| Co-Investigator(Kenkyū-buntansha) |
川上 博士 三重大学, 工学(系)研究科(研究院), 准教授 (00252338)
片山 聖二 大阪大学, 接合科学研究所, 教授 (10144528)
西本 浩司 阿南工業高等専門学校, その他部局等, 准教授 (40501169)
村川 英一 大阪大学, 接合科学研究所, 教授 (60166270)
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| Budget Amount *help |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2014: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
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| Outline of Final Research Achievements |
It is necessary to simultaneously reduce weight and enhance functionality of materials in low carbon society. Porous metals are one of promising materials. In this research, we conduct a fundamental research to create a microporous metal in the world by controls of the vacancies (porosity: welding defect) formed in the laser-irradiated weld metal. Therefore, we clarified the porosity formation process based on the world's first high-intensity X-ray transmission three-dimensional observation under various laser welding conditions for titanium, steel including stainless steel and aluminum alloy. We numerically analyze formation of a keyhole which causes porosity by fluid analysis particle method suitable for phase transformation and large deformation. Moreover, we control porosity formation at the laser-irradiated unit for creation of in-situ-local microporous metal.
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