Abstract: The recrystallization texture evolution and mechanical properties of coldrolled BH (bakehardening)IF (interstitial free) steel were investigated under different annealing parameters. The results indicated that the tensile strength and the elongation increase with increasing heating rate. In the fully recrystallized condition， the ultrarapid heating gives rise to substantially refined structures with an unconspicuous reduction of average ferrite grain size. Under the condition of ultrarapid heating rate， XRD texture analysis showed that the difference in γ texture components and orientation intensity of BHIF steel get narrow and the γ texture becomes more homogenous. The strong γ texture is obtained simultaneously for both rapid and normal heating rate. The intensity of {111} texture increases with increasing holding time， so the r value increases. Under the ultrarapid heating rate， the r0 value decreases and the r90 increases， while the rm (average) remains almost unchanged.

Key words: BHIF steel, heating rate, plastic strain ratio, recrystallization texture, XRD