1 Introduction
2 Materials and methods
Specimen | Description | Hot Rolling Temperature [K (°C)] | Coiling Temperature [K (°C)] | Nb | C | Mn | Si | N |
---|---|---|---|---|---|---|---|---|
1 | Nb-free as-cast | 923 K (650 °C) | 0.001 | 0.033 | 0.85 | 0.2 | 0.006 | |
2 | Nb-free hot-rolled | 1152 K (879 °C) | 817 K (544 °C) | 0.001 | 0.034 | 0.98 | 0.2 | 0.008 |
3 | 0.026 pct Nb hot-rolled | 1225 K (952 °C) | 894 K (621 °C) | 0.026 | 0.038 | 0.87 | 0.24 | 0.005 |
4 | 0.041 pct Nb hot-rolled | 1168 K (895 °C) | 920 K (647 °C) | 0.041 | 0.036 | 0.87 | 0.21 | 0.007 |
5 | 0.065 pct Nb hot-rolled | 1185 K (912 °C) | 774 K (501 °C) | 0.065 | 0.037 | 0.93 | 0.28 | 0.007 |
6 | 0.084 pct Nb as-cast | 869 K (596 °C) | 0.084 | 0.031 | 0.83 | 0.2 | 0.006 | |
7 | 0.084 pct Nb hot-rolled | 1170 K (897 °C) | 840 K (567 °C) | 0.084 | 0.031 | 0.83 | 0.2 | 0.006 |