Premium
Orientation changes during recovery of compressed Mo crystals
Author(s) -
Larikov L.,
Belyakova M.,
Zakharov S.,
Mudruk P.
Publication year - 1985
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170201017
Subject(s) - materials science , recrystallization (geology) , annealing (glass) , crystallography , dislocation , rotation (mathematics) , composite material , condensed matter physics , geometry , chemistry , geology , physics , mathematics , paleontology
The type of the recovery variety which is accompanied by changes in texture is studied. Reorientation of the surface of compressed Mo crystal was observed during its annealing before recrystallization. As a result, new macroscopic {100} orientation areas appear on the contact crystalline surface of {111} orientation. Turned areas have a more perfect inner structure and correspondingly lesser density of deformation defects. As a result of rotation a high‐angle boundary interface occurs as a “broken boundary”. The transition layer considered is highly stressed and contains microcracks. The boundary interface is shown to be the intensive recrystallization source, where the recrystallization grains are nucleated at the expence of interface dislocation bulgings. The driving forces of the rotation observed and a scheme of a residual stress distribution in the compressed crystal are analysed. According to the scheme a deformed crystalline surface is affected by the compressive stresses and the inner layers are affected by the tensile ones. A relaxation of the internal stresses results from plastic rotations. A rotation moment arising between the surfaces and internal layers of the crystal leads to reorientation.