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Effect of orientation on the microstructure of nickel‐based crystalline superalloys
Author(s) -
Zhao X. B.,
Liu L.,
Gao S. F.,
Ge B. M.,
Zhang J.,
Li Y. L.,
Fu H. Z.
Publication year - 2011
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201100391
Subject(s) - misorientation , superalloy , microstructure , materials science , dendrite (mathematics) , nickel , phase (matter) , crystallography , crystal (programming language) , seeding , orientation (vector space) , metallurgy , directional solidification , seed crystal , composite material , single crystal , geometry , chemistry , thermodynamics , mathematics , organic chemistry , physics , computer science , grain boundary , programming language
The effect of crystal orientation on the microstructure of a nickel‐based crystalline superalloys during directional solidification was explored. Differently oriented crystals with [001] and [011] orientations were fabricated with seeding technique. The results showed that primary dendrite arm spacings decreased simultaneously with the increase of misroientation. The primary dendrites arrange in lines in [011] single crystal. For [001] oriented crystals, the size of γ′ phase increased with the increasing of misorientation. However, it was observed that the size of γ′ decreased with large misorientation for [011] orientated growth. Meanwhile, more γ′ in [011] crystals tended to be triangular. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)