Microstructure and Impact Toughness of GH4169 Samples Fabricated by Selective Laser Melting

Shuai Huang; Shaoqing Guo; Guohui Zhang; Biao Zhou; Taiqi Yan; Bingqing Chen; Xuejun Zhang

doi:10.3788/LOP57.051405

Laser & Optoelectronics Progress, Volume. 57, Issue 5, 051405(2020)

Microstructure and Impact Toughness of GH4169 Samples Fabricated by Selective Laser Melting

Shuai Huang^*, Shaoqing Guo, Guohui Zhang, Biao Zhou, Taiqi Yan, Bingqing Chen, and Xuejun Zhang

3D Printing Research and Engineering Technology Center, Beijing Institute of Aeronautical Materials, Aero Engine Corporation of China, Beijing 100095, China

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Figures & Tables(8)

Fig. 1. Powder morphology of GH4169

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Fig. 2. U-shaped impact specimen size with picture number of M2504-S038

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Fig. 3. Processed samples

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Fig. 4. Microstructure of GH4169 samples with different parameters

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Fig. 5. Impact toughness at room temperature with different process parameters

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Fig. 6. Fracture morphology of GH4169 impact toughness samples under different process parameters

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Table 1. Chemical composition of GH4169 powder
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Table 1. Chemical composition of GH4169 powder
Element C Cr Ni Co Mo Al Ti Nb Fe
Mass fraction /% 0.043 18.70 52.76 <0.1 3.04 0.51 1.00 5.34 Bal.

Table 2. Parameters in the selective laser melting test
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Table 2. Parameters in the selective laser melting test
Set No. Power /W Scanning speed /(m·s^-1)
1 260 0.9
2 290 1.2
3 350 1.5

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Shuai Huang, Shaoqing Guo, Guohui Zhang, Biao Zhou, Taiqi Yan, Bingqing Chen, Xuejun Zhang. Microstructure and Impact Toughness of GH4169 Samples Fabricated by Selective Laser Melting[J]. Laser & Optoelectronics Progress, 2020, 57(5): 051405

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