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Creep behaviour and microstructure changes of model cast Ni-Cr-W-C alloys
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SYSNO ASEP 0367575 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Creep behaviour and microstructure changes of model cast Ni-Cr-W-C alloys Tvůrce(i) Kvapilová, Marie (UFM-A) RID, ORCID
Kuchařová, Květa (UFM-A) RID, ORCID
Sklenička, Václav (UFM-A) RID, ORCID
Svoboda, Milan (UFM-A) RID, ORCID
Hrbáček, K. (CZ)Zdroj.dok. Procedia Engineering. - Amsterdam : Elsevier BV
Roč. 10, - (2011), s. 839-844Poč.str. 6 s. Akce ICM11 -International Conference on The Mechanical Behavior of Materials /11./ Datum konání 05.06.2011-09.06.2011 Místo konání Lake Como Země IT - Itálie Typ akce WRD Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova cast Ni based superalloy ; creep properties ; phase stability Vědní obor RIV JG - Hutnictví, kovové materiály CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000300451300134 Anotace A comparative study of creep and microstructural properties of two model cast Ni-Cr-W-C alloys (Alloys A and B) resistant to high-temperature oxidation with different contents of Cr, W, Zr and Fe was performed. Uniaxial tensile creep tests were carried out at temperatures from 1023 to 1273 K and at the applied stresses ranged from 20 to 250 MPa. Creep tests were followed by microstructural and fractographic investigations. A mutual comparison between the creep characteristics of the alloys under comparable creep loading conditions shows that the alloy B with higher contents of tungsten and zirconium is more creep resistant as that of the Alloy A at lower temperatures. It is suggested that the alloy A and B earn their creep strength from the combination of solid solution hardening and precipitation hardening. However, it is difficult to quantify each contribution to the overall creep strength. Possible reason for the different consequence of strengthening effects is discussed. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2012
Počet záznamů: 1