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arXiv 2201.04958cond-mat.mtrl-scinucl-thphysics.app-ph
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基于模型的定量方法预测合金辐照诱导膨胀

Model-based quantitative methods to predict irradiation-induced swelling in alloys

Wei Ge, Shijun Zhao, Chenxu Wang, Haocheng Liu, Yue Su, Jia Huang, Zhiying Gao, Jianming Xue, Steven J. Zinkle, Yugang Wang

摘要:

基于现有的低剂量实验或高剂量率高能粒子辐照数据预测核反应堆结构材料在高剂量中子辐照下的体积膨胀一直是核能系统安全评价和快速筛选抗辐照材料的挑战。在这里,我们建立了一个额外的缺陷吸收模型,该模型描述了由高能电子,重离子和中子产生的辐射诱导的膨胀效应,通过考虑额外的缺陷汇固有的照射过程。在此基础上,我们建立了定量的方法来预测高剂量肿胀从低剂量的行为,并获得了不同的高能粒子的剂量率相差几个数量级时的等效辐照剂量。此外,我们提出了一个通用的参数来表征各种合金的抗溶胀性,并预测其在不同的辐射条件下的辐射耐受性。该工作为评价结构材料的辐照膨胀效应提供了定量预测方法,这对先进核反应堆的安全和材料开发至关重要。

英文摘要:

Predicting volume swelling of structural materials in nuclear reactors under high-dose neutron irradiations based on existing low-dose experiments or irradiation data with high-dose-rate energetic particles has been a long-standing challenge for safety evaluation and rapidly screening irradiation-resistant materials in nuclear energy systems. Here, we build an Additional Defect Absorption Model that describes the irradiation-induced swelling effects produced by energetic electrons, heavy-ions, and neutrons by considering additional defect sinks inherent in the irradiation process. Based on this model, we establish quantitative methods to predict high-dose swelling from low-dose behavior and obtain the equivalent irradiation dose for different energetic particles when the dose rates differ by several orders of magnitude. Furthermore, we propose a universal parameter to characterize the swelling resistance of various alloys and predict their radiation tolerances under different radiation conditions. This work provides quantitative prediction methods for evaluating irradiation-induced swelling effects of structural materials, which is critical to the safety and material development for advanced nuclear reactors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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