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Al-Cu-Sc合金シートにおける圧延パラメータが応力-ひずみ場と組織進化に及ぼす影響
Guoge Zhang1, Lijie Liu1, Tuo Li2
1State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Enginering Mechanics, Dalian University of Technology, Dalian 116023, China.
Materials (Basel, Switzerland)
|December 11, 2025
まとめ
アルミニウム-銅-スキャンジウム合金の圧延の最適化には、速度と送り速度が応力と組織にどのように影響するかを理解することが含まれます。この研究は、より良い材料特性を得るためのプロセス設計を導くために、FEM-VPSCフレームワークを組み合わせて使用します。
科学分野:
- 材料科学および工学;機械工学;計算材料科学
背景:
- アルミニウム-銅-スキャンジウム(Al-Cu-Sc)合金は航空宇宙用途に不可欠である。;圧延中の微細構造の制御は、所望の機械的特性を達成するための鍵である。;加工パラメータと材料応答の間の相互作用を理解することは不可欠である。
研究 の 目的:
- Al-Cu-Sc合金シートに対する圧延速度、送り速度、パススケジュールの影響を調査すること。;結果として生じる応力-ひずみ場、圧延力、組織進化を解析すること。;加工パラメータと微細構造の関係を確立すること。
主な方法:
- 有限要素法(FEM)と粘塑性自己整合(VPSC)を組み合わせたフレームワークを利用した。;シミュレーションは、電子後方散乱回折(EBSD)測定値に対して検証された。;巨視的な場と微視的な組織変化を結びつけることに焦点を当てた。
主要な成果:
- 圧延速度の増加は圧延力を低下させたが、表面-コア応力勾配とせん断組織成分を増強した。;高い送り速度は加工硬化と表面近傍の応力/ひずみ局在化を激化させた。;複数パススケジュールは変形を効果的に再分配し、応力集中を低減した。
結論:
- FEM-VPSCフレームワークの組み合わせは、プロセスガイダンスのための実験的傾向を正確に捉える。;圧延パラメータは、応力分布、組織進化、蓄積エネルギーに大きく影響する。;結果は、Al-Cu-Scシートの力、応力均一性、組織を最適化するための圧延経路を設計するための基礎を提供する。
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