Abstract:
In Ni-base superalloys, the minimum creep rate is due to a small transition zone associated with a process dominated by hardening (primary creep) and recovery (tertiary creep) simultaneously. The high apparent activation energies obtained through the differential temperature creep test in Ni-base superalloy IN-X750 are attributed to changes in the substructure. When the differential change produced in temperature does not modify the substructure, the apparent activation energy by creep obtained is very approximate to the self-diffusion energy in volume of the Ni.
Registro:
Documento: |
Artículo
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Título: | On apparent activation energies of creep in nickel-base superalloys |
Autor: | Picasso, A.C.; Marzocca, A.J. |
Ciudad: | Exeter |
Filiación: | Inst. de Fis. de Materiales Tandil, Univ. Nac. Ctro. Provincia Buenos A., Tandil, Provincia de Buenos Aires, Argentina Comn. Invest. Cie. la Provincia de, Buenos Aires, Argentina Departamento de Física, Fac. Cie. Exact. y Nat., Univ. B., Buenos Aires, Argentina
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Palabras clave: | Activation energy; Creep testing; Crystal lattices; Diffusion in solids; Enthalpy; Point defects; Strain rate; Stress analysis; Superalloys; Vacancies; Nickel alloys |
Año: | 1999
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Volumen: | 41
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Número: | 8
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Página de inicio: | 797
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Página de fin: | 802
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DOI: |
http://dx.doi.org/10.1016/S1359-6462(99)00229-8 |
Título revista: | Scripta Materialia
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Título revista abreviado: | Scripta Mater
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ISSN: | 13596462
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CODEN: | SCMAF
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13596462_v41_n8_p797_Picasso |
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Citas:
---------- APA ----------
Picasso, A.C. & Marzocca, A.J.
(1999)
. On apparent activation energies of creep in nickel-base superalloys. Scripta Materialia, 41(8), 797-802.
http://dx.doi.org/10.1016/S1359-6462(99)00229-8---------- CHICAGO ----------
Picasso, A.C., Marzocca, A.J.
"On apparent activation energies of creep in nickel-base superalloys"
. Scripta Materialia 41, no. 8
(1999) : 797-802.
http://dx.doi.org/10.1016/S1359-6462(99)00229-8---------- MLA ----------
Picasso, A.C., Marzocca, A.J.
"On apparent activation energies of creep in nickel-base superalloys"
. Scripta Materialia, vol. 41, no. 8, 1999, pp. 797-802.
http://dx.doi.org/10.1016/S1359-6462(99)00229-8---------- VANCOUVER ----------
Picasso, A.C., Marzocca, A.J. On apparent activation energies of creep in nickel-base superalloys. Scripta Mater. 1999;41(8):797-802.
http://dx.doi.org/10.1016/S1359-6462(99)00229-8