Abstract
The effects of displacement damage and trapped helium on deformation microstructures in AISI 316 LN austenitic stainless steel were studied by applying a newly developed disk bend method to specimens irradiated with 360 keV He ions at 200°C. Radiation damage microstructures consisted of an intimate mix of black dots, dislocation loops, and very small helium filled cavities. In the unirradiated specimens, the deformation mode upon straining was planar glide with cross-slip. With increasing dose, cross-slip was progressively restricted. Correspondingly, deformation microstructure changed from dislocation network dominant to channeling dominant. The channel bands were composed of piled-up dislocations, stacking faults, and twinned layers.
| Original language | English |
|---|---|
| Pages (from-to) | 183-191 |
| Number of pages | 9 |
| Journal | Journal of Nuclear Materials |
| Volume | 296 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - Jul 2001 |
| Event | 4th International Workshop on Spallation Materials Technology - Schruns, Austria Duration: Oct 8 2000 → Oct 13 2000 |
Funding
Research sponsored by the Division of Material Sciences and Engineering, Office of Basic Energy Sciences, US Department of Energy, under contract No. DE-AC05-00OR22725 with UT-Battelle, LLC.