Research Article
Statistical Model for the Mechanical Properties of Al-Cu-Mg-Ag Alloys at High Temperatures
Table 12
Model predicted values versus measured values for validating alloy (Al-3Cu-0.5Mg-0.3Ag) for the high-temperature study.
| | Yield strength (MPa) | Ultimate tensile strength (MPa) | Measured | Predicted | Relative % error | Measured | Predicted | Relative % error |
| Underaged (190°C) | 200 | 236 | 15.3% | 239 | 248 | 3.6% | Peak-aged (190°C) | 240 | 236 | −1.7% | 245 | 292 | 16.1% | Underaged (250°C) | 165 | 202 | 18.3% | 173 | 190 | 9% | Peak-aged (250°C) | 160 | 202 | 20.8% | 173 | 234 | 26% |
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