English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse
  1. View item / 
  2. Item Summary

Item

ITEM ACTIONSEXPORT
Add to Basket
  DetailsSummary

Released
Journal Article

Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing

MPS-Authors
/persons/resource/persons125330

Raabe,  Dierk
Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
Supplementary Material (public)
There is no public supplementary material available
Citation

Bernardi, H. H., Sandim, H. R. Z., Zilnyk, K. D., Verlinden, B. E., & Raabe, D. (2017). Microstructural Stability of a Niobium Single Crystal Deformed by Equal Channel Angular Pressing. Materials Research-Ibero-American Journal of Materials, 20(5), 1238-1247. doi:10.1590/1980-5373-MR-2017-0288.


Cite as: https://hdl.handle.net/21.11116/0000-0001-6471-F
Abstract
A [211]-oriented niobium single crystal was deformed by equal channel angular pressing (ECAP) at room temperature using the route B-c to a total strain of 9.2. A sharp cube texture develops after ECAP processing. The deformed samples were annealed in vacuum from 400 degrees C (673 K) to 900 degrees C (1173 K) for 1 h to evaluate their microstructural stability. Scanning electron microscopy (SEM) was used to image the microstructures of as-deformed and annealed specimens. Electron backscatter diffraction (EBSD) was employed to determine the respective microtextures before and after annealing. Coarsening of the microstructure occurs at a maximum rate at 550 degrees C (823 K) due to discontinuous recrystallization. Normal grain growth replaces discontinuous recrystallization as the main coarsening mechanism above 700 degrees C (973 K).