Recovery of mechanical property in low-activation vanadium alloys in post-irradiation heat treatment

低活化钒合金辐照后热处理力学性能的恢复

• 批准号: 20560763
• 负责人: FUKUMOTO Kenichi
• 金额: $ 1.91万
• 依托单位: University of Fukui
• 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-20560763/
• 关键词: 低放射化バナジウム合金; 照射脆性; 熱回復; 補修技術; 原子力・エネルギー; 格子欠陥; 回復; 照射脆化

In order to improve the irradiation embrittlement of low activation-induced V-4Cr-4Ti alloy after neutron irradiation below 300C, a research for post-irradiation heat treatment for neutron-irradiated vanadium alloys was conducted. It was found that an anneal treatment at 500C for 10 to 20 hours in a vacuum was required tomake the ductility of irradiated vanadium alloys recovered in tensile test after the anneal treatment. The recovery of ductile behavior in irradiated vanadium alloys is caused by the transition of deformation mode from rapid local necking deformation to uniform deformation due to the reduction of barrier strength factor for defect clusters. It was considered that the reduction of barrier strength factor for defect clusters against dislocation motion during deformation was brought by desorption of interstitial gas impurities from defect clusters after anneal treatment as the interstitial impurities had been absorbed in dislocation core in the as-irradiated ones.

为了改善低激活诱导的V-4CR-4TI合金的辐射，中子辐照到300C以下时，进行了对中子辐照式钒合金的辐射后热处理的研究。发现需要在500°C的500℃下进行真空治疗10至20小时，从而在退火处理后在拉伸试验中回收的辐照式钒合金的延展性。辐照钒合金中延性行为的恢复是由于变形模式从快速局部颈部变形到均匀变形的过渡引起的，这是由于缺陷簇的屏障强度因子的降低而导致的。据认为，通过在退火处理后从缺陷簇中解吸了障碍簇的屏障强度因子，以抗变形过程中的脱位簇，因为间质杂质在AS-IRRADADIDIAD的脱位中吸收了脱位核心。

项目成果

低放射化バナジウム合金の低温熱時効による塑性回復の研究

低活化钒合金低温热时效塑性恢复研究

• 发表时间: 2011
• 作者: 岩崎将大;福元謙一;徐虫L、
• 通讯作者: 徐虫L、

Precipitation behavior on mechanical property change for thermal aging heat treatment in V-Cr-Ti alloys

V-Cr-Ti合金热时效热处理析出行为对力学性能变化的影响

• 发表时间: 2009
• 作者: Y.Kuroyanagi;K.Fukumoto
• 通讯作者: K.Fukumoto

低温中性子照射したバナジウム合金の高温引張試験におけるセレーション挙動

低温中子辐照钒合金高温拉伸试验中的锯齿行为

• 发表时间: 2010
• 作者: 岩崎将大;福元謙一;山崎正徳;鳴井実;徐虫L
• 通讯作者: 徐虫L

常陽炉重照射バナジウム合金の機械的特性と損傷組織の相関性

卓越反应堆强辐照钒合金力学性能与损伤组织的相关性

• 发表时间: 2009
• 作者: S.Inagaki;他10名;福元謙一
• 通讯作者: 福元謙一