【公開日：2025.07.07】【最終更新日：2025.07.04】
課題データ / Project Data
課題番号 / Project Issue Number
22NI0201
利用課題名 / Title
Characterization of metal alloy surfaces
利用した実施機関 / Support Institute
名古屋工業大学 / Nagoya Tech.
機関外・機関内の利用 / External or Internal Use
外部利用/External Use
技術領域 / Technology Area
【横断技術領域 / Cross-Technology Area】（主 / Main）物質・材料合成プロセス/Molecule & Material Synthesis（副 / Sub）計測・分析/Advanced Characterization
【重要技術領域 / Important Technology Area】（主 / Main）マテリアルの高度循環のための技術/Advanced materials recycling technologies（副 / Sub）高度なデバイス機能の発現を可能とするマテリアル/Materials allowing high-level device functions to be performed
キーワード / Keywords
Aluminum-based alloys, Scanning transmission electron microscopy,電子顕微鏡/Electron microscopy,電子回折/Electron diffraction,高品質プロセス材料/ High quality process materials,易循環型材料設計技術/ Recycling-friendly material design technology
利用者と利用形態 / User and Support Type
利用者名（課題申請者）/ User Name (Project Applicant)
Muhammad Hafiz Jahare
所属名 / Affiliation
Universiti Teknologi Malaysia (UTM)
共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes
ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes
Masaki Tanemura
利用形態 / Support Type
（主 / Main）共同研究/Joint Research（副 / Sub）-
利用した主な設備 / Equipment Used in This Project
報告書データ / Report
概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)
Semisolid forging process was performed on A380 aluminium alloy. Cross‐sectional SEM and EBSD observations were carried out on the surface of the alloy to observe any modification on the grain size.
実験 / Experimental
Semisolid forged A380 aluminium specimen was prepared for metallurgical analysis. The specimen was grinded using silicon carbide grinding paper of multiple grit (200, 400, 800, 1200, 2400, and 4000) before cleaned and air dried. Subsequently, the specimen was polished using polishing cloth with alumina suspension until mirror-finish. Metallurgical analysis include SEM and SEM-EBSD was performed on the specimen accordingly. The test was done based on the initially identified crystallographic plane of the phases within the aluminium specimen using XRD test. The raw file of the SEM and EBSD was then analyzed and extracted using Matlab software to generate the required images.
結果と考察 / Results and Discussion
The semisolid forging process offers the capability to refine the microstructure of A380 aluminium alloy. The refinement include the secondary dendrite arm spacing (SDAS), eutectic phases, and grain size. Fig.1 shows the characteristic of the grain size at the middle and at the edge of the specimen analyzed using SEM-EBSD. The result dictates that the grain size are considerably finer at the center of the specimen compared to the edge of the specimen near the cavity wall. It can be deduced that the area adjacent to the cavity wall is the last-to-solidify region during the solidification process of A380 aluminium using semisolid forging process. Therefore, the result provides a visual information of the melt solidification flow during semisolid forging process.
図・表・数式 / Figures, Tables and Equations
Fig.1 SEM-EBSD image showing the grain size of A380 alloy at two different area
その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)
成果発表・成果利用 / Publication and Patents
論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)
口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.
特許 / Patents
特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件