Relation between the microstructure and microchemistry in Ni-based superalloy (Articolo in rivista)

Type
Label
  • Relation between the microstructure and microchemistry in Ni-based superalloy (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/sia.4844 (literal)
Alternative label
  • Kaciulis S.; Mezzi A.; Amati M.; Montanari R.; Angella G.; Maldini M. (2012)
    Relation between the microstructure and microchemistry in Ni-based superalloy
    in SIA. Surface and interface analysis
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Kaciulis S.; Mezzi A.; Amati M.; Montanari R.; Angella G.; Maldini M. (literal)
Pagina inizio
  • 982 (literal)
Pagina fine
  • 985 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://onlinelibrary.wiley.com/doi/10.1002/sia.4844/abstract;jsessionid=020784E3A93676BDFBA8263B333E633F.f03t04 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 44 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1,2 : ISMN - CNR, P.O. Box 10, 00015 Montelibretti, Roma, Italy / 3 : Sincrotrone Trieste, Area Science Park, 34012 Trieste, Italy / 4 : Dept. of Mechanical Engineering, University of Rome Tor Vergata, 00133 Roma, Italy / 5,6 : IENI - CNR, 20125 Milano, Italy (literal)
Titolo
  • Relation between the microstructure and microchemistry in Ni-based superalloy (literal)
Abstract
  • Ni-based superalloys with biphasic structure (? + ?') are widely used for high-temperature applications, such as disks and blades of gas turbines and aeronautical engines. For these applications, the stability at high temperature is of utmost importance, in particular the coarsening and the morphological changes of ?' may be seriously detrimental for in-service components. Evolution of ?' particles strongly depends on the composition difference between disordered matrix and particles. The present work is devoted to the investigation of the ?' morphology and the microchemistry in single crystal CM186LC superalloy in as-received condition and after creep. The study was carried out by scanning electron microscopy and atomic force microscopy, standard X-ray photoelectron spectroscopy and scanning photoemission microscopy (SPEM) at the ELETTRA synchrotron facility in Trieste. The difference in the chemical composition of two phases, ? and ?', was revealed from the SPEM images and their spectral analysis. The structural evolution, taking place during creep and leading to rafting, seems to be determined not only by the external applied stress but also by W diffusion from ? to ?' phase. (literal)
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