Observation of dislocation dynamics in the electron microscope

Deformation experiments performed in situ in the transmission electron microscope have led to an increased understanding of dislocation dynamics. To illustrate the capability of this technique two examples will be presented. In the first example, the processes of work hardening in Mo at room tempera...

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Published inMaterials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 309; pp. 445 - 450
Main Authors Lagow, B.W, Robertson, I.M, Jouiad, M, Lassila, D.H, Lee, T.C, Birnbaum, H.K
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.07.2001
Subjects
Dislocation dynamics
Dislocation–obstacle interactions
Transmission electron microscope
Dislocation dynamics
Dislocation–obstacle interactions
Transmission electron microscope
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Summary:Deformation experiments performed in situ in the transmission electron microscope have led to an increased understanding of dislocation dynamics. To illustrate the capability of this technique two examples will be presented. In the first example, the processes of work hardening in Mo at room temperature will be presented. These studies have improved our understanding of dislocation mobility, dislocation generation, and dislocation–obstacle interactions. In the second example, the interaction of matrix dislocations with grain boundaries will be described. From such studies predictive criteria for slip transfer through grain boundaries have been developed.
ISSN:0921-5093
1873-4936
DOI:10.1016/S0921-5093(00)01699-3