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Improvement of a high velocity compaction technique for iron powder

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

Water atomized pure iron powder was compacted by high velocity compaction (HVC) with and without upper relaxation assist (URA) device. The influence of URA device on green density, spring back, green strength and hardness was studied. Morphological characteristics of the samples were observed by scanning electron microscope (SEM). Green strength of the samples was measured by computer controlled universal testing machine. The results show that as stroke length increases, the green density, green strength and hardness of the compacts increase gradually. At the identical stroke length, the green density of the compacts pressed with URA devise was 2% higher than the compacts pressed without URA device. The green strength and hardness of the compacts pressed with URA device were higher than the compacts pressed without URA device. Furthermore, the radial spring back of the compacts decreased gradually with the increment in stroke length, whilst that of compacts prepared with URA device was lower.

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Authors and Affiliations

  1. Laboratory of Particulate and Powder Metallurgy, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Dil Faraz Khan, Haiqing Yin, Xianjie Yuan, Wenhao Wang & Xuanhui Qu

  2. Research Centre of Materials Science, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China

    Zahid Usman

  3. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Matiullah Khan

  4. Department of Physics, University of Science and Technology Bannu, Bannu, 28100, Pakistan

    Dil Faraz Khan & Matiullah Khan

Authors
  1. Dil Faraz Khan
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  2. Haiqing Yin
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  3. Zahid Usman
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  4. Matiullah Khan
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  5. Xianjie Yuan
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  6. Wenhao Wang
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  7. Xuanhui Qu
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Correspondence to Haiqing Yin.

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Khan, D.F., Yin, H., Usman, Z. et al. Improvement of a high velocity compaction technique for iron powder. ACTA METALL SIN 26, 399–403 (2013). https://doi.org/10.1007/s40195-012-0147-8

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  • DOI: https://doi.org/10.1007/s40195-012-0147-8

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