Analysis of the Effective and Internal Cyclic Stress Components in the Superalloys Fatigued at Elevated Temperature

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F11%3APU92943" target="_blank" >RIV/00216305:26210/11:PU92943 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Analysis of the Effective and Internal Cyclic Stress Components in the Superalloys Fatigued at Elevated Temperature

Original language description

Cyclic multiple step test in strain control have been performed on cylindrical specimens of cast polycrystalline Inconel 738LC and 792-5A superalloys at 800 C in laboratory atmosphere. Hysteresis loops were analyzed according to the statistical theory ofhysteresis loop. The effective and internal stress components were evaluated. The effective stress of gamma prime precipitate has significant influence on the stress-strain response both materials. The stress amplitude in IN 792-5A is higher than in IN738LC at approximately same total strain amplitude due to significantly higher effective stress of gamma prime phase. Cyclic hardening/softening curves and cyclic stress-strain curves using short-cut procedure were obtained. Cyclic hardening/softening behavior depends both on temperature and strain amplitude. Low amplitude straining is characterized by the saturation of the stress amplitude. In high amplitude straining slight softening was found. The cyclic stress-strain curves for both

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2011

Confidentiality

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

Name of the periodical

Advanced Materials Research

ISSN

1022-6680

e-ISSN

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Volume of the periodical

278

Issue of the periodical within the volume

7

Country of publishing house

CH - SWITZERLAND

Number of pages

6

Pages from-to

393-398

UT code for WoS article

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EID of the result in the Scopus database

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