Research Status of Defects and Defect Treatment Technology for Laser Additive Manufactured Products

Yansheng Yao; Jun Wang; Qingbo Chen; Chen Ding; Jianping Tang; Zhangsen Ge

doi:10.3788/LOP56.100004

Laser & Optoelectronics Progress, Volume. 56, Issue 10, 100004(2019)

Research Status of Defects and Defect Treatment Technology for Laser Additive Manufactured Products

Yansheng Yao^1、*, Jun Wang^1,2, Qingbo Chen¹, Chen Ding¹, Jianping Tang¹, and Zhangsen Ge¹

Author Affiliations

¹ School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei, Anhui 230601, China

² Anhui Chungu 3D Printing Institute of Intelligent Equipment and Industrial Technology, Wuhu, Anhui 241000, China

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Figures & Tables(7)

Fig. 1. Flow chart of numerical simulation

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Fig. 2. Growth mechanism of cracks

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Fig. 3. Microstructural morphologies of 316L-nHA composites polished and corroded at different scanning velocities. (a) 316L SS, 250 mm·s-1; (b) 316L-5nHA, 250 mm·s-1; (c) 316L-10nHA, 250 mm·s-1; (d) 316L-5nHA, 300 mm·s-1; (e) 316L-5nHA, 400 mm·s-1; (f) 316L-10nHA, 350 mm·s-1

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Fig. 4. Morphology after spheroidization

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Fig. 5. Pore morphology

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Fig. 6. Porosity of IN718 (SLM) after HIP processing at different temperatures and pressures[96]

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Table 1. Mechanical properties of titanium alloy TC4
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Table 1. Mechanical properties of titanium alloy TC4
Material Condition σ_b/MPa σ_0.2/MPa A/%
TC4 Forging 895 825 8
SLM+HT+HIP 940 872 16

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Yansheng Yao, Jun Wang, Qingbo Chen, Chen Ding, Jianping Tang, Zhangsen Ge. Research Status of Defects and Defect Treatment Technology for Laser Additive Manufactured Products[J]. Laser & Optoelectronics Progress, 2019, 56(10): 100004

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