Publication detail
Analysis of cyclic plastic response of heat resistant sanicro 25 steel at ambient and elevated temperatures
POLÁK, J. PETRÁŠ, R. HECZKO, M. KRUML, T. CHAI, G.
Czech title
Analýza cyklické plastické odezvy tepelně odolné oceli Sanicro 25 za pokojové a zvýšených teplot
English title
Analysis of cyclic plastic response of heat resistant sanicro 25 steel at ambient and elevated temperatures
Type
journal article in Web of Science
Language
en
Original abstract
Austenitic heat resistant steel Sanicro 25 developed for high temperature applications in power generation industry has been subjected to selected low cycle fatigue tests at ambient and at elevated temperature. Saturated hysteresis loops at both temperatures were analyzed to deduce the probability density distribution of the internal critical stresses and to estimate the contribution of the effective stress for different strain amplitudes. The internal structure of the material at room and elevated temperature was studied using transmission electron microscopy and the results were discussed in relation to the cyclic stressstrain response.
Czech abstract
Austenitická tepelně odolná ocel Sanicro 25, která je vyvíjená pro použití ve vysokoteplotních aplikacích v energetickém průmyslu byla podrobena vybraným experimentům nízkocyklové únavy za pokojové a zvýšené teploty. Saturované hysterézní smyčky byly analyzovány za účelem určení rozdělení hustoty pravděpodobnosti vnitřních kritických napětí a určení příspěvku efektivního napětí. Testy byly provedeny pro různé amplitudy deformace. Vnitřní struktura materiálu za pokojové a zvýšené teploty byla studována pomocí transmisní elektronové mikroskopie a výsledky byly diskutovány ve vztahu k deformačně-napěťové odezvě.
English abstract
Austenitic heat resistant steel Sanicro 25 developed for high temperature applications in power generation industry has been subjected to selected low cycle fatigue tests at ambient and at elevated temperature. Saturated hysteresis loops at both temperatures were analyzed to deduce the probability density distribution of the internal critical stresses and to estimate the contribution of the effective stress for different strain amplitudes. The internal structure of the material at room and elevated temperature was studied using transmission electron microscopy and the results were discussed in relation to the cyclic stressstrain response.
Keywords in Czech
tepelně odolná ocel, Sanicro 25, cyklická plasticita, dislokační struktura, teplotní efekt
Keywords in English
heat resistant steel, Sanicro 25, cyclic plasticity, dislocation structure, effect of temperature
RIV year
2014
Released
25.06.2014
Publisher
Elsevier
ISSN
1877-7058
Volume
74
Number
1
Pages from–to
68–73
Pages count
6
BIBTEX
@article{BUT108929,
author="Jaroslav {Polák} and Roman {Petráš} and Milan {Heczko} and Tomáš {Kruml} and Guocai {Chai},
title="Analysis of cyclic plastic response of heat resistant sanicro 25 steel at ambient and elevated temperatures",
year="2014",
volume="74",
number="1",
month="June",
pages="68--73",
publisher="Elsevier",
issn="1877-7058"
}