Recrystallization phenomenon in laser assisted incremental sheet metal forming
| Project/Area Number |
16K06008
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Production engineering/Processing studies
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| Research Institution | Shizuoka University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | インクリメンタルフォーミング / レーザ / 強加工 / インクリメンタルフォーミン / 微細結晶粒 / 板成形 / レーザ援用成形 / 結晶粒微細化 / 材料加工 |
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| Outline of Final Research Achievements |
In this research, we have fundamentally studied "CNC control of material structure (grain refinement etc.)" by "repetitive large strain introduction" which is the feature of incremental forming and "local heating" by laser combination. In particular, “strong processing (by incremental forming)” and “(laser assisted) dynamic recrystallization” are both powerful means of grain refinement, and the effects of various conditions on the refinement are investigated. Furthermore, a large strain was introduced into the material using a multi-step process to achieve grain refinement of around 1 μm.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では，インクリメンタル成形の特徴である「繰返し大ひずみ導入」とレーザ併用による「局所加熱」により，「材料組織（結晶粒微細化等）のＣＮＣ制御」に関する基礎的検討を行っており，各種条件が結晶粒微細化に及ぼす影響を調べている．さらに，マルチステップ・プロセスを用いてより大きなひずみを材料に導入して，1μm程度の結晶粒微細化を達成した．
本研究の成果により製品上の総ひずみ量を制御して，それによる微細結晶粒分布を制御でき，製品上の組織分布を設計することができる．今後，生体適合性のよい純チタンに対してもこれを適切して高精度に制御できれば，新しい医療補綴物などの開発が可能となる．
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Report
(4 results)
Research Products
(6 results)
