• Laser & Optoelectronics Progress
  • Vol. 55, Issue 1, 11413 (2018)
Sun Rujian, Zhu Ying, Li Liuhe, Guo Wei*, and Peng Peng
Author Affiliations
  • School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
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    DOI: 10.3788/LOP55.011413 Cite this Article Set citation alerts
    Sun Rujian, Zhu Ying, Li Liuhe, Guo Wei, Peng Peng. Effect of Laser Shock Peening on Microstructure and Residual Stress of Wire-Arc Additive Manufactured 2319 Aluminum Alloy[J]. Laser & Optoelectronics Progress, 2018, 55(1): 11413 Copy Citation Text show less
    (a) Schematic of WAAM; (b) specimen by WAAM
    Fig. 1. (a) Schematic of WAAM; (b) specimen by WAAM
    LSP experiment. (a) Impact path; (b) specimen after LSP
    Fig. 2. LSP experiment. (a) Impact path; (b) specimen after LSP
    Microstructures of grains. (a) Before LSP; (b) after LSP
    Fig. 3. Microstructures of grains. (a) Before LSP; (b) after LSP
    Analysis results by grain size software. (a) Grain size; (b) grain size distribution before LSP; (c) grain size distribution after LSP
    Fig. 4. Analysis results by grain size software. (a) Grain size; (b) grain size distribution before LSP; (c) grain size distribution after LSP
    TEM images of 2319 aluminum alloys by WAAM. (a) Before LSP; (b) after LSP
    Fig. 5. TEM images of 2319 aluminum alloys by WAAM. (a) Before LSP; (b) after LSP
    Microhardness of 2319 aluminum alloys by WAAM
    Fig. 6. Microhardness of 2319 aluminum alloys by WAAM
    Residual stress in depth direction of 2319 aluminum alloys by WAAM
    Fig. 7. Residual stress in depth direction of 2319 aluminum alloys by WAAM
    MaterialCuMnZrSiMgZnTiAl
    2A12 substrate3.9-4.80.3-0.9≤0.3≤0.51.2-1.8≤0.3≤0.15Bal.
    2319 welding wire5.960.30.120.04-0.10.17Bal.
    Table 1. Main chemical compositions of 2A12 substrate and 2319 welding wire (mass fraction, %)
    ParameterWeldertypeTungstenelectrodediameter /mmWirediameter /mmWire feedingspeed /(m·min-1)ShieldinggasFlow rate ofshielding gas /(L·min-1)Travel speed /(m·min-1)
    ContentTungsten inertgas welding31.21.5Ar150.3
    Table 2. Process parameters of WAAM
    Sun Rujian, Zhu Ying, Li Liuhe, Guo Wei, Peng Peng. Effect of Laser Shock Peening on Microstructure and Residual Stress of Wire-Arc Additive Manufactured 2319 Aluminum Alloy[J]. Laser & Optoelectronics Progress, 2018, 55(1): 11413
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