AFM study of slip localization and surface relief evolution in fatigued ferritic X10CrAl24 stainless steel.

Kód výsledku v IS VaVaI

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RIV/68081731:_____/03:07033075

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

AFM study of slip localization and surface relief evolution in fatigued ferritic X10CrAl24 stainless steel.

Popis výsledku v původním jazyce

Atomic force microscopy (AFM) was applied to study the surface relief evolution at the emerging persistent slip bands (PSBs) in individual grains of polycrystalline ferritic stainless steel cycled with constant plastic strain amplitude. The early appearance of the first persistent slip markings (PSMs) correlates with the cyclic hardening/softening curve and with the characteristic variations in the loop shape parameter. Surface relief of the well-developed individual PSMs consists of extrusions with fine irregular structure, but also of intrusions laying both parallel to the extrusions and within the PSMs. The extrusion height can be assessed by a direct observation of the metal surface and the intrusion depth using the plastic replica technique. The extrusions grow continuously during the fatigue life. The initial rate is high and decreases to a lower value that is constant up to the end of the fatigue life. The experimental results are discussed in terms of vacancy models of surface

Název v anglickém jazyce

AFM study of slip localization and surface relief evolution in fatigued ferritic X10CrAl24 stainless steel.

Popis výsledku anglicky

Atomic force microscopy (AFM) was applied to study the surface relief evolution at the emerging persistent slip bands (PSBs) in individual grains of polycrystalline ferritic stainless steel cycled with constant plastic strain amplitude. The early appearance of the first persistent slip markings (PSMs) correlates with the cyclic hardening/softening curve and with the characteristic variations in the loop shape parameter. Surface relief of the well-developed individual PSMs consists of extrusions with fine irregular structure, but also of intrusions laying both parallel to the extrusions and within the PSMs. The extrusion height can be assessed by a direct observation of the metal surface and the intrusion depth using the plastic replica technique. The extrusions grow continuously during the fatigue life. The initial rate is high and decreases to a lower value that is constant up to the end of the fatigue life. The experimental results are discussed in terms of vacancy models of surface

Druh

D - Stať ve sborníku

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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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)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název statě ve sborníku

Fatigue Damage of Materials - Experiment and Analysis.

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

11

Strana od-do

193-203

Název nakladatele

WIT Press

Místo vydání

Southampton

Místo konání akce

Toronto [CA]

Datum konání akce

14. 7. 2003

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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