Zhenyu Feng, Jiawei Ma, Shuo Qi, Hongyu Zhang, Kun Chen. Effect of Pore Defects on Tensile Properties of Al-Mg-Sc-Zr Alloy Formed by Selective Laser Melting[J]. Laser & Optoelectronics Progress, 2023, 60(7): 0714004
- Laser & Optoelectronics Progress
- Vol. 60, Issue 7, 0714004 (2023)
Fig. 1. Test sample
Fig. 2. Scan results of X-CT. (a) Three-dimensional reconstruction image; (b) pore size distribution; (c) pore sphericity distribution
Fig. 3. Schematic diagram of tensile specimenEs dimensions
Fig. 4. RVE model with randomly distributed pores
Fig. 5. Stress-strain curve
Fig. 6. Dispersion of tensile strength
Fig. 7. RVE model with defects. (a) Porosity is 0.5%; (b) porosity is 1.5%; (c) porosity is 2.5%
Fig. 8. Variation of tensile properties with porosity. (a) Tensile strength; (b) elasticity modulus
Fig. 9. RVE model. (a) Porosity is 0.5%, pore size is 50 μm; (b) porosity is 1.5%, pore size is 100 μm; (c) porosity is 2.5%, pore size is 150 μm
Fig. 10. Effect of pore size on tensile properties at different porosities. (a) Tensile strength; (b) elasticity modulus
Fig. 11. Equivalent stress cloud maps of RVE models with different pore sizes at 2.5% porosity. (a) 25 μm; (b) 50 μm; (c) 100 μm; (d) 150 μm; (e) 175 μm
Fig. 12. Equivalent stress cloud maps of RVE models. (a) Porosity is 0.5%, pore size is 50 μm; (b) porosity is 0.5%, pore size is 100 μm; (c) porosity is 1.5%, pore size is 50 μm; (d) porosity is 1.5%, pore size is 100 μm
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Table 1. Chemical composition of Al-Mg-Sc-Zr powders
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Table 2. Particle size distribution of Al-Mg-Sc-Zr powders
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Table 3. X-CT technical parameters
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Table 4. Material parameters of Al-Mg-Sc-Zr alloy formed by SLM
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Table 5. Material parameters of pores
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Table 6. Maximum equivalent stress of RVE model with different porosity and pore size
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