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KAKEN_17K14574seika.pdf
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Download
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:789.1 KB
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| Last updated |
:Oct 31, 2019 |
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Total downloads since Oct 31, 2019 : 448
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溶融金属流動の粒子法解析に基づく指向性ポーラス堆積法の開発
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| Kana |
ヨウユウ キンゾク リュウドウ ノ リュウシホウ カイセキ ニ モトズク シコウセイ ポーラス タイセキホウ ノ カイハツ
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Yōyū kinzoku ryūdō no ryūshihō kaiseki ni motozuku shikōsei pōrasu taisekihō no kaihatsu
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Development of direct deposition for porous structure based on molten-metal dynamics analysis with particle method
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小池, 綾
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コイケ, リョウ
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Koike, Ryō
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慶應義塾大学・理工学部 (矢上)・助教
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Research team head
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科研費研究者番号 : 70781417
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2019
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科学研究費補助金研究成果報告書
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2018
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金属材料に適用可能な3Dプリンタの一方式として指向性エネルギ堆積法 (DED) が利用される．DEDはレーザなどにより母材に形成したメルトプールへ向けて材料粉末を供給することで積層を繰り返すプロセスだが，微細形状の造形が困難であり，機能性構造の作製にDEDを応用する例は少ない．本研究は，DEDにおいて軽量，高比剛性，振動減衰性に優れるポーラス金属を造形することを目指し，溶融中の材料に水素化チタンを発泡剤として添加する新プロセスを提案した．提案手法はステンレス鋼などのポーラス化が困難な材料であっても50%以上の低密度化に成功するなど，有用な成果を得た．
Directed energy deposition (DED) is known as an additive manufacturing process applicable to metals. DED is a process to fabricate a part by irradiating laser beam to form molten pool on a baseplate and supplying material powder at the same time, and hardly used for functional structure fabrication because of its low shape accuracy. In this study, a novel process applying titanium hydride is proposed to fabricate a foam metal which is a light-weight, high-strength and high-damping material. The experimental results show that the proposed method can produce foam metal with high porosity ratio more than 50% even when a stainless alloy is used which is difficult to foam.
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研究種目 : 若手研究(B)
研究期間 : 2017～2018
課題番号 : 17K14574
研究分野 : 生産工学
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