分别采用基于薄板坯连铸连轧(CSP)工艺和传统热连轧工艺条件下的低碳钢板作为冷轧基料,在实验室模拟现场工艺进行了冷轧和退火.通过金相观察和X射线衍射织构分析,比较了两种工艺下低碳钢板的组织和织构演变的规律.结果表明:两种试样冷轧后α取向线上显著增加的织构有较大的区别,CSP工艺下是{001}<110>,而传统工艺下是{112}<110>;在同样的冷轧及退火工艺条件下,CSP条件下的钢板在退火过程中发生再结晶需要的温度更高,时间更长;对于CSP钢板,退火对γ取向线的影响要大于冷轧对其的影响,而对于传统热连轧钢板,冷轧和退火过程对γ取向线都有比较大的影响.
Low carbon steel sheets produced by compact strip production(CSP) and traditional technology were cold rolled and annealed in laboratory. The evolution of microstructure and texture of the steel sheets were investigated by means of optical microscope and XRD. The results show that the texture in the steel increased sharply after cold rolling was quite different between the two different samples. The {001}<110> texture and {112}<110> texture is observed in the sheets produced by CSP and traditional technology, respectively. Recrystallization of CSP sheets occurs at higher temperature and needs more time. For CSP sheets, recrystallization plays a more important role for the increase of γ-fiber texture compared with cold rolling. However, the contribution of cold rolling and annealing to increasing γ-fiber texture is both important for the traditional hot rolled sheets.
参考文献
| [1] | 干勇.薄板坯连铸连轧生产技术若干问题[J].钢铁,2004(08):24-33. |
| [2] | Dieter Rosenthal.Second generation of CSP plant and future development trends[A].广东广州,2002:43. |
| [3] | 崔忠圻;覃耀春.金属学及热处理[M].北京:机械工业出版社,2007 |
| [4] | 傅杰,康永林,柳德橹,周德光,王中丙,陈贵江.CSP工艺生产低碳钢中的纳米碳化物及其对钢的强化作用[J].北京科技大学学报,2003(04):328-331. |
| [5] | 毛卫民;张新明.晶体材料织构定量分析[M].北京:冶金工业出版社,1993 |
| [6] | Ray R K;Jonas J J;Hook R K .Cold rolling and annealing texture in low carbon and extra low carbon steels[J].In Mater Rev,1994,39(04):129-1172. |
| [7] | Samajdar I;Vedinden B;Van Houtte P .Texture changes through grain growth in Ti-Bearing IF steel investigated by orientation imaging microscopy and X-Ray diffraction[J].ISIJ International,1997,37(10):1010-1016. |
| [8] | Jong-Tae Park;Jerzy A. Szpunar .Evolution of recrystallization texture in nonoriented electrical steels[J].Acta materialia,2003(11):3037-3051. |
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