硼对TSCR低碳罩式退火钢板织构的影响

摘要

To study the influence of boron on the texture of low carbon batch-annealed steel with given chemistry elements produced by Compact Strip Production（CSP）,the texture of B-contained and B-free low-carbon annealed steel were tested by X-ray diffraction（ODF analyses）,and the hot-rolled and annealed sheets were analyzed by electrolysis chemical phase analysis.The results showed that γ-fiber texture in B-contained annealed steel was lower than that of B-free steel with almost equal AlN contents.Samples of hot-rolled and annealed steel with B or without B after electrolyzing contain some powders such as carbon,AlN and so on.Besides,the steel with B also contains boron compounds.It′s the coactions of the small AlN,BN,and Fe3（B,C） that affect the formation and development of texture,and B affects the development of texture mainly through the second phase particles such as BN affecting the deformation and growth of grain.It′s concluded that AlN is not the only determinant that affects the development of texture.%为了研究薄板坯连铸连轧（TSCR-Thin Slab Casting and Rolling）工艺生产条件以及给定化学成分下B对低碳罩式退火钢板织构的影响,对含B和无B退火板进行了X射线织构测试,并对热轧、退火板进行了电解化学相分析.试验结果表明：在AlN含量几乎相等的情况下,退火板中γ纤维织构组分含B钢低于无B钢;含B钢和无B钢热轧、退火板电解溶样均得到包含碳化物、AlN等在内的粉末,含B钢中还有B的化合物.含B钢中细小的AlN、BN及Fe的B、C化物共同作用影响织构的生成与发展,而B主要是通过BN等第