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Dislocation Structures in Nickel Based Superalloy Inconel 792-5A Fatigued at Room Temperature and 700 °C
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SYSNO ASEP 0093335 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Dislocation Structures in Nickel Based Superalloy Inconel 792-5A Fatigued at Room Temperature and 700 °C Title Dislokační struktury v niklové superslitině Inconel 792-5A únavově zatěžované při pokojové teplotě a 700 °C Author(s) Petrenec, Martin (UFM-A)
Obrtlík, Karel (UFM-A) RID, ORCID
Polák, Jaroslav (UFM-A) RID, ORCID
Man, Jiří (UFM-A) RID, ORCIDSource Title 5th International Conference on Materials Structure and Micromechanics of Fracture. Abstract booklet. - Brno : VUTIUM, 2007 / Šandera P. - ISBN 978-80-214-3434-9
S. 121-121Number of pages 1 s. Action MSMF /5./ Event date 27.06.2007-29.06.2007 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords dislocation structure ; superalloy ; Low cycle fatigue Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GP106/05/P521 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation Dislocations structures were studied using transmission electron microscopy in specimens of cast polycrystalline nickel based superalloy Inconel 792-5A cyclically strained up to failure with constant total strain amplitudes at temperatures 23 and 700 °C. Spatial arrangement of dislocations in individual grains was determined using the technique of oriented foils. Planar dislocation arrangements in the form of bands parallel to the {111} planes were observed in specimens cycled at both temperatures. The bands showed up as thin slabs of high dislocation density cutting both the channels and precipitates. They correspond to areas of cyclic slip localization. Experimental results concerning the dislocation structure are used to discuss the effect of temperature on the cyclic stress-strain response and fatigue life. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2008
Number of the records: 1