Effect of Ti on the Development of Rolling Textures in High Purity Iron

Abstract

With the method of the crystallite orientation distribution function analysis, the development of the rolling texture was studied in detail on a Fe-0.004%C-0.20%Ti alloy cold rolled up to 90% reduction in thickness. It was found that the effect of Ti was widely different among various rolling texture components. The addition of Ti enhanced the development of the 〈 110 〉 ‖ RD fiber rolling texture component by promoting the rotation about the 〈 110 〉 ‖ RD axis. This resulted in the development of the strong {112} 〈 110 〉 texture component. As to the 〈 110 〉 ‖ TD fiber texture component, it was found that, although the addition of Ti did not affect the rotation about the 〈 110 〉 ‖ TD axis in the range {110} 〈 001 〉 to {554} 〈 225 〉 , it strongly suppressed the rotation of {554} 〈 225 〉 into {111} 〈 112 〉 . As a result, strong {554} 〈 225 〉 rolling texture component was developed below 70% rolling reduction. This component seems to provide origins of the {554} 〈 225 〉 recrystallization texture commonly observed in the Ti-stabilized steel. Such changes in the rolling texture would be expected, since slip modes are strongly affected by scavenging of C atom by Ti, or by the presence of very fine TiC precipitate particles.