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On the potentiality of using ferritic/martensitic stells as structural materials for fusion reactors

机译:用铁素体/马氏体作为聚变反应堆的结构材料的潜力

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摘要

Reduced activation ferritic/martensitic (RAFM) steels are the reference structural materials for future fusion reactors. They have proven to be a good alternative to austenitic steels for their higher swelling resistance, lower damage accumulation and improved thermal properties. However, irradiated RAFM steels exhibit a low temperature hardening and an increase in the ductile-to-brittle transition temperature, which imposes a severe restriction on reactor applications at temperatures below about 350 ℃. Furthermore, a high density of small cavities (voids or ehlium bubbles) has been recently evidenced in specimens irradiated with a mixed spectrum of neutrons and protons at about 300 ℃ at a dose of 10 dpa, which could affect their fracture properties at intermediate temperatures. The upper temperature for the use of RAFM steels is presently limited by a drop in mechanical strength at about 500 ℃ New variants that can withstand higher temperatures are currently being developed, mainly using a stable oxide dispersion. This paper reviews European activity in the development of RAFM steels.
机译:减少活化的铁素体/马氏体(RAFM)钢是未来聚变反应堆的参考结构材料。它们被证明是奥氏体钢的良好替代品,因为它们具有更高的抗溶胀性,较低的损伤累积和改善的热性能。但是,辐照过的RAFM钢表现出低温硬化作用,并且韧性到脆性转变温度升高,这严重限制了反应器在温度低于350℃时的应用。此外,最近已在约300℃,剂量为10 dpa的中子和质子混合光谱辐照的样品中发现了高密度的小腔体(空洞或eh气泡),这可能会影响它们在中温下的断裂性能。目前,使用RAFM钢的最高温度受到约500℃的机械强度下降的限制。目前正在开发可以承受更高温度的新变体,主要使用稳定的氧化物分散体。本文回顾了欧洲在RAFM钢发展中的活动。

著录项

  • 来源
    《Nuclear fusion》 |2004年第1期|p. 56-61|共6页
  • 作者单位

    Fusion Technology-Materials, CRPP-EPFL, Association EURATOM-Suisse Confederation, 5232 Villigen-PSI, Switzerland;

    Fusion Technology-Materials, CRPP-EPFL, Association EURATOM-Suisse Confederation, 5232 Villigen-PSI, Switzerland;

    Fusion Technology-Materials, CRPP-EPFL, Association EURATOM-Suisse Confederation, 5232 Villigen-PSI, Switzerland;

    Fusion Technology-Materials, CRPP-EPFL, Association EURATOM-Suisse Confederation, 5232 Villigen-PSI, Switzerland;

  • 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 原子核物理学、高能物理学;
  • 关键词

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