Journal of Northeastern University ›› 2010, Vol. 31 ›› Issue (3): 366-369.DOI: -

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Effect of two-step cold rolling on deep drawability and texture of ferritic stainless steel

Du, Wei (1); Liu, Zhen-Yu (1); Jiang, Lai-Zhu (2); Sun, Quan-She (2)   

  1. (1) The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China; (2) Baosteel Research Institute, Baoshan Iron and Steel Co., Ltd., Shanghai 200431, China
  • Received:2013-06-20 Revised:2013-06-20 Published:2013-06-20
  • Contact: Du, W.
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Abstract: The effects of one-step and two-step cold rolling schedule on deep drawability and texture of ferritic stainless steel were investigated comparatively. The results showed that the high average plastic strain ratio rm=1.92, especially the diagonal r-value at 45° which is higher than either longitudinal or transverse r-value were achieved after the one-step cold rolling with a percentage reduction up to 90%. Thus, the value of planar anisotropy parameter Δr becomes negative, i.e., Δr=-0.31. With the total reduction kept constant, the average r-value of the sheet as the products from the two-step cold rolling fluctuates little(rm=1.90) with Δr=0.14, a very small value. The analysis results of recrystallization texture revealed that in the sheet from one-step cold rolling an intensified γ texture forms, and its peak value deviates from {111} axial orientation but shift to the orientation {223}<582>. However, in the sheet from two-step cold rolling a homogeneous γ recrystallization texture forms.

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