| Project/Area Number |
22760078
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Kobe University |
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Principal Investigator |
SHIOZAWA Daiki 神戸大学, 大学院・工学研究科, 助教 (60379336)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 機械材料・材料力学 / 非破壊検査 / 放射光 CT / 材料力学 / 疲労 / 材料強度 / 放射光 / CTイメージング / 結晶組織観察 / 疲労き裂 / 回折 |
|---|
| Research Abstract |
The three dimensional grain mapping technique for polycrystalline material, that is termed X-ray diffraction contrast tomography (DCT) has proposed. In the present study, the measurements of DCT were conducted in SPring-8 and the condition of measurement and data procedure were discussed. Developed technique was applied to aluminum alloy and stainless steel. It was found that the shape and location of grain can be determined by three-dimensional mapping technique using the apparatus in SPring-8, BL19B2 bending beam line. Next, for evaluation of plastic deformation, the internal grain orientation spread of the individual grain was counted. The grain orientation spread is caused by the mosaicity, which related to the change of microstructure. The grain orientation spread increased with increasing in the tension stress in the plastic deformation region and cyclic loading. It is possible to evaluate fatigue damage in microstructure, such as crack initiation and creep damage, by the DCT technique and using the grain orientation spread as one of the fatigue damage parameters
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