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The Three‐ D imensional Morphology of Topologically Close Packed Phases in a High Rhenium Containing Nickel Based Superalloy
Author(s) -
Matuszewski Kamil,
Rettig Ralf,
Rasiński Marcin,
Kurzydłowski Krzysztof J.,
Singer Robert F.
Publication year - 2014
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201300198
Subject(s) - superalloy , rhenium , materials science , morphology (biology) , nickel , phase (matter) , cross section (physics) , crystallography , microstructure , chemical engineering , nanotechnology , composite material , metallurgy , geology , chemistry , physics , organic chemistry , quantum mechanics , engineering , paleontology
The three‐dimensional morphology of topologically close packed phases (TCP) in an experimental 6 wt% rhenium‐containing superalloy is examined with focused ion beam tomography and compared to the existing knowledge gained with classical microscopy of two‐dimensional cross‐sections. The results show completely new insights compared to investigation of cross‐sections. With the new technique, three different types of TCP‐phase morphologies and the orientation of their growth planes could be identified: complex shaped plates, needles, and laths. In the classical cross‐section, they all appear to be needles. A part of the needles is penetrating the plate‐like precipitates. Possible conclusions on the growth mechanism are discussed.