Stability evaluation of point defect clusters to estimate microstructural change during irradiation

点缺陷簇的稳定性评估以估计辐照期间微观结构的变化

• 批准号: 20560622
• 负责人: JITSUKAWA Shiro
• 金额: $ 2.08万
• 依托单位: Japan Atomic Energy Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560622/
• 关键词: 格子欠陥; 電子顕微鏡; 照射損傷; 点欠陥クラスター; 微細組織; 金属物理; モデル化; 点欠陥クラスタ; 照射効果; マルチスケールモデル; 中性子照射; 原子炉材料; 原子力エネルギー

Capture radius of interstitial loops for point defect clusters have been evaluated by in situ ion-irradiation experiment and model calculation. Relatively large capture radius for clusters was obtained. Also, the minimum size for dislocation loop exhibiting strain field has been detected, The value is of about 1nm. By using minimum size of interstitial loops and using capture radius for clusters fate and the stability of point defect clusters has been evaluated. The results are useful to control irradiation damage.

通过原位离子辐照实验和模型计算，估算了点缺陷团簇间隙环的俘获半径。得到了较大的捕获半径。同时还发现了位错环的最小尺寸，约为1nm。利用最小间隙环尺寸和俘获半径对点缺陷团簇的命运和稳定性进行了评价。研究结果对控制辐照损伤有一定的参考价值。

项目成果

Irradiation effects on reduced activation ferritic/martensitic steels-tensile, impact, fatigue properties and moldeling

辐照对降低活化铁素体/马氏体钢的拉伸、冲击、疲劳性能和成型性能的影响

• 发表时间: 2009
• 期刊: Nuclear Fusion 49
• 作者: S.jitsukawa;K.Suzuki;N.Okubo;M.Ando;K.Shiba
• 通讯作者: K.Shiba

Preliminary models on irradiation induced changes of microstructure and stress-strain relations to estimate mechanical response of austenitic and martensitic steel components

辐照引起的微观结构和应力-应变关系变化的初步模型，用于估计奥氏体和马氏体钢部件的机械响应

• 发表时间: 2011
• 作者: S.Jitsukawa;Y.Abe;K.Suzuki;N.Okubo
• 通讯作者: N.Okubo

Intensely irradiated steel components : Plastic and fracture properties, and a new concept of structural design criteria for assuring the structural integrity

强辐照钢部件：塑性和断裂性能，以及确保结构完整性的结构设计标准的新概念

• 发表时间: 2010
• 期刊: Nuclear Engineering and Design 240
• 作者: K.Suzuki;S.Jitsukawa;N.Okubo;F.Takada
• 通讯作者: F.Takada

Irradiation effects on reduced activation ferritic/martensitic steels-Mechanical properties and modeling-

辐照对降低活化铁素体/马氏体钢的影响-机械性能和建模-

• 发表时间: 2008
• 作者: Shiro Jitsukawa;et al.
• 通讯作者: et al.

Lowest energy structures of self-interstitial atom clusters in alpha-iron from a combination of Langevin molecular dynamics and the basin-hopping technique

结合朗之万分子动力学和盆地跳跃技术得出α-铁中自填隙原子簇的最低能量结构

• 发表时间: 2009
• 期刊: Philosophical Magazine 89
• 作者: Y.Abe;S.Jitsukawa
• 通讯作者: S.Jitsukawa