Počet záznamů: 1
High Temperature Creep Behaviour of Cast Nickel-Based Superalloys INC 713 LC, B1914 and MAR-M247
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SYSNO ASEP 0548001 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název High Temperature Creep Behaviour of Cast Nickel-Based Superalloys INC 713 LC, B1914 and MAR-M247 Tvůrce(i) Kvapilová, Marie (UFM-A) RID, ORCID
Král, Petr (UFM-A) RID, ORCID
Dvořák, Jiří (UFM-A) RID, ORCID
Sklenička, Václav (UFM-A) RID, ORCIDCelkový počet autorů 4 Číslo článku 152 Zdroj.dok. Metals. - : MDPI
ROČ. 11, č. 1 (2021)Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova creep ; nickel-based superalloy ; fracture Vědní obor RIV JG - Hutnictví, kovové materiály Obor OECD Materials engineering Způsob publikování Open access Institucionální podpora UFM-A - RVO:68081723 UT WOS 000610504400001 EID SCOPUS 85100066359 DOI 10.3390/met11010152 Anotace Cast nickel-based superalloys INC713 LC, B1914 and MAR-M247 are widely used for high temperature components in the aerospace, automotive and power industries due to their good castability, high level of strength properties at high temperature and hot corrosion resistance. The present study is focused on the mutual comparison of the creep properties of the above-mentioned superalloys, their creep and fracture behaviour and the identification of creep deformation mechanism(s). Standard constant load uniaxial creep tests were carried out up to the rupture at applied stress ranging from 150 to 700 MPa and temperatures of 800–1000 °C. The experimentally determined values of the stress exponent of the minimum creep rate, n, were rationalized by considering the existence of the threshold stress, σ0. The corrected values of the stress exponent correspond to the power-law creep regime and suggest dislocation climb and glide as dominating creep deformation mechanisms. Fractographic observations clearly indicate that the creep fracture is a brittle mostly mixed transgranular and intergranular mode, resulting in relatively low values of fracture strain. Determined main creep parameters show that the superalloy MAR-M247 exhibits the best creep properties, followed by B1914 and then the superalloy INC713 LC. However, that each of the investigated superalloys can be successfully used for high temperature components fulfils the required service loading conditions. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2022 Elektronická adresa https://www.mdpi.com/2075-4701/11/1/152
Počet záznamů: 1