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首页> 外文期刊>ISIJ international >Manipulating Dislocations Using Electric Field to Repair Embrittlement Damage
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Manipulating Dislocations Using Electric Field to Repair Embrittlement Damage

机译：使用电场操纵脱位以修复脆化损伤

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摘要

Dislocation defects induced by neutron irradiation can degrade the mechanical properties of reactor pressure vessel steel; although the properties can be restored by annealing, this treatment is energy- and time-intensive. A fast and energy-efficient method of decreasing the dislocation density is urgently needed. In this study, electric pulse treatment was applied to damaged A508-3 steel to remove the dislocation defects quickly. The pulsed electric current reduced the dislocation density in a brittle sample and improved the impact toughness. After electric pulse treatment, the ductile-brittle transition temperature was 11.8°C lower. Calculations revealed that the higher temperature around the dislocations and the electron wind force under the electric field decreased the activation energy of dislocation motion, causing the dislocations to move more easily. The dislocation defects can be annihilated as they move, decreasing the dislocation density.
机译：中子辐射诱导的位错缺陷可以降低反应器压力容器钢的机械性能;虽然可以通过退火恢复性能，但这种处理是能量和时间密集的。迫切需要快速和节能的降低位错密度的方法。在这项研究中，施加电动脉冲处理损坏了A508-3钢，以快速去除位错缺陷。脉冲电流降低了脆性样品中的位错密度并改善了冲击韧性。电脉冲处理后，延性 - 脆性过渡温度为11.8℃。计算显示，围绕脱位围绕的较高温度和电场下的电子风力降低了位错运动的激活能量，导致脱位更容易移动。在移动时，脱位缺陷可能会被歼灭，降低位错密度。

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  • 来源
    《ISIJ international》 |2020年第8期|1803-1809|共7页
  • 作者

    Xin BA; Mengcheng ZHOU; Xinfang ZHANG; Hui WANG;

  • 作者单位

    State Key Laboratory of Advance Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China;

    State Key Laboratory of Advance Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China;

    State Key Laboratory of Advance Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China;

    Science and Technology on Reactor Fuel and Materials Laboratory Nuclear Power Institute of China Chengdu 610041 P.R. China;

  • 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

    A508-3 steel; irradiation embrittlement; dislocation density; pulsed electric current;

    机译：A508-3钢;照射脆化;脱臼密度;脉冲电流;

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