东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (3): 366-369.DOI: -

• 论著 • 上一篇    下一篇

二步冷轧对铁素体不锈钢深冲性能和织构的影响

杜伟;刘振宇;江来珠;孙全社;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;宝山钢铁股份有限公司研究院;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50734002)

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.
  • About author:-
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摘要： 比较了一步冷轧和二步冷轧对铁素体不锈钢深冲性能和织构的影响.结果显示,采用一步冷轧(冷轧压下率90%)后,获得了高的平均r值(rm=1.92),且45°方向的r值要大于轧向和横向的r值,导致了材料的Δr呈负值(Δr=-0.31);在总压下率一定的情况下,采用二步冷轧后,薄板的平均r值变化不大(rm=1.90),但材料的平面各向异性很小(Δr=0.14).对两种工艺的再结晶织构分析表明,一步冷轧后薄板生成了强烈的γ织构,但是织构的峰值明显偏离了{111}轴,位于{223}〈582〉处;二步冷轧后薄板则生成了均匀的γ再结晶织构.

关键词: 深冲性能, 二步冷轧, 织构, 铁素体不锈钢

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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