Comparison of the Yield Strength of Ion Irradiated Low Activation Ferritic/Martensitic Steel Extracted from Different Indenters
ZHAN Zixiong1, HUANG Xi1,*, WEI Lihua2, YANG Xiya3, LI Qingshan4, LI Xiaoyan1
1 School of Nuclear Science and Engineering, East China University of Technology, Nanchang 330013, China 2 School of Chemistry Biology and Materials Science, East China University of Technology, Nanchang 330013, China 3 Shandong Iron Group Rizhao Co., Ltd., Rizhao 276899, Shandong, China 4 Wangxiang Qianchao Co., Ltd., Hangzhou 311215, China
Abstract: The yield strength of low-activation ferritic/martensitic steel irradiated at 550 ℃ with different doses was extracted by Berkovich and Spherical indenter for comparison with each other. The results show that an obvious irradiation induced hardening behavior was observed, while the hardness first increased and then decreased with the increasing of irradiation dose. Regarding the unirradiated samples, the difference of yield strength extracted by these two indenters was smaller, but they were both higher than the yield strength obtained from the tensile experiments. For irradiated samples, the yield strength extracted by spherical indenter was significantly higher than that by Berkovich indenter. The maximum difference in yield strength (Δσy) between them was 43%. Comparing the irradiation effect on the yield strength extracted using both Berkovich and spherical indenters, it can be found that the values obtained from the spherical indenter were closer to these obtained from the neutron irradiated sample in comparison to the Berkovich indenter. The reasons caused this significant gap in Δσy were attributed to the effect of the indenter shape, penetration depth, and the height of pile-up.
詹子雄, 黄希, 韦丽华, 杨西亚, 李清山, 李小燕. 比较不同压头提取离子辐照后低活化铁素体/马氏体钢屈服强度的差异[J]. 材料导报, 2023, 37(18): 22010165-6.
ZHAN Zixiong, HUANG Xi, WEI Lihua, YANG Xiya, LI Qingshan, LI Xiaoyan. Comparison of the Yield Strength of Ion Irradiated Low Activation Ferritic/Martensitic Steel Extracted from Different Indenters. Materials Reports, 2023, 37(18): 22010165-6.
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2023, Vol. 37 
