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
The Growth of γ' and γ'' Precipitates in Nickel-base Superalloys
Journal ArticleDOI
Influence of Precipitated Phase Formation on Recrystallization Behavior of Superalloy 718
Hwa-Teng Lee,Wen Hsin Hou +1 more
TL;DR: In this paper, the grain size of superalloy 718 is controlled during manufacturing by inducing full dynamic recrystallization through means of a carefully-controlled hot forming process performed in a powerful and precise forging machine.
Journal ArticleDOI
Experimental Investigation of Delta Phase Precipitation in Inconel 625 Superalloy Aged at 550, 625 and 725 °C
Renato Baldan,Antonio Augusto Araújo Pinto da Silva,Tiemi Manfio Tanno,Eliara Torres da Costa,João Victor Negri Brentegani,Antônio Augusto Couto +5 more
TL;DR: In this paper, the kinetic energy of δ-phase precipitation in the microstructure of Inconel 625 nickel-based superalloy aged at 550, 625 and 725 °C up to 1000 h was investigated.
Journal ArticleDOI
Effect of heat treatments on Inconel 625 fabricated by wire and arc additive manufacturing: an in situ synchrotron X-ray diffraction analysis
Tiago A. Rodrigues,Francisco Werley Cipriano Farias,J. A. Avila,E. Maawad,Norbert Schell,Telmo G. Santos,João Pedro Oliveira +6 more
TL;DR: In this article , the effect of heat treatments on wire and arc additively manufactured Inconel 625 parts was investigated using in situ synchrotron X-ray diffraction and hardness testing.
Journal ArticleDOI
Effects of Different Wire Drawing Routes on Grain Boundary Character Distribution, Microtexture, δ-Phase Precipitation, Grain Size and Room Temperature Mechanical Behavior of Alloy 718
Luiz Maurício Barreto de Azevedo,Arthur Ribeiro Figueiredo,Flávia da Cruz Gallo,Leonardo Sales Araújo,Francisco Werley Cipriano Farias,Rodolfo da Silva Teixeira,Thiago Marques Ivaniski,Luiz Henrique de Almeida,Matheus Campolina Mendes +8 more
TL;DR: In this article, the deformation gradient along wire cross section plays an important role in affecting microstructural features, such as δ precipitation, GBCD and microtexture.
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.
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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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