Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)
- 2006.09b
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- Pages.978-979
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- 2006
Densification and Conolidation of Powders by Equal Channel Angular Pressing
- Yoon, Seung-Chae (Department of Metallurgical Engineering, Chungnam National University) ;
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Hong, Sun-Ig
(Department of Metallurgical Engineering, Chungnam National University)
;
- Hong, Sun-Hyung (Korea Advanced Institute of Science and Technology) ;
- Kim, Hyoung-Seop (Department of Metallurgical Engineering, Chungnam National University)
- Published : 2006.09.24
Abstract
In this study, bottom-up type powder processing and top-down type SPD (severe plastic deformation) approaches were combined in order to achieve both full density and grain refinement of metallic powders with least grain growth. ECAP (Equal channel angular pressing) was used for the powder consolidation. We investigated the consolidation, plastic deformation and microstructure evolution behavior of the metallic powders during ECAP using an experimental method. It was found that high mechanical strength could be achieved effectively as a result of the well bonded powder contact surface during ECAP process of gas atomized Al-Si powders.
Keywords