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›› 2013, Vol. 13 ›› Issue (1): 158-163.

• 材料工程专栏 • 上一篇    下一篇

罩式退火工艺对Ti-IF钢组织性能的影响

冯运莉 齐文婧 张丹 郭帅   

  1. 河北联合大学冶金与能源学院 河北联合大学冶金与能源学院 河北联合大学冶金与能源学院
  • 收稿日期:2013-03-06 修回日期:1900-01-01 出版日期:2013-02-20 发布日期:2013-02-20
  • 通讯作者: 冯运莉

Effects of Bath Annealing Process on Microstructure Properties of Ti-IF Steel

FENG Yun-li QI Wen-jing ZHANG Dan GUO Shuai   

  1. College of Metallurgy and Energy, Hebei United University College of Metallurgy and Energy, Hebei United University College of Metallurgy and Energy, Hebei United University
  • Received:2013-03-06 Revised:1900-01-01 Online:2013-02-20 Published:2013-02-20
  • Contact: FENG Yun-li

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摘要： 利用光学显微镜、伺服拉伸实验机和X射线衍射仪研究了不同退火温度和保温时间对Ti-IF钢组织、性能及r值的影响规律，分析了工艺优化后的再结晶织构. 结果表明，8 h为实验Ti-IF钢从部分饼形晶粒到绝大部分等轴晶粒演变过程中的一个时间界限，冷轧板在710℃下保温8 h退火后，再结晶晶粒为均匀的等轴晶粒，r值为2.347，抗拉强度312 MPa，延伸率44.7%，{111}面织构密度水平达到13.1. 在此工艺条件下，Ti-IF钢得到优良的深冲性能，该实验结果可为Ti-IF钢罩式退火工艺的优化提供理论依据.

关键词: 组织, 退火温度, 保温时间, 深冲性能, 织构

Abstract: The effects of annealing temperature and holding time on the microstructure, properties and r-value of Ti-IF steel were studied, and the recrystallized texture of optimized Ti-IF steel was analyzed with optical microscope, servo tensile testing machine and X-ray diffraction. The results show that the time boundary from the partial pancake grains to most equiaxial grains in the evolution process is 8 h, the recrystallized equiaxial grains are uniform, the steel sample has r value at 2.347, tensile strength 312 MPa, extension rate 44.7% and density level of {111} texture 13.1 when the cold-rolling plate is annealed at 710℃ and holding 8 h. The Ti-IF steel can obtain good deep drawability in this process. The experimental research provides theoretical guidance for perfection of bath annealing process of Ti-IF steel sheet.

Key words: microstructure, annealing temperature, holding time, deep drawability, texture

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