SYMPOSIA PAPER Published: 09 February 2018
STP87019850020

Correlation of Yield Strength with Irradiation-Induced Microstructure in AISI Type 316 Stainless Steel

Source

Improvements in the correlation of radiation-induced change in yield strength in AISI Type 316 stainless steel with microstructure were made by re-examining the role of short-range obstacles. Effects due to the size of the obstacles relative to their spacing and shape of the obstacles were applied. In addition, the concept of shearing the precipitates instead of bowing around them was used to explain the effects of precipitate hardening. In this analysis, it is concluded that large changes in yield strength may be produced in high swelling materials. Voids will dominate the hardening at high displacements per atom (dpa). The increase in hardening will depend on the diameter of the voids even though the swelling in the material is the same. Precipitate hardening at high fluence (>15 dpa) make a significant contribution for irradiation temperatures above 500°C.

Author Information

Simons, Robert, L.
Hanford Engineering Development Laboratory, Richland, WA, US
Hulbert, Laura, A.
Department of Applied Mathematics, Cornell University, Ithica, NY, US
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Details
Developed by Committee: E10
Pages: 820–839
DOI: 10.1520/STP87019850020
ISBN-EB: 978-0-8031-7679-9
ISBN-13: 978-0-8031-0592-8