Published April 1988 | Version v1
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Ratcheting tests on 17-12 SPH austenitic steel at 600 deg. C

Creators

  • 1. Centre d'Etudes Nucleaires de Saclay, Institut de Recherche Technologique et de Developpement Industriel, Division d'Etude et de Developpement des Reacteurs, Departement des Etudes Mecaniques et Thermiques, Service d'Etudes de Mecanique et Thermique des Structures, Laboratoire des Regles de Dimensionnement et de Mecanique Statique (France)

Description

Thin tubes tests specimens made on 17-12 SPH austenitic steel were submitted to cyclic torsional deformations at 600 deg. C, a constant axial load being applied during the cyclic torsion with a symmetric amplitude. The aim of the tests was to study the effect of hold time at cycle limits (between 10 and 10 000 seconds) on the evolution of maximum stresses and ratcheting. Hold time was observed to significantly reduce the maximum values of the stresses observed in the cycling. Results are in good accordance with a practical rule for evaluation of progressive distortion based on the use of an effective stress determined from the creep curves of material. (authors)

Abstract (French)

Des essais de traction/torsion cyclique sur tubes minces, ont ete pratiques a la temperature de 600 deg. C sur de l'acier austenitique 17-12 SPH. La charge axiale est maintenue constante pendant la torsion cyclique d'amplitude symetrique. Le but des essais etait d'etudier l'influence du temps de maintien aux extremites du cycle (entre 10 et 10 000 secondes) sur l'evolution des contraintes maximales et de la deformation progressive. Le temps de maintien abaisse notablement les contraintes maximales au cours du cyclage. Les resultats observes sont en bon accord avec la regle pratique d'evaluation de la deformation progressive basee sur l'utilisation d'une contrainte effective; celle-ci est determinee a partir des courbes de fluage du materiau. (auteurs)

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Additional details

Additional titles

Original title (French)
Essais de deformation progressive de l'acier 17.12 SPH a la temperature de 600 deg. C

Publishing Information

Imprint Pagination
60 p.
Report number
CEA-N--2555

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
49089191
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
AUSTENITIC STEELS; CREEP; DYNAMIC LOADS; ELASTICITY; ELONGATION; FLEXURAL STRENGTH; PLATES; RATCHETING; RUPTURES; STAINLESS STEELS; STATIC LOADS; STRESS ANALYSIS; TEMPERATURE RANGE 0400-1000 K; TORSION; TUBES
Descriptors DEC
ALLOYS; CARBON ADDITIONS; DEFORMATION; FAILURES; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; STEELS; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
13 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses