Analysis of cyclic plastic response of nickel based IN738LC superalloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00432561" target="_blank" >RIV/68081723:_____/14:00432561 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ijfatigue.2013.09.008" target="_blank" >http://dx.doi.org/10.1016/j.ijfatigue.2013.09.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijfatigue.2013.09.008" target="_blank" >10.1016/j.ijfatigue.2013.09.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Analysis of cyclic plastic response of nickel based IN738LC superalloy

Popis výsledku v původním jazyce

Cyclic strain controlled tests with blocks of stepwise increasing strain amplitudes were applied to cylindrical specimens of cast Inconel 738LC superalloy at 23 and 800 °C in laboratory atmosphere. Cyclic hardening/softening curves and shortened cyclic stress-strain curves were obtained at both temperatures. The hysteresis loops were analyzed using generalized statistical theory of the hysteresis loop. The second derivative of the half-loop exhibits three domains. The initial drop represents the plasticstrain relaxation under decreasing effective stress and two peaks correspond to the probability density distribution of the internal critical stresses in matrix (gama phase) and gama? phase respectively. Localized cyclic straining was identified using dislocation structure of PSBs and surface relief corresponding to PSMs. Weibull probability density function was fitted to individual peaks and effective stress component and probability density distributions of the internal critical stres

Název v anglickém jazyce

Analysis of cyclic plastic response of nickel based IN738LC superalloy

Popis výsledku anglicky

Cyclic strain controlled tests with blocks of stepwise increasing strain amplitudes were applied to cylindrical specimens of cast Inconel 738LC superalloy at 23 and 800 °C in laboratory atmosphere. Cyclic hardening/softening curves and shortened cyclic stress-strain curves were obtained at both temperatures. The hysteresis loops were analyzed using generalized statistical theory of the hysteresis loop. The second derivative of the half-loop exhibits three domains. The initial drop represents the plasticstrain relaxation under decreasing effective stress and two peaks correspond to the probability density distribution of the internal critical stresses in matrix (gama phase) and gama? phase respectively. Localized cyclic straining was identified using dislocation structure of PSBs and surface relief corresponding to PSMs. Weibull probability density function was fitted to individual peaks and effective stress component and probability density distributions of the internal critical stres

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/GAP204%2F11%2F1453" target="_blank" >GAP204/11/1453: Analýza složek cyklického napětí moderních vysokoteplotně odolných konstrukčních materiálů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

International Journal of Fatigue

ISSN

0142-1123

e-ISSN

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Svazek periodika

65

Číslo periodika v rámci svazku

AUG

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

44-50

Kód UT WoS článku

000337554000007

EID výsledku v databázi Scopus

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