Micro-structure and micro-hardness of ODS steels after ion irradiation

被引:42
作者
Liu, C. [1 ]
Yu, C.
Hashimoto, N.
Ohnuki, S.
Ando, M. [2 ]
Shiba, K. [2 ]
Jitsukawa, S. [2 ]
机构
[1] Hokkaido Univ, Grad Sch Engn, Dept Mat Sci, Fac Engn,Kita Ku, Sapporo, Hokkaido 0608628, Japan
[2] JAEA, Tokai Lab, Tokai, Ibaraki 3191195, Japan
关键词
SPALLATION NEUTRON SOURCE; INCONEL-718;
D O I
10.1016/j.jnucmat.2011.01.067
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The radiation-hardening of oxide dispersion strengthened (ODS) alloys was examined using ion irradiation and nano-indentation. In this work, three ODS steels were irradiated in the TIARA facility at JAEA with 10.5 MeV Fe(3+) ions up to a dose of 20 dpa at 250 and 380 degrees C. Micro-hardness measurements were carried out on the ion-irradiated specimens with ultra-low load indention. Micro-structures were investigated by transmission electron microscopy (TEM) to examine the contribution of various types of defects to the radiation-hardening. All three steels showed increases in the hardness after the ion irradiation, and F82H-ODS showed the lowest radiation-hardening, which suggests that F82H-ODS has the better radiation resistance. Small amounts of particle dissolution was also confirmed in all of the steels after the irradiation. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:270 / 273
页数:4
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