Journal ArticleDOI
Creep behaviour of Ni-base single-crystal superalloys with various γ' volume fraction
TLDR
In this article, a third generation Ni-base single-crystal superalloy TMS-75 and its γ/γ " tie line alloys were designed to contain various volume fractions of γ, while the compositions of two individual phases were kept the same.About:
This article is published in Acta Materialia.The article was published on 2004-07-12. It has received 444 citations till now. The article focuses on the topics: Superalloy & Creep.read more
Citations
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The Superalloys: Fundamentals and Applications
TL;DR: In this paper, the physical metallurgy of nickel and its alloys is discussed and single crystal superalloys for blade applications for turbine disc applications are discussed. And the role of coatings is discussed.
Journal ArticleDOI
Nickel-Based Superalloys for Advanced Turbine Engines: Chemistry, Microstructure and Properties
Tresa M. Pollock,Sammy Tin +1 more
TL;DR: The chemical, physical, and mechanical characteristics of nickel-based superalloys are reviewed with emphasis on the use of this class of materials within turbine engines as mentioned in this paper, and the role of major and minor alloying additions in multicomponent commercial cast and wrought super-alloys is discussed.
Journal ArticleDOI
A review on fundamental of high entropy alloys with promising high–temperature properties
TL;DR: In this paper, the microstructures of HESAs consisting of γ and γ′ phases are similar to that of Ni-base superalloys and refractory HEAs.
Journal ArticleDOI
Alloys-By-Design: Application to nickel-based single crystal superalloys
TL;DR: In this article, design rules are proposed by which the compositions of nickel-based single crystal superalloys can be chosen systematically, using models for the most important characteristics: creep resistance, microstructural stability, castability, density and cost.
Journal ArticleDOI
Mechanical behavior of high-entropy alloys
TL;DR: In this article, the authors present a comprehensive, critical review of the mechanical behavior of high-entropy alloys and some closely related topics, including thermodynamics and kinetics.
References
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Journal ArticleDOI
Directional coarsening in nickel-base single crystals with high volume fractions of coherent precipitates
Tresa M. Pollock,A.S. Argon +1 more
TL;DR: In this article, the diffusional processes responsible for rafting were investigated on the local scale of the precipitates, with preferential local dissolution of the γ′ and diffusional flow of alloying elements around the periphery of precipitates.
Journal ArticleDOI
Rafting in superalloys
TL;DR: In this article, it was shown that in the elastic regime, the thermodynamic driving force for rafting is proportional to the applied stress, to the difference between the lattice parameters of the γ matrix and the particles, and the difference of their elastic constants.
Journal ArticleDOI
The effect of uniaxial stress on the periodic morphology of coherent gamma prime precipitates in nickel-base superalloy crystals
J. K. Tien,Stephen M. Copley +1 more
TL;DR: In this article, the periodic morphology of cube-shaped, coherent Ni3(Al, Ti) superalloy was found to be influenced by the application of a 〈100〉 oriented uniaxial stress during annealing at elevated temperature.
Journal ArticleDOI
Influence of uniaxial stress on the morphology of coherent precipitates during coarsening—elastic energy considerations
TL;DR: In this article, the influence of uniaxial applied stress on the morphology of coherent precipitates during coarsening is investigated, using the theory of inclusions and inhomogeneities by Eshelby.
Journal ArticleDOI
Dependence of creep strength on the interfacial dislocations in a fourth generation SC superalloy TMS-138
TL;DR: In this article, an important relation between the γ/γ ε interfacial dislocations and the minimum creep rate was found. But this was attributed to the interaction between the −γ/γ −ε interfacial dislocation and slip dislocation in the ε matrix.
Related Papers (5)
Creep resistance of CMSX-3 nickel base superalloy single crystals
Tresa M. Pollock,A.S. Argon +1 more
Nickel-Based Superalloys for Advanced Turbine Engines: Chemistry, Microstructure and Properties
Tresa M. Pollock,Sammy Tin +1 more