Journal ArticleDOI
Precipitation of the δ-Ni 3 Nb phase in two nickel base superalloys
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TLDR
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.Abstract:
The precipitation of the equilibrium δ-Ni3Nb phase has been studied in two niobium bearing nickel base superalloys—INCONEL 718 and INCONEL* 625—both of which are hardenable by the precipitation of the metastableγ″-Ni3Nb phase. The morphology and the distribution of precipitates have been examined and the crystallographic orientation relationship between the austenite and theδ phases has been determined. The nucleation of theδ phase at stacking faults within pre-existing δ" precipitates has been discussed.read more
Citations
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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
Mechanical and Microstructural Investigation of Nickel-Based Superalloy IN718 Manufactured by Selective Laser Melting (SLM)
TL;DR: In this article, the authors compared the microstructure and the mechanical properties of the produced specimens, directly after the manufacturing process and additionally after two diverse heat treatments subsequent to manufacturing process.
Journal ArticleDOI
On the crystallography of precipitation
TL;DR: In this paper, a general approach for investigating the crystallography of precipitation is developed from a systematic analysis of interfacial structures, where the central hypothesis is that a habit plane or major facet developed in a precipitation reaction is the physical realization of a singular interface.
Journal ArticleDOI
Superior creep strength of a nickel-based superalloy produced by selective laser melting
M. Pröbstle,Steffen Neumeier,J. Hopfenmüller,Lisa P. Freund,Thomas Niendorf,Dieter Schwarze,Matthias Göken +6 more
TL;DR: In this paper, the creep properties of a polycrystalline nickel-based superalloy produced via selective laser melting were investigated, and it was shown that the additively manufactured material showed superior creep strength compared to conventional cast and wrought material.
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.
References
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Book
A handbook of lattice spacings and structures of metals and alloys
W. B. Pearson,George H. Vineyard +1 more
TL;DR: The Handbook of Lattice spacings and structures of metals and alloys as discussed by the authors is a handbook of argumentative essay structure spacing and lattice plane model modified by the incorporation of thermodynamic functions appropriate to the f.c.
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Modern physical metallurgy
TL;DR: Modern Physical Metallurgy as mentioned in this paper describes the fundamental principles of physical metallurgy and the basic techniques for assessing microstructure and provides a balanced coverage of properties, characterization, phase transformations, crystal structure, and corrosion not available in other texts.
Book ChapterDOI
Configurational Thermodynamics of Solid Solutions
TL;DR: In this article, a review of theoretical models applicable to concentrated solid solutions is presented, focusing on concentrated solutions because dilute ones can be considered as special cases and because the interesting effects of clustering and ordering are most apparent at high solute concentrations.
Journal ArticleDOI
Precipitation of γ in the γ′of nickel-base superalloys
Journal ArticleDOI
Heat treatment of 706 alloy for optimum 1200 °F stress-rupture properties
TL;DR: In this article, a heat treatment for 706 alloy was developed which effectively optimizes the 1200°F stress-rupture properties of the alloy by precipitation of globular to plate-like Ni3Cb/Ni3Ti at the grain boundaries in conjunction with maintaining a fine as-forged grain structure.
Related Papers (5)
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