Počet záznamů: 1
In-situ Study of the Mechanisms of High Temperature Damage
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SYSNO ASEP 0435392 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název In-situ Study of the Mechanisms of High Temperature Damage Tvůrce(i) Petrenec, M. (CZ)
Polák, Jaroslav (UFM-A) RID, ORCID
Šamořil, T. (CZ)
Dluhoš, J. (CZ)
Obrtlík, Karel (UFM-A) RID, ORCIDCelkový počet autorů 5 Zdroj.dok. 11th International Fatigue Congress. - Zurich : Trans Tech Publications, 2014 / Clark G. ; Wang Ch. - ISSN 1022-6680 - ISBN 978-3-03835-008-8 Rozsah stran s. 891-892 Poč.str. 6 s. Forma vydání Tištěná - P Akce Fatigue 2014 - International Fatigue Congress /11./ Datum konání 02.03.2014-07.03.2014 Místo konání Melbourne Země AU - Austrálie Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova fatigue damage ; high temperature ; nickel superalloy ; TEM lamella Vědní obor RIV JL - Únava materiálu a lomová mechanika CEP GA13-23652S GA ČR - Grantová agentura ČR Institucionální podpora UFM-A - RVO:68081723 UT WOS 000337767700083 EID SCOPUS 84898881690 DOI 10.4028/www.scientific.net/AMR.891-892.530 Anotace In-situ Low Cycle Fatigue test (LCF) at temperature 635 °C have been performed in SEM on flat specimen of cast Inconel 713LC superalloy. The aim of the investigation was to study mechanisms of the fatigue damage during elastic-plastic cycling by the observations of the characteristic surface relief evolution and the accompanying internal dislocation structures. The selected locations on the surface were systematically studied in-situ and documented by SEM and using AFM. The surface relief in the first tensile half-cycle was formed by numerous slip steps on the primary slip planes (111). In the following compression half-cycle additional opposite slip were formed. The relief was modified in the next cycles but without forming additionally new slip traces in the primary system. The reorientation of two grains in the gauge area was measured using EBSD. At the end of cyclic loading the relation between surface persistent slip markings and persistent slip bands in the interior of the material was documented by TEM on lamella prepared by FIB. The early stages of extrusion and intrusion formation were documented. The damage mechanism evolution is closely connected with the cyclic strain localization to the persistent slip bands that are also places of fatigue crack initiation. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2015
Počet záznamů: 1