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
Experimental and simulated investigations of low cycle fatigue behavior in a nickel-based superalloy with different volume fractions of δ phase
Guang-Jian Yuan,Run-Zi Wang,Wen-Bo Zhu,Dong-Feng Li,Yong Zhang,Xian-Cheng Zhang,Shan-Tung Tu +6 more
TL;DR: In this paper, the authors investigated the fatigue crack initiation life and damage mechanisms of three heat-treated nickel-based alloy with different volume fractions of δ phase based on experiment and crystal plasticity simulation.
Journal ArticleDOI
Using Variant Selection to Facilitate Accurate Fitting of γ ″ Peaks in Neutron Diffraction
Ruiyao Zhang,H. L. Qin,Z. N. Bi,Jun Li,Shiladitya Paul,T. L. Lee,Bogdan Nenchev,J. Zhang,Saurabh Kabra,Joe Kelleher,Hongbiao Dong +10 more
TL;DR: In this article, a variant selection method was proposed to increase the intensity of γ″ peaks and to facilitate accurate fitting, which resulted in greater peak intensities in neutron diffraction patterns, allowing both the Pawley refinement and single peak fitting to be performed.
Journal ArticleDOI
Study of pre-precipitated δ phase promoting deformation twinning and recrystallization behavior of Inconel 718 superalloy during hot compression
Wenxiang Jiang,Junxia Lu,Hao Guan,Mingming Wang,Xiaopeng Cheng,Linlin Liu,Xianqiang Liu,Jian Wang,Yuefei Zhang,Ze Zhang,Weitong Lin,Jing Shu Hu +11 more
Journal ArticleDOI
Creep Deformation of Allvac 718Plus
TL;DR: In this paper, the creep deformation behavior of Allvac 718Plus was studied over the temperature range of 923 K to 1005 K (650 K to 732 K) at initial applied stress levels ranging from 517 to 655 MPa.
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.
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