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Microstructure of creep-exposed single crystal nickel base superalloy CSMX4
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SYSNO ASEP 0358067 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Microstructure of creep-exposed single crystal nickel base superalloy CSMX4 Author(s) Strunz, Pavel (UJF-V) RID, ORCID, SAI
Zrnik, J. (CZ)
Epishin, A. (DE)
Link, T. (DE)
Balog, S. (CH)Source Title Journal of Physics: Conference Series. - : Institute of Physics Publishing - ISSN 1742-6588 Pages roč. 247, - (2010), 012039/1-012039/7 Number of pages 7 s. Action XIV International Conference on Small-Angle Scattering Event date 13.09.2009-18.09.2009 VEvent location Oxford Country GB - United Kingdom Event type WRD Language eng - English Country GB - United Kingdom Keywords CSMX4 Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000292653200039 EID SCOPUS 78651076143 DOI 10.1088/1742-6596/247/1/012039 Annotation Main changes which appear in microstructure of Ni base superalloys during creep exposure is the directional coarsening (rafting) of originally cubic γ' precipitates embedded in γ matrix. The progress in γ' degradation can be assessed with help of the analysis of geometrical parameters of the γ' microstructure. Determination of the morphological changes of γ' in creep-exposed single-crystal Ni-base superalloy CMSX4 using SANS was carried out. A new sample design (conic specimen) was tested in order to get continually changing stress levels in one sample and corresponding variety of micro structural change. Evolution of rafts with stress magnitude is clearly observable from the parameters obtained using SANS (the mean thickness of the γ channel in different crystallographic directions of the single-crystal, the evolution of the γ' precipitate size and distance, the evolution of the specific interface). Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2011
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