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含Ti深冲钢的研究结果指出,Ti以Ti(CN)在热轧板内析出并对冷轧和退火的微观结构产生影响。 含Ti钢的冷轧和再结晶的晶格畸变变化次序是:随Ti~*/C+N的增加,上述晶格畸变之间的差异增大。退火后形成以晶格畸变小的组分占据优势的晶粒结构。 工艺实验表明:含Ti钢性能颇受退火温度影响,但升温速度对Ti~*/(C+N)≥2.1钢的性能影响不显著。在C≤0.05％。Ti~*/(C+N)>2.1,800℃以上到温装炉退火的低碳深冲钢均可获得较好的能性:r=1.7～1.8,n=0.27～0.28,-0.1<△r<0.3。
The results of Ti-bearing deep-drawn steel indicate that Ti precipitates in the hot-rolled sheet and affects the microstructure of cold-rolled and annealed Ti. The order of the lattice distortion of the cold rolled and recrystallized Ti-containing steels is as follows: the difference between the above lattice distortions increases with the increase of Ti ~ * / C + N. After annealing, a crystal structure dominated by a component with a small lattice distortion is formed. The experimental results show that the properties of Ti-containing steels are affected by the annealing temperature, but the heating rate has no significant effect on the properties of Ti ~ * / (C + N) ≥2.1 steels. At C ≤ 0.05%. Ti ~ * / (C + N)> 2.1,800 ℃ are better than those of low carbon deep drawing steel annealed in warm furnace: r = 1.7-1.8, n = 0.27-0.28, -0.1 < △ r <0.3.