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首页> 外文期刊>Journal of Materials Research >Irradiation resistance of nanostructured interfaces in Zr-Nb metallic multilayers
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Irradiation resistance of nanostructured interfaces in Zr-Nb metallic multilayers

机译：Zr-Nb金属多层膜中纳米结构界面的耐辐照性

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摘要

Irradiation resistance of metallic nanostructured multilayers is determined by the interactions between defects and phase boundaries. However, the dose-dependent interfacial morphology evolution can greatly change the nature of the defect-boundary interaction mechanisms over time. In the present study, we used atomistic models combined with a novel technique based on the accumulation of Frenkel pairs to simulate irradiation processes. We examined dose effects on defect evolutions near zirconium-niobium multilayer phase boundaries. Our simulations enabled us to categorize defect evolution mechanisms in bulk phases into progressing stages of dislocation accumulation, saturation, and coalescence. In the metallic multilayers, we observed a phase boundary absorption mechanism early on during irradiation, while at higher damage levels, the increased irradiation intermixing triggered a phase transformation in the Zr-Nb mixture. This physical phenomenon resulted in the emission of a large quantity of small immobile dislocation loops from the phase boundaries.
机译：金属纳米结构多层的耐辐照性由缺陷和相界之间的相互作用决定。但是，随着时间的推移，剂量依赖性界面形态的演化可以极大地改变缺陷边界相互作用机制的性质。在本研究中，我们将原子模型与基于Frenkel对累积的新技术结合使用来模拟辐照过程。我们检查了剂量对锆-铌多层相边界附近缺陷演变的影响。我们的模拟使我们能够将体相中的缺陷演化机制分类为位错累积，饱和和合并的进行阶段。在金属多层板中，我们在辐照期间就观察到了相边界吸收机制，而在更高的损伤水平下，辐照混合的增加触发了Zr-Nb混合物的相变。这种物理现象导致从相界发射出大量小的不动位错环。

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  • 来源
    《Journal of Materials Research》 |2019年第13期|2239-2251|共13页
  • 作者

    Chen Elton Y.; Deo Chaitanya; Dingreville Remi;

  • 作者单位

    Georgia Inst Technol, George W Woodruff Sch Mech Engn, Nucl & Radiol Engn Program, Atlanta, GA 30332 USA|Sandia Natl Labs, Dept Nanostruct Phys, Ctr Integrated Nanotechnol, POB 5800, Albuquerque, NM 87185 USA;

    Georgia Inst Technol, George W Woodruff Sch Mech Engn, Nucl & Radiol Engn Program, Atlanta, GA 30332 USA|Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA;

    Sandia Natl Labs, Dept Nanostruct Phys, Ctr Integrated Nanotechnol, POB 5800, Albuquerque, NM 87185 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    radiation effects; simulation; composite;

    机译：辐射效应;模拟;复合;

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