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Melt spinning Ni-based superalloys
Metals Technology, 1983AbstractThe data relating to the production of tapes by chill-block melt spinning of a Ni-based crystalline superalloy (API) are compared with those presented by previous workers for amorphous and low-melting-point crystalline alloys. Comparisons based on fitting the data to established equations shed light upon the physical significance of the ...
S. J. Piggs, J. A. Charles
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Hydride formation in a Ni-base superalloy
Metallurgical Transactions A, 1981X-ray diffraction, optical- and scanning-electron metallographic and microhardness studies have been conducted in pure Ni and a Ni-base alloy (HASTELLOY Alloy C-276) in an effort to determine if hydrides form in the alloy during cathodic charging in the presence of a strong H-recombination poison. The studies indicate that hydrides do form and that the
Ellina Lunarska-Borowiecka +1 more
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Thermal characterization of a Ni-based superalloy
Thermochimica Acta, 2002Abstract Ni-based superalloys are usually employed in industrial applications where good mechanical performance, corrosion and oxidation resistance at high temperatures is required. Samples collected from a gas turbine rotor blade were used in the present study.
John H Suwardie +2 more
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The Role of Interfaces in Ni-Base Superalloys
1968A typical commercial Ni-base superalloy consists of a coherent precipitate of γ′ (basically Ni3(Al,Ti)) in a matrix of γ (Ni-solid solution), interspersed with minor carbides and eutectics. It contains, therefore, three types of interfaces; (1) grain boundaries, (2) coherent phase boundaries γ/γ′ and (3) incoherent phase boundaries γ + γ′Vcarbide.
S. M. Copley +2 more
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On the Temperature Limits of Ni-Based Superalloys
2020The peculiar atomic structure of γ′ precipitates [Ni3(Al/Ti)-L12] in Ni-based superalloys produces high-energy faults when dislocations glide them, giving their significant strength at high temperatures. The mechanisms behind the strength failure of these alloys above 800 °C are still controversial.
Daniel Barba +5 more
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On phase transformations in a Ni-based superalloy
Philosophical Magazine, 2013In this study, a particular nickel-based superalloy has been studied by transmission electron microscopy and the results are discussed in terms of phase transformations that may have taken place. The alloy has been found to consist of three major phases; a FCC γ phase containing a random distribution of nearly spherical γ′ – Ni3Al(Ti) – precipitates ...
Sirous Asgari +3 more
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The Anodic Dissolution of a Ni-Base Superalloy
Corrosion, 1983A single phase nickel base superalloy, HASTELLOY(1) Alloy C-276, was anodically polarized in 0.5 N NaCl at 70 C, and the concentrations of metal-ion complexes in solution were determined. Relative dissolution rates of alloying elements were obtained and selectivity coefficients were calculated.
M. A. Cavanaugh +3 more
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Relation between the microstructure and microchemistry in Ni‐based superalloy
Surface and Interface Analysis, 2012Ni‐based superalloys with biphasic structure (γ + γ′) are widely used for high‐temperature applications, such as disks and blades of gas turbines and aeronautical engines. For these applications, the stability at high temperature is of utmost importance, in particular the coarsening and the morphological changes of γ′ may be seriously detrimental for ...
Kaciulis S +5 more
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