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Gamma-gamma prime-gamma double prime dual-superlattice superalloys

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Publication Date: 2017-07-15

Journal Title: Scripta Materialia

Publisher: Elsevier

Volume: 136

Pages: 136-140

Language: English

Type: Article

This Version: VoR

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Citation: Mignanelli, P. M., Jones, N. G., Pickering, E., Messé, O., Rae, C. M., Hardy, M., & Stone, H. J. (2017). Gamma-gamma prime-gamma double prime dual-superlattice superalloys. Scripta Materialia, 136 136-140.

Abstract: Improving the efficiency of gas turbine engines requires the development of new materials capable of operating at higher temperatures and stresses. Here, we report on a new polycrystalline nickel-base superalloy that has exceptional strength and thermal stability. These properties have been achieved through a four-element composition that can form both gamma prime and gamma double prime precipitates in comparable volume fractions, creating an unusual dual-superlattice microstructure. Alloying studies have shown that further property improvements can be achieved, and that with development such alloys may be suitable for future engine applications.

Sponsorship: EPSRC (EP/H022309/1)

EPSRC (EP/H500375/1)

EPSRC (EP/M005607/1)

EPSRC (1146959)


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Rights: Attribution 4.0 International

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Autor: Mignanelli, Paul Michael Jones, Nicholas GwilymPickering, EJMessé, OMDMRae, Catherine MaryHardy, MC Stone, Howard James



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