Fatigue crack initiation and growth in 316L steel in torsional cyclic loading

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Fatigue crack initiation and growth in 316L steel in torsional cyclic loading

Popis výsledku v původním jazyce

Fatigue crack initiation and growth study in 316L austenitic stainless steel was made in cyclicntorsion. The experiments on hollow cylindrical specimens were performed at room temperature using fully reversed shear strain controlled cycles. The specimens used were polished mechanically and electrolytically to enable surface damage and crack propagation observation using optical light microscope, SEM. It was found that high density of extrusions and intrusions are formed on the specimen surface due to cyclic loading. TEM observations revealed that dislocation arrangement in well-known ladder-like structure is responsible for the localization of cyclic plastic deformation and for the origin of surface roughness in which the fatigue crack nucleate. The path of fatigue cracks leading to failure was observed, too. The crack pathnwas found to be dependent upon the applied shear strain amplitude.

Název v anglickém jazyce

Fatigue crack initiation and growth in 316L steel in torsional cyclic loading

Popis výsledku anglicky

Fatigue crack initiation and growth study in 316L austenitic stainless steel was made in cyclicntorsion. The experiments on hollow cylindrical specimens were performed at room temperature using fully reversed shear strain controlled cycles. The specimens used were polished mechanically and electrolytically to enable surface damage and crack propagation observation using optical light microscope, SEM. It was found that high density of extrusions and intrusions are formed on the specimen surface due to cyclic loading. TEM observations revealed that dislocation arrangement in well-known ladder-like structure is responsible for the localization of cyclic plastic deformation and for the origin of surface roughness in which the fatigue crack nucleate. The path of fatigue cracks leading to failure was observed, too. The crack pathnwas found to be dependent upon the applied shear strain amplitude.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Engineering Mechanics 2017 : 23rd international conference : May 15-18, 2017, Svratka, Czech Republic : book of full texts

ISBN

978-80-214-5497-2

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

434-437

Název nakladatele

University of Technology, Institute of Solid Mechanics, Mechatronics and Biomechanics

Místo vydání

Brno

Místo konání akce

Svratka

Datum konání akce

15. 5. 2017

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000411657600098