Journal
SCRIPTA MATERIALIA
Volume 51, Issue 8, Pages 789-794Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2004.05.008
Keywords
nanocrystalline materials; high-pressure torsion; high-resolution electron microscopy; order-disorder; amorphization
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After severe plastic deformation by high-pressure torsion, the density of grain boundaries is so high that in HRTEM images frequently moire patterns occur open to misinterpretation. The observed dislocation densities are far too low to cause homogeneous destruction of long-range order and homogeneous amorphization in Ni3Al and NiTi, respectively. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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