Micro-structure and micro-hardness of ODS steels after ion irradiation
Micro-structure and micro-hardness of ODS steels after ion irradiation
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DOI：
10.1016/j.jnucmat.2011.01.067
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发表时间：
2011-10
影响因子：
3.1
通讯作者：
C. Liu;C. Yu;N. Hashimoto;S. Ohnuki;M. Ando;K. Shiba;S. Jitsukawa
中科院分区：
文献类型：
--
作者：
C. Liu;C. Yu;N. Hashimoto;S. Ohnuki;M. Ando;K. Shiba;S. Jitsukawa
采用离子辐照和纳米压痕相结合的方法研究了氧化物弥散强化(Ods)合金的辐照硬化性能。在这项工作中，在JAEA的Tiara设施中，用10.5 MeV的Fe3+离子在250℃和380°C下照射了剂量高达20dpa的三种ODS钢，并以超低载荷压痕对离子辐照的试件进行了显微硬度测量。用透射电子显微镜观察了样品的微观结构，考察了各种缺陷对辐照硬化的贡献。离子辐照后，三种钢的硬度均有不同程度的提高，其中F82H-ODS钢的辐照硬化程度最低，说明F82H-ODS钢具有较好的抗辐照性能。所有的钢在辐照后都有少量的颗粒溶解。
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 10.5MeV Fe3+ions up to a dose of 20dpa at 250 and 380°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.