| Project/Area Number |
23560106
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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 |
Materials/Mechanics of materials
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| Research Institution | Osaka Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 有限要素法 / マルチスケール解析 / プロセスメタラジー / 結晶成長 / アルミニウム合金 / 成形性 / 塑性加工 / 計算力学 / 結晶塑性 / 異周速圧延 / 熱処理 / 再結晶 / 材料組織制御 / 最適化 / マルチスケール / 集合組織発展 / 材料創製 / 材料設計 / シミュレーション工学 / 結晶粒界 / 均質化法 / ミスオリエンテーション理論 / 離散多目的最適化 / 並列計算 |
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| Research Abstract |
In this study, to improve formability of aluminum (Al) alloy sheet metal, micro-ploycrystal texture control and optimization of process conditions were performed. We develop a multi-scale finite element procedure based on misorientation theory, both plastic anisotropy of sheet metal by micro-crystal morphology and plastic deformation-induced micro-texture evolution were analyzed. In order to improve the Lankford value (r-value) with small planar anisotropy of sheet metal, parameters of 2-path rolling processes were optimized. As the results, it was confirmed that the optimum texture has 1.6 times higher r-value and 1.78 times lower planar anisotropy compared with conventional A6022-T43 sheet metal. In the bendability and springback property of Al sheet metal, parameters of asymmetric rolling ratio and heat annealing time were optimized.
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