Effect of cooling condition after warm rolling on the development of microstructure and texture in an ELC steel

摘要

The microstructure and texture development in an extra low carbon steel during warm rolling (～ 80%) in a single pass at four different temperatures and at two different cooling conditions were studied. The γ fibre texture develops at lower warm rolling temperatures (500 °C and 600 °C) and a very weak α fibre develops at higher rolling temperatures (700 °C and 800 °C). Very little or no difference in microstructure and texture development was observed under two cooling conditions at four rolling temperatures. No significant effect of cooling rates could be found at higher temperatures of rolling due to very fast static recrystallisation after rolling which also caused the weakening of texture. On the other hand deformation bands produced at low temperatures rolling helped in forming strong γ fibre textures.