Development of an industrial evaluation technique for vacancy behavior using muon spin relaxation method
| Project/Area Number |
25289260
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Partial Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Material processing/Microstructural control engineering
|
|---|
| Research Institution | University of Toyama |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
MATSUDA Kenji 富山大学, 大学院理工学研究部, 教授 (00209553)
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
|
|---|
| Keywords | 金属生産工学 / アルミニウム合金 / 原子空孔 / ミュオン / スピン緩和 / クラスター / 電子密度計算 / 電子湿度計算 / 「国際情報交換」ノルウェイ / 「国際情報交換」連合王国 / 「国際情報交換」ノルウエイ |
|---|
| Outline of Final Research Achievements |
Zero field muon spin relaxation experiments were carried out for Al-Mg-Si, Al-0.5%Mg and Al-0.5%Si alloys under various heat treatments, which have demonstrated that the muon trapping rates (νt) depended on the heat treatment on the sample and solute concentrations: (1) the concentration of dissolved Mg dominates the νt values at lower temperatures below 120 K; (2) the νt values around 200 K reflect a number of clusters; (3) the vacancy trapping is obvious around room temperature; (4) the natural aging effect is clearly observed with Al-0.5%Si. The isothermal time dependence of spin relaxation rates with the sample of Al-1.6%Mg2Si at 280, 290 and 300K showed that the spin relaxation rates at 280 K did not change for the first about 100 minutes after the solution heat treatment and quenching, then decreased with time in the logarithmic scale. Those at 290 and 300 K decreased with time from the beginning. Thus, muons clearly monitored kinetic behavior of vacancies.
|
Report
(4 results)
Research Products
(24 results)
-
-
-
-
-
-
-
-
[Journal Article] muSR study of Al-0.67%Mg-0.77%Si alloys2014
Author(s)
K Nishimura, K Matsuda, R Komaki, N Nunomura, S Wenner, R Holmestad, T Matsuzaki, I Watanabe, F L Pratt and C D Marioara
-
Journal Title
Journal of Physics
Volume: 551
Pages: 012031-012031
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] muSR study of Al-0.67%Mg-0.77%Si alloys2014
Author(s)
K Nishimura, K Matsuda, R Komaki, N Nunomura, S Wenner, R Holmestad, T Matsuzaki, I Watanabe, F L Pratt, C D Marioara
Organizer
The 13th International Conference on Muon Spin Rotation, Relaxation and Resonance
Place of Presentation
Grindelwald, Switzerland
Related Report
-
