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Effect of Specimen Size on Fatigue Properties of Reduced Activation Ferritic/Martensitic Steel

机译:试样大小对减少活化铁素体/马氏体钢疲劳性能的影响

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Small Specimen Testing Technology (SSTT) and related remote-control testing techniques are indispensable for the effective use of the limited volumes of material testing reactors and proposed intense neutron sources. As a part of this work, a new fatigue test machine with a laser extensometer for hot-cell usage has been developed. Materials used in this work were Japanese reduced activation ferritic/martensitic steel, JLF-1 (Fe-9Cr-2W-V-Ta) and its weldment. Correlations between fatigue life characteristics and fracture mechanisms were investigated for full- and mini-sized hourglass type specimens to clarify the effect of specimen size on fatigue properties. These tests revealed that there was not significant difference in the number of cycles to failure in both specimens.
机译:小型试样测试技术(SSTT)和相关的遥控测试技术对于有效使用有限的材料检测反应器和提出的强态中子源是必不可少的。作为这项工作的一部分,已经开发出具有激光突出仪的新型疲劳试验机,用于热小区使用。本作工作中使用的材料是日本减少的激活铁素体/马氏体钢,JLF-1(FE-9CR-2W-V-TA)及其焊接。研究了疲劳寿命特性与骨折机制之间的相关性,用于全尺寸和迷你尺寸的沙漏型试样,以阐明样品大小对疲劳性能的影响。这些测试表明,两个标本中失效的循环次数没有显着差异。

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