Publication detail
INFLUENCE OF THE CREEP ON THE STRUCTURE AND PROPERTIES OF THE CAST Ni-SUPERALLOY
PANTĚLEJEV, L. PODRÁBSKÝ, T. HRBÁČEK, K. HAKL, J. PETRENEC, M. NĚMEC, K.
Czech title
Vliv creepového zatěžování na strukturu a vlastnosti lité niklové superslitiny
English title
INFLUENCE OF THE CREEP ON THE STRUCTURE AND PROPERTIES OF THE CAST Ni-SUPERALLOY
Type
journal article - other
Language
en
Original abstract
During operational conditions of internal combustion turbines of turbojet engines, the impeller blades are stressed by load cycles which vary in time, temperature and stress. In the course of operation, the blades are exposed to a considerable number of degradation effects, particularly high-temperature corrosion, fatigue processes and creep. Operational conditions of heat parts, used in gas turbines and turbo-compressors, were simulated by creep tests of Inconel 713 LC nickel superalloy during a constant load of temperatures ranging from 750 up to 950C. Changes in the structure dependent upon time, temperature and stress applied were analysed by means of light and electron microscopy methods after the fracture of test bars.
Czech abstract
V provozních podmínkách spalovacích turbín proudových motorů jsou lopatky oběžných kol namáhány časově, teplotně a napěťově proměnnými cykly zatěžování. Během provozu jsou lopatky vystaveny řadě degradačních vlivů, zejména vysokoteplotní korozi, úna-vovým procesům a creepu. Creepovými zkouškami niklové superslitiny Inconel 713 LC při konstantním zatížení v rozsahu teplot 750 až 950C byly modelovány provozní podmínky žárových částí, používaných v plynových turbinách a turbokompresorech. Po lomu zkušebních tyčí byly metodami světelné a elektronové mikroskopie analyzovány změny ve struktuře v závislosti na době, teplotě a aplikovaném napětí.
English abstract
During operational conditions of internal combustion turbines of turbojet engines, the impeller blades are stressed by load cycles which vary in time, temperature and stress. In the course of operation, the blades are exposed to a considerable number of degradation effects, particularly high-temperature corrosion, fatigue processes and creep. Operational conditions of heat parts, used in gas turbines and turbo-compressors, were simulated by creep tests of Inconel 713 LC nickel superalloy during a constant load of temperatures ranging from 750 up to 950C. Changes in the structure dependent upon time, temperature and stress applied were analysed by means of light and electron microscopy methods after the fracture of test bars.
Keywords in Czech
Ni – superslitina, creep, mikrostruktura
Keywords in English
creep, Ni superalloy, microstructure
Released
28.04.2004
Publisher
Technical University of Košice
Location
Stará Lesná, Slovensko
ISSN
1335-1532
Journal
Acta Metallurgica Slovaca
Volume
10
Number
1
Pages count
5
BIBTEX
@article{BUT46414,
author="Libor {Pantělejev} and Tomáš {Podrábský} and Karel {Hrbáček} and Jan {Hakl} and Martin {Petrenec} and Karel {Němec},
title="INFLUENCE OF THE CREEP ON THE STRUCTURE AND PROPERTIES OF THE CAST Ni-SUPERALLOY",
journal="Acta Metallurgica Slovaca",
year="2004",
volume="10",
number="1",
month="April",
publisher="Technical University of Košice",
address="Stará Lesná, Slovensko",
issn="1335-1532"
}