| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2014: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2013: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2012: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
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| Outline of Final Research Achievements |
The mechanical properties of multiphase alloys are dominated by their microstructure. Therefore, to develop materials with superior mechanical properties, it is important to examine the mechanical properties of each microstructural constituent. However, the measurement of mechanical properties of each constituent is difficult because the size is on the order of microns. We have developed a testing machine that enables the measurement of mechanical properties and in-situ observation of deformation behavior of microsized materials. This testing machine is equipped with a white-light interferometer that can measure the surface profile of a microsized specimen with high precision. We have measured the mechanical properties of microsized specimens prepared from DP (Dual Phase) steels and Mg-Zn-Y alloys. As results, the deformation behavior and strain localization around precipitates were measured, and the occurrence of cracking at the interface boundary of two phases was clearly observed.
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