A low-temperature-resistant and high-strength stainless-steel jacket is a key component in the superconducting magnet of a fusion reactor.The development of cryogenic structural materials with high strength and toughn...A low-temperature-resistant and high-strength stainless-steel jacket is a key component in the superconducting magnet of a fusion reactor.The development of cryogenic structural materials with high strength and toughness poses a challenge for the future development of high-field superconducting magnets in fusion reactors.The yield strength of the International Thermonuclear Experimental Reactor developed for low-temperature structural materials at 4.2K is below 1100MPa,which fails to meet the demand for structural components with yield strengths exceeding 1500MPa at 4.2K in the future fusion reactors.CHSN01(formerly N50H),which is a low-temperature structural material developed in China,exhibits exceptional strength and toughness,thereby making it highly promising for practical applications.Recently,a 30 t jacket measuring approximately 5000m in total length was produced.Its low-temperature mechanical properties were tested using a sampling method to ensure compliance with application requirements.This paper presents the experimental data of the CHSN01 jacket and tests of the physical properties of the material in the temperature range of 4–300 K.The physical properties were unaffected by magnetic field.Furthermore,this paper discusses the feasibility of employing CHSN01 as a cryogenic structural material capable of withstanding high magnetic fields in next-generation fusion reactors.展开更多
【本刊2026年2月综合报道】2026年1月,美国橡树岭国家实验室(ORNL)宣布将与相关方合作建设两座聚变材料测试设施,即高热通量材料测试设施和聚变堆增殖包层测试设施。1月28日,橡树岭国家实验室、Type One能源公司(Type One Energy)与田...【本刊2026年2月综合报道】2026年1月,美国橡树岭国家实验室(ORNL)宣布将与相关方合作建设两座聚变材料测试设施,即高热通量材料测试设施和聚变堆增殖包层测试设施。1月28日,橡树岭国家实验室、Type One能源公司(Type One Energy)与田纳西大学诺克斯维尔分校联合宣布,将合作在田纳西流域管理局(TVA)布尔伦(Bull Run)能源综合基地建设高热通量设施,用于评估聚变装置极端工况下材料的性能,重点服务于第一壁和偏滤器等面向等离子体部件的研发与验证。这些部件在聚变装置运行中承受最高热负荷和最严苛环境。展开更多
国际原子能机构(International Atomic Energy Agency,简称IAEA)发布的《Safety Classification of Structures,Systems and Components in Nuclear Power Plants》(No.SSG-30)从安全功能分类和设计预防措施两个维度出发,结合失效后果...国际原子能机构(International Atomic Energy Agency,简称IAEA)发布的《Safety Classification of Structures,Systems and Components in Nuclear Power Plants》(No.SSG-30)从安全功能分类和设计预防措施两个维度出发,结合失效后果严重程度、物项类型等因素,为核电厂构筑物、系统和部件(SSCs)的安全分级提供了具有可操作性的方法论框架。本文基于SSG-30,对核电饱和式蒸汽发生器主要零部件的安全分级进行了研究,对其承压边界、内部构件及密封组件等关键部件进行了安全分级探讨,并根据防振条组件和套筒支承板的安全分级开展了力学评估分析。经分析,基于SSG-30的核电蒸汽发生器分级可为核电设备分级和力学评估提供参考,对于核电机组的安全运行水平具有重要的意义。展开更多
基金supported in part by the National Natural Science Foundation of China(No.12305196)Anhui Provincial Natural Science Foundation(No.2308085QA23)+1 种基金Open Fund of Magnetic confinement Fusion Laboratory of Anhui Province(No.2023AMF03003)Science Foundation of Institute of Plasma Physics,Chinese Academy of Sciences(No.DSJJ-2024-10).
文摘A low-temperature-resistant and high-strength stainless-steel jacket is a key component in the superconducting magnet of a fusion reactor.The development of cryogenic structural materials with high strength and toughness poses a challenge for the future development of high-field superconducting magnets in fusion reactors.The yield strength of the International Thermonuclear Experimental Reactor developed for low-temperature structural materials at 4.2K is below 1100MPa,which fails to meet the demand for structural components with yield strengths exceeding 1500MPa at 4.2K in the future fusion reactors.CHSN01(formerly N50H),which is a low-temperature structural material developed in China,exhibits exceptional strength and toughness,thereby making it highly promising for practical applications.Recently,a 30 t jacket measuring approximately 5000m in total length was produced.Its low-temperature mechanical properties were tested using a sampling method to ensure compliance with application requirements.This paper presents the experimental data of the CHSN01 jacket and tests of the physical properties of the material in the temperature range of 4–300 K.The physical properties were unaffected by magnetic field.Furthermore,this paper discusses the feasibility of employing CHSN01 as a cryogenic structural material capable of withstanding high magnetic fields in next-generation fusion reactors.
文摘【本刊2026年2月综合报道】2026年1月,美国橡树岭国家实验室(ORNL)宣布将与相关方合作建设两座聚变材料测试设施,即高热通量材料测试设施和聚变堆增殖包层测试设施。1月28日,橡树岭国家实验室、Type One能源公司(Type One Energy)与田纳西大学诺克斯维尔分校联合宣布,将合作在田纳西流域管理局(TVA)布尔伦(Bull Run)能源综合基地建设高热通量设施,用于评估聚变装置极端工况下材料的性能,重点服务于第一壁和偏滤器等面向等离子体部件的研发与验证。这些部件在聚变装置运行中承受最高热负荷和最严苛环境。
文摘国际原子能机构(International Atomic Energy Agency,简称IAEA)发布的《Safety Classification of Structures,Systems and Components in Nuclear Power Plants》(No.SSG-30)从安全功能分类和设计预防措施两个维度出发,结合失效后果严重程度、物项类型等因素,为核电厂构筑物、系统和部件(SSCs)的安全分级提供了具有可操作性的方法论框架。本文基于SSG-30,对核电饱和式蒸汽发生器主要零部件的安全分级进行了研究,对其承压边界、内部构件及密封组件等关键部件进行了安全分级探讨,并根据防振条组件和套筒支承板的安全分级开展了力学评估分析。经分析,基于SSG-30的核电蒸汽发生器分级可为核电设备分级和力学评估提供参考,对于核电机组的安全运行水平具有重要的意义。
