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Electron Transmission Microscopy of NiAl
Author(s) -
Lautenschlager E. P.,
Tisone T. C.,
Brittain J. O.
Publication year - 1967
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.19670200205
Subject(s) - nial , transmission electron microscopy , materials science , dislocation , condensed matter physics , twist , hexagonal crystal system , crystallography , slip (aerodynamics) , geometry , intermetallic , metallurgy , composite material , physics , nanotechnology , chemistry , alloy , thermodynamics , mathematics
An electron transmission study of the β‐phase of NiAl was made in annealed and deformed samples with the purpose of looking for antiphase boundary (APB), networks, and super‐dislocations and to observe other configurations of the deformed state. No “grown in” APB networks, superdislocations, or APB trails were observed in annealed or deformed samples. It was concluded that in β‐NiAl APB do not exist and the material deforms on slip systems which do not require the motion of superdislocations. Deformation appears intimately related to tangles of single dislocations, subgrains, tilt and twist subboundaries, distorted hexagonal networks, and dislocation loops.