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ZHANG Hengqing, ZHANG Chonghong, SONG Yin, YANG Yitao, MENG Yancheng, ZHANG Liqing, GOU Jie, Jinsung Jang, Akihiko Kimura. Irradiation Hardening of High-Cr ODS Ferritic Steels Under Helium Implantation and Heavy-ion Irradiation[J]. Nuclear Physics Review, 2015, 32(1): 95-99. DOI: 10.11804/NuclPhysRev.32.01.095
Citation: ZHANG Hengqing, ZHANG Chonghong, SONG Yin, YANG Yitao, MENG Yancheng, ZHANG Liqing, GOU Jie, Jinsung Jang, Akihiko Kimura. Irradiation Hardening of High-Cr ODS Ferritic Steels Under Helium Implantation and Heavy-ion Irradiation[J]. Nuclear Physics Review, 2015, 32(1): 95-99. DOI: 10.11804/NuclPhysRev.32.01.095
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Irradiation Hardening of High-Cr ODS Ferritic Steels Under Helium Implantation and Heavy-ion Irradiation

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  • The present work investigates the irradiation hardening of ODS ferritic steels after multi-energy Heion implantation, or energetic Bi-ion and Xe-ion irradiation, to get an understanding of dependence of irradiationhardening on atomic displacement damage and gas accumulation. Three kinds of high-Cr ODS ferritic steels including the commercial MA956 (19Cr-3.5Al), the 16Cr-0.1Ti and the 16Cr-0.1Zr ODS ferritic steels were used.The results show that the hardness increases rapidly at the lower doses but tends to saturate at the higher dose.An 1/2-power law dependence on dpa value is obtained. Helium implantation contributes significantly to the irradiation hardening, possibly due to the impediment of the motion dislocations by helium bubbles. 16Cr-ODS (Ti or Zr added) ferritic which contains finer oxide particles in higher number density shows higher resistance to irradiation hardening than the MA056.
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