Kinematical Theory for Grain Motion during Superplastic Deformation
| Project/Area Number |
20560067
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
YASUDA Kouichi 東京工業大学, 大学院・理工学研究科, 准教授 (20191306)
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| Co-Investigator(Renkei-kenkyūsha) |
SHIOTA Tadashi 東京工業大学, 大学院・理工学研究科, 助教 (40343165)
OKAMOTO Taku 東京工業大学, 大学院・理工学研究科, 博士課程学生
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| Project Period (FY) |
2008 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 材料設計 / プロセス / 物性 / 評価 / セラミックス超塑性 / 超塑性 / 運動学 / ランダムウォーク / 確率過程 / 超塑性変形 / 統計解析 |
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| Research Abstract |
The displacement vectors of 748 grains of tetragonal zirconia ceramics were measured by electron microscopic observation of grain structure before and after superplastic deformation. Trajectory analysis showed that grains moved in zigzag way. So, the displacement vector was divided into the random walk vector and the drift vector calculated by finite element analysis Variances of random walk vectors for tensile direction and lateral direction had an inverse correlation at the beginning of superplastic deformation, however, these two variances became the almost same value with the deformation. The tendency was analyzed with Langevin equation.
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Report
(6 results)
Research Products
(34 results)
