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http://dx.doi.org/10.3795/KSME-A.2009.33.7.673

Reduction of Grain Growth for Al6061 Alloy by the Die Cooling System in Hot Extrusion Process  

Ko, Dae-Hoon (부산대학교 대학원 첨단정밀공학)
Lee, Sang-Ho (부산대학교 대학원 정밀가공시스템)
Ko, Dae-Cheol (부산대학교 ILIC)
Kim, Ho-Kwan (중소기업청)
Kim, Byung-Min (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.33, no.7, 2009 , pp. 673-680 More about this Journal
Abstract
In this study, die cooling system using the nitrogen gas has been applied to hot aluminum extrusion process for refining grains and reducing of grain growth. Computational fluid dynamics(CFD) has been carried out to evaluate die cooling effect by nitrogen gas, and the results of CFD have been used to FE-simulation for the prediction of the extrudate temperature in hot extrusion process. Experimental hot extrusion has been performed to observe microstructure and to measure temperature of extrudate. The results of FE-Simulation have been good agreement with those of experiment. Finally, process condition of hot extrusion can be established to reduce grain growth of Al6061 through the experiment.
Keywords
Microstructure Evolution; Grain Growth; Die Cooling System; Aluminum Hot Extrusion; Computational Fluid Dynamics(CFD); FE-Simulation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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