1 Introduction
2 Secondary Dendrite Arm Spacing Analysis
2.1 Low Pressure Die Casting Simulation
2.2 Spectrochemical Analysis with Optical Emission Spectroscopy
2.3 SDAS Mapping Through Micrographs
2.4 Correlation Between Measured and Simulated SDAS
3 Experiments and Simulation Analysis on Case Studies
Area | Motivation | FStime 60% [s] | FStime 90% [s] | Solidification [s] | Liquidus to Solidus [s] |
---|---|---|---|---|---|
1 | High FStime | 150.01 | 174.07 | 186.75 | 122.96 |
2 | Thick wall | 78.51 | 85.18 | 98.69 | 49.54 |
3 | Thin wall | 65.91 | 76.81 | 84.38 | 39.18 |
4 | Short FStime | 61.14 | 73.61 | 82.40 | 37.43 |
5 | Zone for hardness specimens | 71.61 | 83.71 | 92.67 | 47.03 |
6 | Intermediate Fstime | 89.26 | 103.83 | 123.33 | 74.49 |
NR | Si | Fe | Cu | Mn | Mg | Zn | Ti | Sr | Others | Al |
---|---|---|---|---|---|---|---|---|---|---|
UNI EN 1076 | 6.50–7.50 | <0.15 | <0.03 | <0.10 | 0.25–0.45 | <0.07 | <0.18 | – | <0.10 | Balance |
Casting1 | 7.18 | 0.103 | 0.002 | 0.002 | 0.399 | 0.001 | 0.118 | 0.028 | < 0.01 | 92.3 |
Casting2 | 7.16 | 0.104 | 0.003 | 0.003 | 0.376 | 0.002 | 0.110 | 0.029 | <0.01 | 92.2 |
Casting3 | 6.98 | 0.103 | 0.002 | 0.002 | 0.400 | 0.001 | 0.112 | 0.028 | <0.01 | 92.4 |
Nr | mean [µm] | max [µm] | min [µm] | dev [µm] |
---|---|---|---|---|
1 | 41 | 47 | 33 | 14 |
2 | 25 | 31 | 19 | 11 |
3 | 23 | 27 | 20 | 7 |
4 | 24 | 29 | 21 | 8 |
5 | 27 | 32 | 20 | 12 |
6 | 28 | 38 | 24 | 14 |