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Deformation Modes of the Intermediate Phase NiAl
Author(s) -
Pascoe R. T.,
Newey C. W. A.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680290136
Subject(s) - slip (aerodynamics) , nial , materials science , crystallite , atmospheric temperature range , slip line field , deformation (meteorology) , crystallography , condensed matter physics , composite material , geometry , metallurgy , thermodynamics , intermetallic , chemistry , physics , mathematics , alloy
The deformation modes of single crystal NiAl deformed in compression in the range 77 to 1000 °K were found to be dependent on orientation and temperature. The preferred slip direction was confirmed as 〈001〉, but this may be constrained geometrically to allow kinking, or slip in 〈111〉 or 〈011〉 directions, depending on temperature. When 〈001〉 slip occurred, the slip plane was invariably {110} at 77 °K but was dependent on orientation at higher temperatures. The slip planes were also sensitive to temperature when slip occurred in other directions. The von Mises criterion for polycrystalline ductility can be satisfied by combinations of the observed slip systems.