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SANS Investigation of Y ' Precipitate Morphology Evolution in Creep Exposed Single Crystal Ni base Superalloy
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SYSNO ASEP 0347276 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title SANS Investigation of Y ' Precipitate Morphology Evolution in Creep Exposed Single Crystal Ni base Superalloy Author(s) Zrnik, J. (CZ)
Strunz, Pavel (UJF-V) RID, ORCID, SAI
Maldini, M. (IT)
Davydov, Vadim (UJF-V)Source Title ADVANCED MATERIALS FORUM V, PT 1 AND 2. - CH-8717 STAFA-ZURICH : TRANS TECH PUBLICATIONS LTD, LAUBLSRUTISTR 24, 2010 / Rosa L.G. ; Margarido F. - ISSN 0255-5476 Pages s. 1475-1482 Number of pages 12 s. Action 5th International Materials Symposium/14th Conference of the Sociedade-Portuguesa-de-Materiais Event date 05.04.2009-08.04.2009 VEvent location Lisbon Country PT - Portugal Event type WRD Language eng - English Country CH - Switzerland Keywords Nickel base superalloys ; Single crystal ; Creep Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000280763200221 Annotation The creep degraded nickel base single crystal superalloy CMSX-4 of two axial orientations [001] and [111] was investigated with aim to assess the structure degradation. Constant load creep tests were conducted in the stress/temperature ranges of 250-780 MPa/750 - 50 degrees C resulting in rupture time variation from 50 to 4000 hours. A combination of scanning electron microscopy (SEM) and non-destructive small-angle neutron scattering method (SANS) was used to. investigate the directional coarsening (rafting) of the gamma prime (gamma') precipitates in relation to the stress and temperature applied as well as to the initial crystallographic orientation of the specimens. The SANS results are discussed in terms of the correlation with the raft development, the axial orientation of specimen, the creep parameters and the mechanical properties. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2011
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