利用背散射电子衍射(EBSD)技术,研究了不同连续退火温度下Ti-IF钢微观取向的演变规律,并对不同退火温度下退火板的力学性能进行研究。研究发现当退火温度较低时(780℃)织构分布相对随机,随退火温度升高,ND∥<111>织构比例增加,在860℃退火时得到的r值最高,同时ND∥<111>织构比例最高,但当退火温度继续升高到900℃时,所有取向的晶粒均得到发展,使ND∥<111>织构比例和退火板的r值降低。 The evolution of micro-orientation of Ti-IF steel at different continuous annealing temperatures was studied by backscattered electron diffraction (EBSD) technique. The mechanical properties of annealed sheets at different annealing temperatures were also studied. The results show that when the annealing temperature is low (780 ℃), the texture distribution is relatively random. With the increase of annealing temperature, the proportion of ND∥ <111> texture increases. When annealing at 860 ℃, the value of r is the highest, while ND∥ <111 However, when the annealing temperature continues to increase to 900 ℃, all orientated grains are developed, so that the ratio of ND ∥ 111 texture and the r value of annealed sheet decrease.