Table 1 Secondary dendrite arm spacing (SDAS, \(\lambda\)), cooling rate (\(\dot{T}\)), average grain size (d), maximum SGBM distance (Δmax) and ratio of Δmax/d for dilute Mg-Sn alloysa
From: Migration of solidification grain boundaries and prediction
Alloy (at.%) | SDAS (\(\lambda\), μm) | Cooling rate (\(\dot{T}\), °C/s) | Average grain size (d, μm) | Maximum GBM (Δmax, μm) | Δmax/d (%) |
|---|---|---|---|---|---|
Mg-0.21Sn | 42.5 ± 17.2 | ~8 | 241.5 ± 47.2 | 86.8 | 35.9 |
Mg-0.30Sn | 42.7 ± 16.5 | ~8 | 213.4 ± 40.1 | 71.2 | 33.4 |
Mg-0.42Sn | 41.8 ± 15.6 | ~8 | 190.3 ± 38.8 | 60.6 | 31.8 |
Mg-1.07Sn | 41.5 ± 14.5 | ~8 | 108.1 ± 18.3 | 31.2 | 28.9 |
Mg-0.63Sn | 41.6 ± 14.8 | ~8 | 144.8 ± 28.0 | 45.8 | 31.6 |
Mg-0.63Sn | 18.2 ± 5.4 | ~54 | 73.3 ± 13.1 | 23.1 | 31.5 |
Mg-0.63Sn | 11.1 ± 3.7 | ~166 | 61.9 ± 10.6 | 18.8 | 30.4 |
Mg-0.63Sn | 4.0 ± 1.4 | ~1690 | 40.8 ± 6.1 | 12.1 | 29.7 |
