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Irradiation induced dislocation loop and its influence on the hardening behavior of Fe-Cr alloys by an Fe ion irradiation |
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| Authors: | Hyung-Ha Jin Chansun Shin |
| Affiliation: | a Nuclear Materials Research Division, Korea Atomic Energy Research Institute, 1045 Daedeok-daero, Yuseong-Gu, Daejeon 305-353, Republic of Korea b School of Materials Science and Engineering, Seoul National University, 599 Gwanangno, Gwanak-gu, Seoul, 151-742, Republic of Korea |
| Abstract: | Nano indentation analysis and transmission electron microscopy observation were performed to investigate a microstructural evolution and its influence on the hardening behavior in Fe-Cr alloys after an irradiation with 8 MeV Fe4+ ions at room temperature. Nano indentation analysis shows that an irradiation induced hardening is generated more considerably in the Fe-15Cr alloy than in the Fe-5Cr alloy by the ion irradiation. TEM observation reveals a significant population of the a0<1 0 0> dislocation loops in the Fe-15Cr alloy and an agglomeration of the 1/2a0<1 1 1> dislocation loops in the Fe-5Cr alloy. The results indicate that the a0<1 0 0> dislocation loops will act as stronger obstacles to a dislocation motion than 1/2a0<1 1 1> dislocation loops. |
| Keywords: | 61 72 &minus y 61 72 Ff 61 80 &minus X 61 80 Jh 61 82 Bg |
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