Dose dependence of irradiation hardening of binary ferritic alloys irradiated with Fe3+ ions
Dose dependence of irradiation hardening of binary ferritic alloys irradiated with Fe3+ ions
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DOI：
10.1016/j.jnucmat.2010.12.204
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发表时间：
2011-10
影响因子：
3.1
通讯作者：
K. Yabuuchi;Hiroki Yano;R. Kasada;H. Kishimoto;A. Kimura
中科院分区：
文献类型：
--
作者：
K. Yabuuchi;Hiroki Yano;R. Kasada;H. Kishimoto;A. Kimura
采用纳米压痕技术研究了不同合金元素对Fe ~（3+）离子辐照不同Fe基二元合金辐照硬化行为的影响。用6.4MeV的Fe 3+离子辐照纯Fe、Fe-1Cr、Fe-1 Mn、Fe-1.5Mn、Fe-1 Ni、Fe-1Cu和Fe-1 Mo，使其在290°C下以1×10−4dpa/s的损伤率达到0.1、0.3和1dpa的标称位移损伤水平。在290°C下辐照至1dpa后，Fe-1 Mn、Fe-1.5Mn和Fe-1 Ni以及Fe-1Cu都出现了明显的辐照硬化，而纯铁、Fe-1Cr和Fe-1 Mo没有出现明显的辐照硬化。饱和拟合模型很好地解释了辐照硬化的剂量依赖性。显微组织观察表明，Fe-Mn二元合金中辐照诱发的基体缺陷促进了合金的辐照硬化。
The effects of alloying elements on irradiation hardening behavior of various Fe-based binary alloys irradiated with Fe3+ions were investigated by using the nano-indentation technique. Ion-irradiations with 6.4MeV Fe3+were performed on Pure-Fe, Fe–1Cr, Fe–1Mn, Fe–1.5Mn, Fe–1Ni, Fe–1Cu, and Fe–1Mo to nominal displacement damage levels of 0.1, 0.3 and 1dpa, at a damage rate of 1×10−4dpa/s at 290°C. Significant irradiation hardening was observed in the Fe–1Mn, Fe–1.5Mn and Fe–1Ni as well as in the Fe–1Cu, but not in the Pure-Fe, Fe–1Cr and Fe–1Mo, after irradiation to 1dpa at 290°C. The dose dependence of the irradiation hardening was well explained for all the alloys by the saturation fitting model. Microstructural observation suggested that irradiation induced matrix defects in Fe–Mn binary alloy promoted the irradiation hardening.