通过单向拉伸试验检测试验钢力学性能，利用金相显微镜观察低碳铝镇静钢板冷轧态与退火态的纤维组织，并用X射线衍射仪测量试验钢中不同类型织构的含量。利用单机架可逆轧机轧制，冷轧压下率由52％升高到80％，低碳铝镇静钢的屈服强度为187～211MPa，抗拉强度为284～294MPa，屈强比为0．66～0．72，总伸长率为38％～43％，n值为0．23～0．24，而r值为1．13～1．36，｜△r｜值为0．39～0．65。结果表明，冷轧压下率的提高使得退火再结晶晶粒尺寸均匀细小，储存能增加，1纤维织构充分形成和发展。当冷轧压下率达到一定程度时，{111}织构增强速度减弱，不利织构{100}组分增幅较大。综合作用的结果是，当冷轧压下率为68％时，r值出现峰值且｜△r｜值较小，深冲性能最好。
Microstructure and mechanical properties of cold rolled and annealed low carbon Al-killed steel sheets with different reduction were investigated by means of OM,XRD and tensile test. The test sample was rolled by single stand reversing mill. When the cold roiling reduction of the steel increases from 52% to 80% , the mechanical properties of low carbon Al-killed steel sheets are as follow: yield strength is 187 -211 MPa, tensile strength is 284 -294 M Pa,ratio of yield strength to tensile strength is 0.66 -0.72, elongation is 38% - 43% ,n value is 0. 23 -0. 24,γ value is 1. 13 - 1.36 and { Aγ} value is 0. 39 -0. 65. The results show that rescrystallization grain size becomes small and even,storted energy increases, γ fiber texture forms and develops fully with the increasing of cold roiling reduction. When the reduction of cold rolling rises to a certain degree,the increased speed of { 111 } texture reduces and negative {100} texture increases considerably. The result of the comprehensive function is that,when the cold roiling reduction is 68% ,γ value reaches the peak and | △ γ | value is relatively small,deep drawability of the steel sheets is the best.
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