Creep Properties of Directionally Solidified Nb-Modified Ni-Base Superalloy, Mar-M247 (2018)
- Authors:
- Autor USP: NUNES, CARLOS ANGELO - EEL
- Unidade: EEL
- DOI: 10.1007/s11665-018-3699-6
- Subjects: ESTABILIDADE; NIÓBIO; LIGAS REFRATÁRIAS
- Keywords: creep; Mar-M247; Ni-base superalloy; niobium; stability
- Language: Inglês
- Abstract: The Ni-base superalloy Mar-M247 is widely used for elevated-temperature applications in both equiaxed and directionally solidified forms. The alloy contains about 3 wt.% Ta. Due to the cost and density of Ta, an atom-for-atom substitution of Nb for Ta was investigated. The creep properties in the temperature range of 750-950 °C and stresses ranging from 200 to 1000 MPa were determined. In general, the creep properties of the Nb-modified Mar-M247 material were very similar to those of Mar-M247 samples at 750 and 850 °C. However, the Mar-M247 samples exhibited superior creep properties at 950 °C. The lower creep properties of the Nb-modified Mar-M247 are likely due to the finer starting microstructure, more rapid coarsening rate of the γ′ and reduced γ′ strengthening effect (i.e., APB energy) of Nb, compared to Ta. No evidence of TCP phases was observed in either alloy.
- Imprenta:
- Source:
- Título: Journal of materials engineering and performance
- ISSN: 1059-9495
- Volume/Número/Paginação/Ano: v. 27, p. 5744–5751, 2018
- Este periódico é de assinatura
- Este artigo NÃO é de acesso aberto
- Cor do Acesso Aberto: closed
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ABNT
COSTA, Alex Matos da Silva et al. Creep Properties of Directionally Solidified Nb-Modified Ni-Base Superalloy, Mar-M247. Journal of materials engineering and performance, v. 27, p. 5744–5751, 2018Tradução . . Disponível em: https://doi.org/10.1007/s11665-018-3699-6. Acesso em: 27 dez. 2025. -
APA
Costa, A. M. da S., Hawk, E., Dansbury, J., Nunes, C. A., & Fuchs, G. E. (2018). Creep Properties of Directionally Solidified Nb-Modified Ni-Base Superalloy, Mar-M247. Journal of materials engineering and performance, 27, 5744–5751. doi:10.1007/s11665-018-3699-6 -
NLM
Costa AM da S, Hawk E, Dansbury J, Nunes CA, Fuchs GE. Creep Properties of Directionally Solidified Nb-Modified Ni-Base Superalloy, Mar-M247 [Internet]. Journal of materials engineering and performance. 2018 ; 27 5744–5751.[citado 2025 dez. 27 ] Available from: https://doi.org/10.1007/s11665-018-3699-6 -
Vancouver
Costa AM da S, Hawk E, Dansbury J, Nunes CA, Fuchs GE. Creep Properties of Directionally Solidified Nb-Modified Ni-Base Superalloy, Mar-M247 [Internet]. Journal of materials engineering and performance. 2018 ; 27 5744–5751.[citado 2025 dez. 27 ] Available from: https://doi.org/10.1007/s11665-018-3699-6 - Effect of zirconium addition on the phase transformations in as-cast and heat-treated Ti–Zr–Si–B alloys
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- Dossiê: Nióbio
Informações sobre o DOI: 10.1007/s11665-018-3699-6 (Fonte: oaDOI API)
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