Study of the effect of helium, irradiation, and temperature on the embrittlement of Inconel X-750 CANDU garter spring spacers

氦气、辐照和温度对 Inconel X-750 CANDU 卡簧垫片脆化影响的研究

• 批准号: 469710-2014
• 负责人: Klassen, Robert
• 金额: $ 2.19万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=598459
• 关键词: Study; effect; helium; irradiation; temperature

This proposed project will use high energy ion irradiation combined with micro-mechanical testing and micro-structural analyses to assess the effect of irradiation damage, irradiation temperature, and helium accumulation on the strength, ductility, and tendency for grain-boundary embrittlement of Inconel X-750 CANDU garter spring spacers. Various amounts of helium ions will be implanted, at two temperatures, into Inconel X-750 samples followed by implantation of high energy nickel ions to invoke crystallographic damage similar to that resulting from neutron irradiation. Nano-indentation hardness testing will be used to assess the combined effect of the accumulated helium and ion-irradiation damage on the hardness of the Inconel alloy. Focused ion beam milling will be used to fabricate cantilever micro-beams, about 100 micrometers in length, across selected grain boundaries of the ion-implanted samples. These beams will then be tested by bending to assess the effect of the helium and irradiation damage on the strength of the grain boundaries.

该项目将使用高能离子辐照，结合微观机械测试和微观结构分析，评估辐照损伤、辐照温度和氦积累对Inconel X-750 CANDU吊袜弹簧垫片的强度、塑性和晶界脆化倾向的影响。在Inconel X-750样品中，将在两个温度下注入不同数量的氦离子，然后注入高能镍离子，以引起类似于中子辐射所造成的晶体损伤。将使用纳米压痕硬度测试来评估累积的氦和离子辐照损伤对Inconel合金硬度的综合影响。聚焦离子束球磨将被用来制造长约100微米的悬臂梁，横跨离子注入样品的选定晶界。然后对这些梁进行弯曲测试，以评估氦和辐射损伤对晶界强度的影响。