| Numéro |
J. Phys. IV France
Volume 10, Numéro PR6, April 2000
The Sixth Japan-France Materials Science SeminarJFMSS-6 Microstructural Design for Improved Mechanical Behaviour of Advanced Materials |
|
|---|---|---|
| Page(s) | Pr6-173 - Pr6-178 | |
| DOI | https://doi.org/10.1051/jp4:2000630 | |
JFMSS-6
Microstructural Design for Improved Mechanical Behaviour of Advanced Materials
J. Phys. IV France 10 (2000) Pr6-173-Pr6-178
DOI: 10.1051/jp4:2000630
Misorientation dependence of grain boundary segregation under electron irradiation in an austenitic stainless steel
S. Watanabe1, Y. Takamatsu2, N. Sakaguchi2 and Heishichiro Takahashi21 Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
2 Center for Advanced Research of Energy Technology, Hokkaido University, Sapporo 060-8628, Japan
Abstract
The effect of grain boundary misorientation on intergranular Radiation-Induced Segregation (RIS) in an Fe-15Cr-20Ni alloy was studied using a high voltage electron microscope (HVEM) at Hokkaido University HVEM facility and a rate equation model for RIS which incorporated grain boundary sink strength. The <110> tilt grain boundaries were chosen for the present study. It was observed that after electron irradiation with 3x10-3 dpa/s to 3 dpa at both temperatures of 623 K and 723 K, RIS was enhanced as the tilt angle increases but was suppressed at coincidence grain boundaries (∑9 and ∑3). The present result indicates that one needs explicitly to consider the grain boundary sink strength for point defects as an important factor affecting radiation induced grain boundary phenomena.
© EDP Sciences 2000