Effect of Sn addition on evolution of primary recrystallization texture in 3% Si steel

Abstract

The evolution of the primary recrystallization texture was investigated for 3%Si steel without and with solute Sn. The texture component just after the completion of recrystallization was {111}<112> in both the Sn-less steel and the Sn-added steel. However, while the {111}<112> orientation remained the main texture component in the Sn-less steel after grain growth at 850°C, the {411}<148> orientation replaced the {111}<112> orientation as the main texture component in the Sn-added steel. In Sn less steel, the frequency of low angle boundaries decreased during grain growth indicating the movement of low angle boundaries which are major boundaries around {111}<112> grains. The addition of Sn selectively suppressed the decrease of the frequency of low angle during grain growth. The Monte-Carlo grain growth simulation in which the mobility of grain boundaries depended on the grain boundary misorientation angle (ω) was conducted. The simulation results suggested that reducing mobility of low angle boundaries (ω<15°) and high angle boundaries (ω>45°) enhanced the development of {411}<148> grains during grain growth with high angle boundaries (15 <148> grains. The difference in mobility between the low angle boundaries (ω<15°) and high angle boundaries (15