东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (5): 671-675.DOI: 10.12068/j.issn.1005-3026.2014.05.015

• 材料与冶金 • 上一篇    下一篇

冷轧差厚板退火组织性能的实验研究

支颖，田野，张金连，刘相华   

  1. (东北大学 轧制技术及连轧自动化国家重点实验室， 辽宁 沈阳110819)
  • 收稿日期:2013-07-29 修回日期:2013-07-29 出版日期:2014-05-15 发布日期:2014-08-18
  • 通讯作者: 支颖
  • 作者简介:支颖(1978-)，女，辽宁开原人，东北大学讲师，博士;刘相华(1953-)，男，黑龙江双鸭山人，东北大学教授，博士生导师.
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N110407004，N130407007);国家自然科学基金资助项目(51174249，51034009).

Experimental Research on Microstructure and Properties of TRB After Annealing

ZHI Ying， TIAN Ye， ZHANG Jinlian， LIU Xianghua   

  1. State Key Laboratory of Rolling and Automation， Northeastern University， Shenyang 110819， China.
  • Received:2013-07-29 Revised:2013-07-29 Online:2014-05-15 Published:2014-08-18
  • Contact: ZHI Ying
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摘要： 对CR340冷轧差厚板系列退火工艺进行实验研究，对比分析了不同退火工艺对差厚板不同厚度区组织和性能的影响，探究差厚板退火性能差异化的原因.结果表明:差厚板不同厚度区的组织性能差异取决于冷轧变形量、退火温度和保温时间.通过拟合实验数据建立了差厚板不同厚度区退火温度和保温时间与最终屈服强度和延伸率的对应关系，回归了差厚板退火后硬度与屈服强度的函数关系，为冷轧差厚板退火工艺的制定及组织性能控制提供了参考数据.

关键词: 冷轧差厚板, 退火, 再结晶, 屈服强度, 延伸率

Abstract: A series of experiments of annealing for tailor rolled blank (TRB) of CR340 were carried out in order to study the microstructure and properties. The effects of the annealing temperature and time on the microstructure and properties of TRB in the area with different thickness were analyzed， and the reasons of different properties of TRB after annealing were explored. The results showed that differences of the microstructure and properties of TRB were determined by the amount of cold deformation，annealing temperature and holding time. By fitting the experimental data， the corresponding relationship between the yield strength and the elongation of TRB in the area of different thickness and the annealing temperature and holding time， and the function of the hardness and yield strength of TRB after annealing were established，which provide a reference for formulating the annealing processes and controlling microstructure and properties of TRB.

Key words: TRB(tailor rolled blank), annealing, recrystallization, yield strength, elongation

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