High-resolution and conventional electron microscopy study of a Sigma=3, [101]{121} twin grain boundary in molybdenum

Authors
Vystavel, T Penisson, JM Gemperle, A
Citation
T. Vystavel et al., High-resolution and conventional electron microscopy study of a Sigma=3, [101]{121} twin grain boundary in molybdenum, PHIL MAG A, 81(2), 2001, pp. 417-429
Citations number
32
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS ANDMECHANICAL PROPERTIES
ISSN journal
13642804 → ACNP
Volume
81
Issue
2
Year of publication
2001
Pages
417 - 429
Database
ISI
SICI code
1364-2804(200102)81:2<417:HACEMS>2.0.ZU;2-M
Abstract
Complete structural analysis of a Mo bicrystal containing a Sigma =3, [101] (1 (2) over bar1)(A) grain boundary (GB) was achieved by means of transmiss ion electron microscopy from the microscopic to the nanoscopic level. Secon dary GB dislocations compensating a small deviation from the exact Sigma =3 concidence were observed and their character was determined. Rigid-body di splacements (RBDs) were determined directly from high-resolution electron m icroscopy images using samples with surface normal parallel and perpendicul ar to the tilt axis. Measured values of RBDs are compared with recent theor etical calculations.