Studies on Precise estimation of local mechanical properly change of irradiated fusion materials

辐照聚变材料局部力学特性变化的精确估计研究

• 批准号: 08458137
• 负责人: MUROGA Takeo
• 金额: $ 5.18万
• 依托单位: National Institute for Fusion Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08458137/
• 关键词: fusion materials; micro hardness; radiation damage; ion irradiation; mechamical property; fracture foughness; 破壊靱性

Microhardness of heavy-ion irradiated materials has been carried out by means of microindentation. The analysis code for the estimation of hardness of the thin surface layer using the load-indentation depth curve during loading and unloading was developed and applied to1. Helium co-implanted low antivation ferritic steel irradiated with Ni ions2. Tantalum irradiated with Cu ions and3. Si02 irradiated with He or H ions.The hardness increase of the low activation ferritic steel was found to be proportional to the amount of helium implanted, regardless of the irradiation dose. Microstructure and hardness change were well correlated taking into account the TEM-invisible vacancy defect clustgers, whose concentration was estimated to increase proportional to square root of the fluence. Young' s modulus, as well as hardness, was shown to change by irradiation in SiO2.The present studies have contributed to improving the micro-indentation technique and enhancing understanding of ion irradiation-induced mechanical property change.

用微压痕法测定了重离子辐照材料的显微硬度。开发了利用加载-压痕深度曲线估计加载和卸载过程中薄面层硬度的分析程序，并应用于1。Ni离子辐照下氦共注入低钝化铁素体钢。用Cu离子和3辐照钽。用He或H离子辐照的sio2。低活化铁素体钢的硬度增加与氦注入量成正比，与辐照剂量无关。考虑到tem不可见的空位缺陷团簇，显微结构和硬度变化具有良好的相关性，其浓度估计与通量的平方根成正比。在SiO2中辐照后，杨氏模量和硬度发生了变化。本文的研究有助于改进微压痕技术，加深对离子辐照引起的力学性能变化的认识。

项目成果

室賀健夫: "Characterization of cascade induced defect production by microstructural analysis based on rate theory modeling" Journal of Nuclear Materials. 233-237.

Takeo Muroga：“基于速率理论模型的微观结构分析对级联缺陷诱导生产的表征”《核材料杂志》233-237。

加藤雄大: "The influence of helium-co-implantation on ion-irradiated Hardening of low activation ferritic steel"Journal of Nuclear Materials. 271&272. 115-119 (1999)

Yudai Kato：“氦共注入对低活化铁素体钢离子辐照硬化的影响”核材料杂志 271&272 (1999)。

Y. Katoh: "The influence of helium-co-im;lantation on ion-irradiated hardening of low-activation ferritic steel"Jowrnal of Nuclear Materials. vol.2718272. 115-119 (1998)

Y. Katoh：“氦共注入对低活化铁素体钢离子辐照硬化的影响”《核材料杂志》。

N. Inoue: "Correlation of microstructure and hardness of a low actovatuon ferritic steel"Journal of Nuclear Materials. vol. 258-263. 1248-1252 (1998)

N. Inoue：“低激励铁素体钢的微观结构和硬度的相关性”核材料杂志。

加藤雄大: "Dislocation evolution in a model and a candidate ferritic alloy during steady and varying temperature electron irradiations" Journal of Nuclear Materials. 233-237. 1029-1034 (1996)

Yudai Kato：“稳定和变化温度电子辐照过程中模型和候选铁素体合金的位错演化”《核材料杂志》233-237（1996）。