| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2013: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
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| Outline of Final Research Achievements |
I have sought to design multifunctional Mg alloys with synchronized LPSO phase, using heterogeneity integration method that considers geometrical and electrochemical viewpoints. The microstructure of extruded Mg/LPSO two-phase alloys is characterized by a multimodal microstructure; fine DRXed alpha-Mg grains with random orientation and coarse alpha-Mg grains with strong fiber-texture. The LPSO phase grains also develop string fiber texture. While the fine DRXed region contributes to the improvement in ductility, the coarse grains and LPSO phase contribute to its increased mechanical strength. From the viewpoint of corrosion science, the LPSO phase may be considered as a secondary phase causing a potential difference between phases. Controlling the Volta potential through chemical composition design of the LPSO phase is effective for reducing the potential difference. Al addition to the Mg/LPSO two-phase alloy is effective for reduction of potential difference.
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