• Chinese Journal of Lasers
  • Vol. 49, Issue 22, 2202012 (2022)
Peng Ni, Huixia Liu*, Zhen Dong, Youjuan Ma, and Xiao Wang
Author Affiliations
  • School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
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    DOI: 10.3788/CJL202249.2202012 Cite this Article Set citation alerts
    Peng Ni, Huixia Liu, Zhen Dong, Youjuan Ma, Xiao Wang. Experimental Study on Dynamic Compaction of Copper Powder by Laser Shock Wave[J]. Chinese Journal of Lasers, 2022, 49(22): 2202012 Copy Citation Text show less
    Schematic of laser shock dynamic compaction
    Fig. 1. Schematic of laser shock dynamic compaction
    Scanning electron microscopy (SEM) images of different forms of copper powder. (a) Irregular copper powder;(b)(c) spherical copper powder with different diameters
    Fig. 2. Scanning electron microscopy (SEM) images of different forms of copper powder. (a) Irregular copper powder;(b)(c) spherical copper powder with different diameters
    Drawing of pretreated and final copper powder compacts. (a) Macro morphologies; (b) enlarged local morphologies
    Fig. 3. Drawing of pretreated and final copper powder compacts. (a) Macro morphologies; (b) enlarged local morphologies
    Cross-section morphologies of copper powder compact under different laser energy values. (a) Edge area; (b) central area
    Fig. 4. Cross-section morphologies of copper powder compact under different laser energy values. (a) Edge area; (b) central area
    Effect of laser energy on relative density of copper powder compact
    Fig. 5. Effect of laser energy on relative density of copper powder compact
    Macro morphologies of compacts of copper powder with different forms . (a) Irregular copper powder; (b) small spherical copper powder; (c) large spherical copper powder
    Fig. 6. Macro morphologies of compacts of copper powder with different forms . (a) Irregular copper powder; (b) small spherical copper powder; (c) large spherical copper powder
    Microstructures of cross-section of different compacts. (a)(d) Irregular copper powder compact; (b)(e) small spherical copper powder compact; (c)(f) large spherical copper powder compact
    Fig. 7. Microstructures of cross-section of different compacts. (a)(d) Irregular copper powder compact; (b)(e) small spherical copper powder compact; (c)(f) large spherical copper powder compact
    Effect of copper powder form on relative density of compacts
    Fig. 8. Effect of copper powder form on relative density of compacts
    Microhardness distribution of irregular copper powder compact under different laser energy values
    Fig. 9. Microhardness distribution of irregular copper powder compact under different laser energy values
    Effect of multiple impact on copper powder compact. (a) Effect of impact frequency on relative density; (b) effect of the second impact energy on relative density (keep the first impact energy at 360 mJ); (c) effect of the first impact energy on relative density (keep the second impact energy at 1800 mJ)
    Fig. 10. Effect of multiple impact on copper powder compact. (a) Effect of impact frequency on relative density; (b) effect of the second impact energy on relative density (keep the first impact energy at 360 mJ); (c) effect of the first impact energy on relative density (keep the second impact energy at 1800 mJ)
    Powder typeDiameter /μmPurity grade
    Irregular copper powder15-203N
    Spherical copper powder0.5-2.03N
    Spherical copper powder10-203N
    Table 1. Parameters of copper powder
    Peng Ni, Huixia Liu, Zhen Dong, Youjuan Ma, Xiao Wang. Experimental Study on Dynamic Compaction of Copper Powder by Laser Shock Wave[J]. Chinese Journal of Lasers, 2022, 49(22): 2202012
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