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Ozaki Yukiko,Alessandri Elena,Uenosono Satoshi,Takamiya Tsuguyuki,Shigeru Takano 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
We investigated the mechanism how the high green density can be provided during die lubricated warm compaction (WD). We observed and analyzed the densification processes of iron powders including different contents of an inner lubricant, and measured the lateral pressure at the die wall during WD in comparison with conventional compaction and warm compaction. As a result, the high density in WD was due to not only the particles-deformation enhanced by warming powders but also the particles-rearrangement promoted by reducing an amount of the inner lubricant rather than the die lubrication.