Journal ArticleDOI
Precipitation of the δ-Ni 3 Nb phase in two nickel base superalloys
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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Book ChapterDOI
Serrated Yielding in Alloy 718
TL;DR: In this article, the authors reported the results of detailed investigation carried out on serrated yielding phenomenon in Alloy 718 in three different microstructural conditions viz. solution annealed (ST), γ′′ precipitated (STA), and δ precipitated(DELTA).
Journal ArticleDOI
Precipitation behavior of γ in severely plastic deformed Ni-base alloys
Il Ho Kim,S.I. Kwun +1 more
TL;DR: In this paper, the precipitation behaviors of Ni3Nb in four Ni-base alloys were investigated and the aging treatment was employed at either 600°C or 720°C for 20 hrs.
Journal ArticleDOI
Selective Laser Melting of Inconel 718/TiC Composite: Effect of TiC Particle Size
TL;DR: In this article , the effect of the size of the TiC particle on the microstructure and properties of a composite material based on the heat-resistant nickel alloy Inconel 718 was investigated.
Journal ArticleDOI
Phase field model for multiphase alloys under arbitrary thermal history: An application to IN718 super-alloy
TL;DR: In this paper, a phase-field framework was proposed to predict the evolution of precipitate microstructure under arbitrary thermal history, incorporating nucleation, growth and transformation by taking into account interfacial, chemical and elastic energies.
Journal ArticleDOI
Influence of sintering temperature on microstructure and mechanical properties of graphene-reinforced Inconel 738 LC composites
O. F. Ogunbiyi,Smith Salifu,Rotimi Sadiku,Tamba Jamiru,O. T. Adesina,Olanrewaju Seun Adesina,Olanrewaju Seun Adesina +6 more
TL;DR: In this article, the microhardness, porosity and fracture toughness of the graphene-reinforced Inconel 738LC matrix composites were obtained using optical microscope, scanning electron microscope and X-ray diffraction machine.
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.
Book
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)
Morphology of y’ and y” precipitates and thermal stability of inconel 718 type alloys
R. Cozar,André Pineau +1 more