New Synchrotron X-Ray Techniques for In-Situ Deformation Studies

Published

February 19, 2017

Author(s)

Lyle E. Levine, R Thomson, Gabrielle G. Long, David R. Black

Abstract

Many types of defects contribute to local and long-range stresses and strains in materials. These include vacancies, voids, prismatic loops, interstitials, inclusions, and dislocations. In most cases, dislocations play the dominant role in minimizing long-range stresses in a material by concentrating large amounts of strain within the dislocation core. This cancellation of long-range stresses results in a large decrease in the energy of the system, and thus is a strong driving force for dislocation motion. The degree to which dislocations can cancel out stresses thus depends upon their mobility, and the process of stress cancellation can be considered as a competition between energetics and kinetics. Nowhere is this competition more evident than during the plastic deformation of metals.

Conference Dates

July 5-11, 1998

Conference Location

Undefined

Conference Title

International Conference on Composites Engineering

Pub Type

Conferences

Keywords

deformation, diffraction imaging, dislocations, line profiles, small-angle scattering

Citation

Levine, L. , Thomson, R. , Long, G. and Black, D. (2017), New Synchrotron X-Ray Techniques for In-Situ Deformation Studies, International Conference on Composites Engineering, Undefined (Accessed October 8, 2025)