IF钢铁素体区热轧和退火过程中织构的演变

研究了一种Ti—IF（Interstitial—free）钢在铁素体区热轧和退火过程中织构的变化．由于轧制过程摩擦的影响，热轧织构和退火织构在厚度方向上都有很大的差异．在钢板的表层，热轧织构的主要组分是{110}（001），退火后表层的铁素体晶粒没有发生再结晶，该组分转变为（001）（110）；在试样的中心和1／4面，热轧织构组分主要是较弱的（111）／／ND（板法向）织构和部分（110）／／RD且在{001}（110）处最强；退火后中心面上的晶粒发生了完全再结晶，{001}组分转变为（111）／／ND组分使（111）／／ND织构成为唯一织构组分且在{111}（112）处最强．

Texture evolution of a IF steel during ferritic rolling and direct annealing

The texture characteristics in a Ti-IF steel during hot rolling in ferrite region and subsequently annealing were investigated. The results show that the texture characters at the surface were absolutely different from that at mid-section and 1/4-section due to the friction between the steels and rolls. The main components at surface before annealing were {110}<001> orientation, which transformed to {001}<110> after annealing. While at the mid-section and 1/4-section, weak <111>//ND (normal direction) texture and strong <110>//RD (rolling direction) texture focused on {001} <110> orientation was formed before annealing, but {001} <110> orientation transformed to {111}<112> transformation and only <111>//ND recrystallization texture existed after annealing.