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Analysis Of Density And Mechanical Properties Of High Velocity Compacted Iron Powder

Jianzhong Wang, Haiqing Yin, Xuanhui Qu
Published 2009 · Materials Science
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A new method for producing higher density PM parts, high velocity compaction (HVC), was presented in the paper. Using water atomized pure iron powder without lubricant admixed as the staring material, ring samples were compacted by the technique. Scanning electron microscopy (SEM) and a computer controlled universal testing machine were used to investigate the morphologies and the mechanical properties of samples, respectively. The relationships among the impact velocity, the green density, the sintered density, the bending strength and the tensile strength were discussed. The results show that with increasing impact velocity, the green density and the bending strength increase gradually, so the sintered density does. In addition, the tensile strength of sintered material is improved continuously with the sintered density enhancing. In the study, the sintered density of 7.545 g/cm 3 and the tensile strength of 190 MPa are achieved at the optimal impact velocity of 9.8 m/s.
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