Assessment of Irradiation Embrittlement of Domestic RPV Material

Sun Kai; Feng Mingquan; Li Guoyun; Wu Yazhen; Li Furong

doi:10.13832/j.jnpe.2017.S1.0125

Volume 38 Issue S1

Feb. 2025

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Sun Kai, Feng Mingquan, Li Guoyun, Wu Yazhen, Li Furong. Assessment of Irradiation Embrittlement of Domestic RPV Material[J]. Nuclear Power Engineering, 2017, 38(S1): 125-128. doi: 10.13832/j.jnpe.2017.S1.0125

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Sun Kai, Feng Mingquan, Li Guoyun, Wu Yazhen, Li Furong. Assessment of Irradiation Embrittlement of Domestic RPV Material[J]. Nuclear Power Engineering, 2017, 38(S1): 125-128. doi: 10.13832/j.jnpe.2017.S1.0125

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Assessment of Irradiation Embrittlement of Domestic RPV Material

doi: 10.13832/j.jnpe.2017.S1.0125

Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2017-04-21
Rev Recd Date: 2017-05-31

Available Online: 2025-02-09

Abstract

Abstract

The Charpy impact specimen and 0.5T-CT specimen extracted from a certain domestic RPV material are irradiated in HFETR with fast neutron（E＞1 Me V）influence of 3.0×10¹⁹ cm^-2. In accordance with unirradiated and irradiated Charpy impact test, the measured ΔRT_NDT is 48℃, while, according to the fracture toughness test in ductile-brittle transition region, the measured ΔT₀ is 53℃, these actual measurement results demonstrate that the irradiation embrittlement effect is obvious. The RT_T0 based on the fracture mechanics methodology to be an alternative indexing to RTNDT could further exploit the underlying safety margin of RPV and improve the economy of NPP.
- RPV material,
- Irradiation embrittlement,
- ΔRT_NDT,
- ΔT₀

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