On apparent activation energies of creep in nickel-base superalloys
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 su...
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| Formato: | JOUR |
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_13596462_v41_n8_p797_Picasso |
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todo:paper_13596462_v41_n8_p797_Picasso2023-10-03T16:10:38Z On apparent activation energies of creep in nickel-base superalloys Picasso, A.C. Marzocca, A.J. Activation energy Creep testing Crystal lattices Diffusion in solids Enthalpy Point defects Strain rate Stress analysis Superalloys Vacancies Nickel alloys 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_13596462_v41_n8_p797_Picasso |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Activation energy Creep testing Crystal lattices Diffusion in solids Enthalpy Point defects Strain rate Stress analysis Superalloys Vacancies Nickel alloys |
| spellingShingle |
Activation energy Creep testing Crystal lattices Diffusion in solids Enthalpy Point defects Strain rate Stress analysis Superalloys Vacancies Nickel alloys Picasso, A.C. Marzocca, A.J. On apparent activation energies of creep in nickel-base superalloys |
| topic_facet |
Activation energy Creep testing Crystal lattices Diffusion in solids Enthalpy Point defects Strain rate Stress analysis Superalloys Vacancies Nickel alloys |
| description |
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. |
| format |
JOUR |
| author |
Picasso, A.C. Marzocca, A.J. |
| author_facet |
Picasso, A.C. Marzocca, A.J. |
| author_sort |
Picasso, A.C. |
| title |
On apparent activation energies of creep in nickel-base superalloys |
| title_short |
On apparent activation energies of creep in nickel-base superalloys |
| title_full |
On apparent activation energies of creep in nickel-base superalloys |
| title_fullStr |
On apparent activation energies of creep in nickel-base superalloys |
| title_full_unstemmed |
On apparent activation energies of creep in nickel-base superalloys |
| title_sort |
on apparent activation energies of creep in nickel-base superalloys |
| url |
http://hdl.handle.net/20.500.12110/paper_13596462_v41_n8_p797_Picasso |
| work_keys_str_mv |
AT picassoac onapparentactivationenergiesofcreepinnickelbasesuperalloys AT marzoccaaj onapparentactivationenergiesofcreepinnickelbasesuperalloys |
| _version_ |
1807318907323678720 |