Journal ArticleDOI
Short term precipitation kinetics of delta phase in strain free Inconel* 718 alloy
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TLDR
Inconel 718 alloy has been used to control short term precipitation of delta phase in Inconel718 alloy as discussed by the authors, this precipitation has been shown to control grain growth during forging.Abstract:
Understanding and control of short term precipitation of delta phase in Inconel 718 alloy is of importance as it is used to control grain growth during forging. This precipitation has been ...read more
Citations
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δ Phase precipitation in Inconel 718 and associated mechanical properties
TL;DR: In this paper, several heat treatments enabling the precipitation of the δ phase in various proportions and morphologies were conducted, and the results revealed that when γ″ and δ precipitates coexist, the material remains hardened regardless of the amount of δ.
Journal ArticleDOI
TEM Study of High-Temperature Precipitation of Delta Phase in Inconel 718 Alloy
TL;DR: Inconel 718 is widely used because of its ability to retain strength at up to 650 ∘C for long periods of time through coherent metastable Ni 3Nb precipitation associated with a smaller volume fraction of Ni 3Al precipitates.
Journal ArticleDOI
Computer simulation of phase transformation and plastic deformation in IN718 superalloy: Microstructural evolution during precipitation
Ning Zhou,Duchao Lv,Hualei Zhang,Donald McAllister,F. Zhang,Michael J. Mills,Yunzhi Wang,Yunzhi Wang +7 more
TL;DR: In this paper, the phase-field method is used to simulate statistically representative multiphase microstructures observed in the alloy, the Kim-Kim-Suzuki treatment of interfaces is employed.
Journal ArticleDOI
Some features of anisothermal solid-state transformations in alloy 718
TL;DR: In this paper, an attempt to use differential thermal analysis to study anisothermal precipitation of both the stable delta and the metastable gamma-second phases during cooling of alloy Inconel 718 was made.
Journal ArticleDOI
Influence of strain rate on subsolvus dynamic and post-dynamic recrystallization kinetics of Inconel 718
TL;DR: In this paper, the influence of strain rate on dynamic and post-dynamic recrystallization kinetics of Inconel 718 was investigated by performing hot compression tests at constant strain rate in the range [ 0.001 ; 1 ] s − 1 in the δ -subsolvus domain, with or without post-deformation holding at the deformation temperature.
References
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Journal ArticleDOI
Precipitation of the δ-Ni 3 Nb phase in two nickel base superalloys
TL;DR: In this article, the precipitation of the metastable δ-Ni3Nb phase has been studied in two niobium bearing nickel base superalloys and the morphology and distribution of precipitates have been examined and the crystallographic orientation relationship between the austenite and the δ phases has been determined.
Journal ArticleDOI
Some aspects of the precipitation of metastable intermetallic phases in INCONEL 718
TL;DR: In this article, the authors investigated the precipitation of the metastable intermetallic phases (γ and γ) in the commercial nickel base superalloy, INCONEL 718, over a wide range of aging temperatures.
Journal ArticleDOI
Structural characterization of the aged Inconel 718
C. Slama,Mohieddine Abdellaoui +1 more
TL;DR: In this paper, the aging of the NC 19 Fe Nb alloy (Inconel 718), previously quenched from 990°C, is characterized by X-ray diffraction, transmission electron microscopy and micro-hardness investigation.
Journal ArticleDOI
Strengthening mechanisms in Inconel 718 superalloy
M. C. Chaturvedi,Ya-fang Han +1 more
TL;DR: In this article, the yielding behavior of underaged Inconel alloy 718, which is precipitation hardened by coherent ordered bct γ″ and ordered fcc γ′ phases, has been studied.
Journal ArticleDOI
Aging of the Inconel 718 alloy between 500 and 750 °C
C. Slama,C. Servant,G. Cizeron +2 more
TL;DR: In this paper, the aging of the NC 19 Fe Nb alloy (Inconel 718), previously quenched from 990{degree}C, is characterized by a hardness peak at 650°degree, then a maximum in hardness at about 750°degree.
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Morphology of y’ and y” precipitates and thermal stability of inconel 718 type alloys
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