Effect of posttreatments on the performance of tungsten carbide (K20) tool while machining (turning) of Inconel 718

Tests were run on a 30-hp Mazak slant turn lathe machining Inconel 718 with a 883 grade tungsten carbide button insert. The purpose of the tests was to evaluate the regenerative chatter theory of reference 1 and the chatter sensor and adaptive control strategies it predicts. The cutting system’s mechanical response was measured by shaking it at constant force through the swept frequency range of 30 to 1000 Hz. From these tests and static stiffness tests, the system’s effective mass, damping, and stiffness were measured. Cutting force tests were run to measure the machining system’s cutting compliance. The results of the shake and cutting tests were substituted into the regenerative stability model to predict the machine’s chatter behavior. The theory was consistent with test observations.

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Deformation of Tungsten Carbide Tools when Cutting Inconel 718

Proceedings of the Sixteenth International Machine Tool Design and Research Conference ◽

10.1007/978-1-349-81544-9_72 ◽

1976 ◽

pp. 565-572 ◽

Cited By ~ 1

Author(s):

A. E. Focke ◽

F. E. Westermann ◽

A. Ermi ◽

J. Yavelak ◽

M. Hoch

Keyword(s):

Tungsten Carbide ◽

Inconel 718

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Adhesion of Inconel 718 on Uncoated Tungsten Carbide Inserts in Interrupted Orthogonal Machining under MQL

Procedia CIRP ◽

10.1016/j.procir.2021.10.031 ◽

2021 ◽

Vol 103 ◽

pp. 194-199

Author(s):

Youssef Alammari ◽

Ivan Iovkov ◽

Jannis Saelzer ◽

Tobias Wolf ◽

Dirk Biermann

Keyword(s):

Tungsten Carbide ◽

Inconel 718 ◽

Orthogonal Machining ◽

Carbide Inserts

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The Nature of Delta Phase Precipitation in Inconel 718

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100055916 ◽

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).

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