Stress-relaxation in bending of Inconel 718, at 773 and 823 K

Stress-relaxation data in Inconel 718, both at 773 and 823 K and up to times of the order of 4000 h, in specimens with different thermal treatments, are presented. No substantial differences are encountered, between 773 and 823 K, in the stress-relaxation behaviour of the age-hardened material. In t...

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Autores principales: Povolo, F., Reggiardo, J.F.
Formato: JOUR
Materias:
CRYSTALS - Dislocations
METALLOGRAPHY - Precipitation
RELAXATION PROCESSES - Measurements
SUPERALLOYS - Heat Treatment
BENDING
GLIDING DISLOCATIONS
INCONEL 718
STRESS-RELAXATION CURVES
THERMAL ACTIVATION
NICKEL AND ALLOYS
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00222461_v23_n1_p241_Povolo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00222461_v23_n1_p241_Povolo
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spelling todo:paper_00222461_v23_n1_p241_Povolo2023-10-03T14:28:54Z Stress-relaxation in bending of Inconel 718, at 773 and 823 K Povolo, F. Reggiardo, J.F. CRYSTALS - Dislocations METALLOGRAPHY - Precipitation RELAXATION PROCESSES - Measurements SUPERALLOYS - Heat Treatment BENDING GLIDING DISLOCATIONS INCONEL 718 STRESS-RELAXATION CURVES THERMAL ACTIVATION NICKEL AND ALLOYS Stress-relaxation data in Inconel 718, both at 773 and 823 K and up to times of the order of 4000 h, in specimens with different thermal treatments, are presented. No substantial differences are encountered, between 773 and 823 K, in the stress-relaxation behaviour of the age-hardened material. In the as-received and the solution-annealed specimens, on the contrary, the stress-relaxation curves indicate that the structure does not remain stable during relaxation and the internal stress decreases continuously as the applied stress decreases. The structure is stable, for all the thermal treatments, during stress relaxation at 773 K. Finally, the data are interpreted in terms of an interaction between gliding dislocations and precipitates as indicated by the large activation volumes involved and the negligible influence of thermal activation. © 1988 Chapman and Hall Ltd. Fil:Povolo, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00222461_v23_n1_p241_Povolo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic CRYSTALS - Dislocations
METALLOGRAPHY - Precipitation
RELAXATION PROCESSES - Measurements
SUPERALLOYS - Heat Treatment
BENDING
GLIDING DISLOCATIONS
INCONEL 718
STRESS-RELAXATION CURVES
THERMAL ACTIVATION
NICKEL AND ALLOYS
spellingShingle CRYSTALS - Dislocations
METALLOGRAPHY - Precipitation
RELAXATION PROCESSES - Measurements
SUPERALLOYS - Heat Treatment
BENDING
GLIDING DISLOCATIONS
INCONEL 718
STRESS-RELAXATION CURVES
THERMAL ACTIVATION
NICKEL AND ALLOYS
Povolo, F.
Reggiardo, J.F.
Stress-relaxation in bending of Inconel 718, at 773 and 823 K
topic_facet CRYSTALS - Dislocations
METALLOGRAPHY - Precipitation
RELAXATION PROCESSES - Measurements
SUPERALLOYS - Heat Treatment
BENDING
GLIDING DISLOCATIONS
INCONEL 718
STRESS-RELAXATION CURVES
THERMAL ACTIVATION
NICKEL AND ALLOYS
description Stress-relaxation data in Inconel 718, both at 773 and 823 K and up to times of the order of 4000 h, in specimens with different thermal treatments, are presented. No substantial differences are encountered, between 773 and 823 K, in the stress-relaxation behaviour of the age-hardened material. In the as-received and the solution-annealed specimens, on the contrary, the stress-relaxation curves indicate that the structure does not remain stable during relaxation and the internal stress decreases continuously as the applied stress decreases. The structure is stable, for all the thermal treatments, during stress relaxation at 773 K. Finally, the data are interpreted in terms of an interaction between gliding dislocations and precipitates as indicated by the large activation volumes involved and the negligible influence of thermal activation. © 1988 Chapman and Hall Ltd.
format JOUR
author Povolo, F.
Reggiardo, J.F.
author_facet Povolo, F.
Reggiardo, J.F.
author_sort Povolo, F.
title Stress-relaxation in bending of Inconel 718, at 773 and 823 K
title_short Stress-relaxation in bending of Inconel 718, at 773 and 823 K
title_full Stress-relaxation in bending of Inconel 718, at 773 and 823 K
title_fullStr Stress-relaxation in bending of Inconel 718, at 773 and 823 K
title_full_unstemmed Stress-relaxation in bending of Inconel 718, at 773 and 823 K
title_sort stress-relaxation in bending of inconel 718, at 773 and 823 k
url http://hdl.handle.net/20.500.12110/paper_00222461_v23_n1_p241_Povolo
work_keys_str_mv AT povolof stressrelaxationinbendingofinconel718at773and823k
AT reggiardojf stressrelaxationinbendingofinconel718at773and823k
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