Publication detail
EFFECT OF HIP ON LOW CYCLE FATIGUE OF MAR-M-247 AT 900°C
ŠULÁK, I. OBRTLÍK, K. ŠKORÍK, V. HRBÁČEK, K.
Czech title
Efekt isostatického lisování za tepla na nízkocyklovou únavu slitiny MAM-M-247 za teploty 900°C
English title
EFFECT OF HIP ON LOW CYCLE FATIGUE OF MAR-M-247 AT 900°C
Type
conference paper
Language
en
Original abstract
Polycrystalline nickel-base superalloy MAR-M-247 is used for high temperature applications requiring excellent combination of fatigue properties, creep resistance and surface stability. In the present work, the high temperature low cycle fatigue behaviour of cast nickel-base superalloy MAR-M-247 in as received condition and in hot isostatically pressed (HIP) condition was studied. The microstructure of the materials is characterized by dendritic grains, carbides and casting defects. Distribution and size of defects in both materials were studied. Beneficial effects of HIP process on cyclic stress-strain and fatigue life curves are discussed.
Czech abstract
Polykrystalické niklová superslitina MAR-M-247 je používána na vysokoteplotní aplikace, které vyžadují vynikající kombinaci únavových vlastností, odolnost proti tečení a povrchovou stálost. V této práci, je studována vysokoteplotní nízkocyklová únava materiálu ve stavu po odlití MAR-M-247 a ve stavu po isostatickém lisování. Mikrostruktura materiálu se vyznačuje hrubou dendritickou strukturou s množstvím karbidů a licích vad. Distribuce a velikost vad v obou materiálech byly studovány. Příznívé účinky HIP procesu na napěťově deformační odezvu a únavovou životnost jsou diskutovány.
English abstract
Polycrystalline nickel-base superalloy MAR-M-247 is used for high temperature applications requiring excellent combination of fatigue properties, creep resistance and surface stability. In the present work, the high temperature low cycle fatigue behaviour of cast nickel-base superalloy MAR-M-247 in as received condition and in hot isostatically pressed (HIP) condition was studied. The microstructure of the materials is characterized by dendritic grains, carbides and casting defects. Distribution and size of defects in both materials were studied. Beneficial effects of HIP process on cyclic stress-strain and fatigue life curves are discussed.
Keywords in English
MAR-M247, High Temperature, Low Cycle Fatigue.
RIV year
2014
Released
21.05.2014
Publisher
Tanger Ltd
Location
Ostrava
ISBN
978-80-87294-54-3
Book
Metal 2014
Edition number
1
Pages from–to
1381–1386
Pages count
6
BIBTEX
@inproceedings{BUT108535,
author="Ivo {Šulák} and Karel {Obrtlík} and Viktor {Škorík} and Karel {Hrbáček},
title="EFFECT OF HIP ON LOW CYCLE FATIGUE OF MAR-M-247 AT 900°C",
booktitle="Metal 2014",
year="2014",
month="May",
pages="1381--1386",
publisher="Tanger Ltd",
address="Ostrava",
isbn="978-80-87294-54-3"
}