HRTEM analysis of nanostructured alloys processed by severe plastic deformation

2019-08-14 07:12:23

deformation plastic Vienna HRTEM Materialia

责任者: Rentenberger, C.;Waitz, T.;Karnthaler, H.P. 单位: Institute of Materials Physics, University of Vienna, AT1090 Vienna, Austria 来源出处: Scripta Materialia,2004,51(8 SPEC ISS):789-794 摘要: 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. © 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. 关键词: Nanostructured materials;Plastic deformation;Amorphization;Dislocations (crystals);Electrolytic polishing;Grain boundaries;Annealing;Martensite;Transmission electron microscopy;Computer simulation;High-pressure torsion;High-resolution electron microscopy;Order-disorder;Severe plastic deformation (SPD)