Acta Metallurgica Sinica (English Letters) ›› 2011, Vol. 24 ›› Issue (5): 343-350.DOI: 10.11890/1006-7191-115-343

• 研究论文 • 上一篇    下一篇

精轧温度对铁素体不锈钢组织、织构演变的影响

高飞1,刘振宇2,刘海涛3,王国栋4   

  1. 1. 东北大学
    2.
    3. 东北大学 轧制技术及连轧自动化国家重点实验室
    4. 辽宁沈阳市东北大学轧制技术及连轧自动化国家重点实验室
  • 收稿日期:2010-11-15 修回日期:2011-02-18 出版日期:2011-10-25 发布日期:2011-10-18
  • 通讯作者: 高飞

Influence of the finish rolling temperatures on the microstructure and texture evolution in the ferritic stainless steels

Fei GAO, Zhenyu LIU, Haitao LIU, Guodong WANG   

  1. The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
  • Received:2010-11-15 Revised:2011-02-18 Online:2011-10-25 Published:2011-10-18
  • Contact: Fei GAO

摘要: The influence of finish rolling temperature on microstructure and texture evolution in Nb and B micro-alloyed ultra purified Cr17 ferritic stainless steels were investigated. The hot rolled bands were produced by conventional rolling process and the finish rolling at relatively low temperatures or “warm rolling”, which were annealed, cold rolled to 1.0 mm thick sheets, and annealed in the same processes. The microstructure was observed by optical microscopy, scanning electron microscopy and transmission electron microscopy, and X-ray diffraction was used to characterize texture evolution processes. The results showed that as compared to conventional hot rolling process, the warm rolling had led to the refined and homogeneous microstructure and uniform recrystallization texture along γ-fiber in final sheets, indicating that the finish rolling at relatively low temperatures can be the effective way to significantly improve the formability of final sheets.

Abstract: The influence of the finish rolling temperature on the microstructure and texture evolution of Nb and B micro-alloyed ultra purified Cr17 ferritic stainless steels was investigated. The hot rolled bands were produced by conventional rolling process and the finish rolling at relatively low temperatures or ``warm rolling". The microstructure was observed by optical microscopy, scanning electron microscopy and transmission electron microscopy, and X-ray diffraction was used to characterize the texture evolution processes. The results showed that as compared to conventional hot rolling process, the warm rolling has led to the refined and homogeneous microstructure and uniform recrystallization texture along γ-fiber in final sheets, indicating that the finish rolling at relatively low temperatures can be the effective way to improve significantly the formability of final sheets.

Key words: Ultra purified Cr17 ferritic stainless steel, Finish rolling temperature, Microstructure, Texture

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