Abstract
Characterization of stress has long been recognized as essential for the prediction of materials behavior. However, direct three-dimensional (3-D) measurements of sub-grain microscopic stress tensor distributions have not been available to guide theories of mesoscale dynamics. Here we report on advances in software and instrumentation that make it possible to determine 3-D stress tensor distributions in polycrystalline materials with a spatial resolution below the grain size of most materials. Based on the success of a prototype, a powerful 3-D x-ray crystal microscope is now being constructed to push stress measurements to gauge volumes less than 0.25 cubic microns. The UnicatII beamline 34-ID microscope will provide new information certain to challenge emerging models of mesoscale dynamics and to identify and quantify previously hidden mesoscopic processes.
Original language | English |
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Pages | 402-407 |
Number of pages | 6 |
State | Published - 1 Dec 2000 |
Event | Heat Treating: Proceedings of the 20th Conference - St. Louis, MO, United States Duration: 9 Oct 2000 → 12 Oct 2000 |
Conference
Conference | Heat Treating: Proceedings of the 20th Conference |
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Country | United States |
City | St. Louis, MO |
Period | 9/10/00 → 12/10/00 |