Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 414, Issue 2, Pages 232-236Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2011.03.049
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Funding
- Grants-in-Aid for Scientific Research [21246104, 19106013] Funding Source: KAKEN
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Austenitic stainless steel PNC316 was subjected to grain boundary engineering (GBE). It was found that the grain boundary engineered PNC316 (PNC316-GBEM) had a coincidence site lattice (CSL) fraction of 86% and that the network of random grain boundaries was perfectly divided by the CSL boundaries. The thermal stability and the void swelling behavior of PNC316-GBEM were investigated by means of SEM and TEM analyses. After thermal aging at 973 K for 100 h, structural changes were observed neither in the grain boundary networks of PNC316-GBEM nor in another sample of PNC316-GBEM subjected to 20% additional cold rolling, PNC316-GBEM20%CW. PNC316-GBEM showed a higher void swelling rate than as-received PNC316 (PNC316-AS). However, with additional 20% cold rolling after GBE, the void swelling rate decreased to as low as that of PNC316-AS. (C) 2011 Elsevier B.V. All rights reserved.
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