Volume 32 Issue 2
Jan 2018
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SANG Shengjun, GUO Haozhe, LI Bin, WANG Yongxu, WANG Zhiping, XIE Lifeng. Influence of Detonation Velocity on Sintering Performance of Nano-Aluminum Powders[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 023401. doi: 10.11858/gywlxb.20170581
Citation: SANG Shengjun, GUO Haozhe, LI Bin, WANG Yongxu, WANG Zhiping, XIE Lifeng. Influence of Detonation Velocity on Sintering Performance of Nano-Aluminum Powders[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 023401. doi: 10.11858/gywlxb.20170581

Influence of Detonation Velocity on Sintering Performance of Nano-Aluminum Powders

doi: 10.11858/gywlxb.20170581
  • Received Date: 15 May 2017
  • Rev Recd Date: 21 May 2017
  • An aluminum bar with a dense degree of over 98% was fabricated using nano-aluminum powders in an improved sintering device capable of pressure relief to study the sintering molding of nanometer metal powders.First, the performance of the sintering aluminum bar at different detonation velocities were obtained by adjusting the ratio of the ammonium nitrate explosive to the wood powder.Then the microstructures of the aluminum bars were observed using metallurgical microscopy, and such mechanical properties as the density and hardness were measured.The results show that the Mach-hole can be reduced by reducing the detonation velocity.However, the excessively low detonation velocity decreases the mechanical properties such as the density and the hardness.Moreover, the sintering aluminum bar that is free from any Mach-hole, of higher hardness, higher dense degree and finer grain size can be fabricated from nano-aluminum powers whose detonation velocity reaches 2 158 m/s.

     

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