and 90% ethanol. The TEM observation was carried out in JEM 100CX , EM420 at 100kv and JEM 2000FX at 200kv.

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

High temperature mechanical properties of Inconel 718 pulsed Nd–YAG laser welds

2006 ◽  
Vol 23 (1) ◽  
pp. 29-37 ◽  
Author(s):  
G.D. Janaki Ram ◽  
A. Venugopal Reddy ◽  
K. Prasad Rao ◽  
G. Madhusudhan Reddy
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Inconel 718 ◽  
Yag Laser ◽  
High Temperature Mechanical Properties ◽  
Laser Welds
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