Research Article
Investigation of Performance and Residual Stress Generation of AlSi10Mg Processed by Selective Laser Melting
Table 3
Mechanical properties of SLM AlSi10Mg samples.
| | Sample number | Tensile strength (Rm/MPa) | Elongation (δ5%) | Impact energy | Hardness (Hv10) | Density | | Absolute value (g/cm3) | Relative value (%) |
| | Uniformity scanning, preheat to 80°C | 1 | 327.0 | 2 | 4.8 | 172 | 2.62 | 97.76 | | 2 | 295.0 | 2.5 | 4.7 | 173 | 2.62 | 97.76 | | 3 | 288.0 | 1.5 | 4.9 | 165 | 2.62 | 97.76 | | Average | 303.3 | 2 | 4.8 | 170 | 2.62 | 97.76 | | Chessboard scanning, preheat to 80°C | 1 | 391.0 | 4 | 6.1 | 176 | 2.66 | 98.88 | | 2 | 381.0 | 3.5 | 6.3 | 170 | 2.64 | 98.50 | | 3 | 383.0 | 1.5 | 6.1 | 182 | 2.65 | 98.69 | | Average | 385.0 | 3 | 6.17 | 176 | 2.65 | 98.69 | | Uniformity scanning, preheat to 120°C | 1 | 308.3 | 1.69 | 4.3 | 247 | 2.604 | 97.16 | | 2 | 306.1 | 1.80 | 4.1 | 253 | 2.608 | 97.31 | | 3 | 316.2 | 2 | 4.2 | 247 | 2.606 | 97.24 | | Average | 310.2 | 1.83 | 4.2 | 249 | 2.606 | 97.24 | | Chessboard scanning, preheat to 120°C | 1 | 383.0 | 2.5 | 5.4 | 252 | 2.60 | 97.01 | | 2 | 383.0 | 3 | 5.2 | 253 | 2.61 | 97.39 | | 3 | 378.0 | 3 | 5.4 | 266 | 2.62 | 97.76 | | Average | 381.3 | 2.83 | 5.33 | 257 | 2.61 | 97.39 | | Uniformity scanning, preheat to 160°C | 1 | 310.0 | 5.4 | 1.7 | 231 | 2.59 | 97.00 | | 2 | 300.3 | 3.6 | 1.5 | 220 | 2.58 | 97.00 | | 3 | 299.0 | 3.6 | 1.7 | 227 | 2.58 | 97.00 | | Average | 303.1 | 4.2 | 1.63 | 226 | 2.583 | 97.00 | | Chessboard scanning, preheat to 160°C | 1 | 370.0 | 6 | 2.2 | 229 | 2.60 | 97.01 | | 2 | 375.0 | 5 | 1.9 | 233 | 2.60 | 97.01 | | 3 | 346.0 | 5 | 2.2 | 236 | 2.60 | 97.01 | | Average | 363.7 | 5.33 | 2.1 | 233 | 2.60 | 97.01 |
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