Creep Processes in MAR-M247 Nickel-Base Superalloy

Creep processes in MAR-M247 Nickel - Base Superalloy were studied at elevated temperatures. The stress exponents of creep rate n and time to fracture m indicate power-low (dislocation) creep regime and suggest the same controlling mechanism for the creep deformation and fracture. The variation of va...

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Bibliographic Details
Published inSolid State Phenomena Vol. 258; pp. 603 - 606
Main Authors Sklenička, Václav, Kvapilová, Marie, Hrbáček, Karel, Kuchařová, Květa
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 08.12.2016
Subjects
Creep life
Creep rate
Creep strength
Deformation mechanisms
High temperature
Life prediction
Nickel
Nickel base alloys
Superalloys
Creep
Deformation Mechanisms
MAR-M247 Superalloy
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Summary:Creep processes in MAR-M247 Nickel - Base Superalloy were studied at elevated temperatures. The stress exponents of creep rate n and time to fracture m indicate power-low (dislocation) creep regime and suggest the same controlling mechanism for the creep deformation and fracture. The variation of values of parameter n within the interval of applied stress may indicate changes in the rate-controlling creep deformation mechanism. The possibility of using of Monkman-Grant relationship for creep life prediction was demonstrated.
Bibliography:Selected, peer reviewed papers from the 8th International Conference “Materials Structure & Micromechanics of Fracture (MSMF8)”, June 27-29, 2016, Brno, Czech Republic
ISBN:9783038356264
3038356263
ISSN:1012-0394
1662-9779
1662-9779
DOI:10.4028/www.scientific.net/SSP.258.603