Study on Irradiation Temperature Impact on Irradiation Embrittlement Behavior of RPV Material

Dong Yuanyuan; Luo Ying; Du Hua; Hu Tian; Wang Xiaotong

doi:10.13832/j.jnpe.2024.S2.0102

Volume 45 Issue S2

Jan. 2025

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Dong Yuanyuan, Luo Ying, Du Hua, Hu Tian, Wang Xiaotong. Study on Irradiation Temperature Impact on Irradiation Embrittlement Behavior of RPV Material[J]. Nuclear Power Engineering, 2024, 45(S2): 102-109. doi: 10.13832/j.jnpe.2024.S2.0102

Citation:

Dong Yuanyuan, Luo Ying, Du Hua, Hu Tian, Wang Xiaotong. Study on Irradiation Temperature Impact on Irradiation Embrittlement Behavior of RPV Material[J]. Nuclear Power Engineering, 2024, 45(S2): 102-109. doi: 10.13832/j.jnpe.2024.S2.0102

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Study on Irradiation Temperature Impact on Irradiation Embrittlement Behavior of RPV Material

doi: 10.13832/j.jnpe.2024.S2.0102

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2024-06-13
Rev Recd Date: 2024-11-10
Publish Date: 2025-01-06

Abstract

Abstract

Reactor Pressure Vessel (RPV) suffers strong neutron radiation, which induces significant irradiation damage for RPV with the dose accumulation, and irradiation temperature is one of the key factors affecting its irradiation damage. However, at present, the research on the mechanism of irradiation temperature is insufficient. Aiming at the above problems, the existing prediction model analysis, in-situ ion simulated irradiation test and multi-scale simulation calculation are carried out. The temperature range of commonly used radiation embrittlement prediction formula is 275~310°C, which isn't applicable for low irradiation temperature condition. In-situ ion irradiation tests at different temperatures are conducted. The results show that the sizes of irradiated dislocation loops increase and the densities decrease with the increase of irradiation temperature. The results of multi-scale simulation show that the irradiation temperature has no obvious influence on the generation process of irradiation defects, but has obvious influence on the evolution and stabilization of irradiation defects. The lower the irradiation temperature, the more serious the embrittlement of materials is. The study reveals the mechanism and law of the influence of irradiation temperature on the radiation embrittlement behavior of RPV material.
- RPV material,
- Irradiation temperature,
- Irradiation embrittlement,
- In-situ ion irradiation,
- Multi-scale simulation

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References(19)

References

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