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유한요소해석을 이용한 AA1100의 다축 단조와 다축대각 단조의 비교
정효태,김민성,권상철,김순태,이성,최시훈 대한금속·재료학회 2019 대한금속·재료학회지 Vol.57 No.1
The effect that forging routes (3 routes, A-C) exert on the development of deformation heterogeneity in AA1100 was theoretically performed using finite element analysis. Route A corresponded to a forging process that involved from 1 to 6 passes through multi-axial diagonal forging (MADF); Route B corresponded to a forging process that involved from 1 to 12 passes through the MADF; and, Route C corresponded to a conventional multi-axial forging process in which the operations from 1 to 6 passes of the MADF were simply repeated twice. From the aspect of strain uniformity developed on AA1100, Route B, which combined forging operations to the direction perpendicular to the face of the workpiece and forging operations to the diagonal direction of the face of the workpiece, was relatively advantageous compared with Routes A and C that only involved forging operations to the direction perpendicular to the face of the workpiece. Routes A and C showed a tendency toward regions where both the low and the high effective strains were restricted to specific regions of the workpiece. The low and high effective strains created by Route B, on the other hand, tended to be distributed over various regions of the workpiece.