Creep processes in MAR – M247 Nickel – Base Superalloy

0468267 - ÚFM 2018 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Kvapilová, Marie - Kuchařová, Květa - Hrbáček, K. - Sklenička, Václav
Creep processes in MAR – M247 Nickel – Base Superalloy.
Materials Structure & Micromechanics of Fracture VIII. Zürrich: Trans Tech Publications, 2017 - (Šandera, P.), s. 603-606. Solid State Phenomena, 258. ISBN 978-3-03835-626-4. ISSN 1662-9779.
[MSMF8. International Conference on Materials Structure and Micromechanics of Fracture /8./. Brno (CZ), 27.06.2016-29.06.2016]
Grant CEP: GA TA ČR(CZ) TA04011525; GA MŠMT(CZ) LQ1601
Institucionální podpora: RVO:68081723
Klíčová slova: Creep * MAR-M247 superalloy * deformation mechanisms
Obor OECD: Materials engineering

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.
Trvalý link: http://hdl.handle.net/11104/0271182