硼对薄板坯连铸连轧低碳深冲钢板织构的影响

Influences of boron on the texture of low carbon deep drawing steel sheets produced by compact strip production

以薄板坯连铸连轧(CSP)工艺下生产的含B和无B低碳热轧、罩式退火板为实验材料,研究了B对低碳深冲钢板织构的影响.利用电解化学相分析、内耗和拉曼实验等方法和结果,从化学成分、析出物两个方面对热轧、退火板中织构的形成与发展进行了系统分析.结果表明:无B热轧板的AlN含量比含B热轧板中的高,后者的织构优于前者;退火板中含B钢和无B钢中AlN含量几乎相等,然而无B退火板织构优于含B退火板的.AlN不是影响织构发展的唯一决定因素,B、BN也会影响织构的发展.

The influence of boron on the texture of low carbon deep drawing steel sheets was studied with B-contained and B-free low-carbon hot-rolled and batch-annealed strips produced by CSP（compact strip production）as experimental materials.Texture formation and development of the hot-rolled and batch-annealed strips were analyzed in terms of chemical composition and precipitates by electrolytic chemical phase analysis,internal friction and Raman analysis.The results show that the AlN content of B-free hot-rolled strips is much more than that of B-contained hot-rolled strips,but the latter texture is better than the former.The AlN contents of B-free and B-contained annealed strips are almost equal,however,the texture of B-contained annealed strips is bad.It is indicated that AlN is not only the determinant factor that affects texture development,but B and BN also have some influences.