东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (4): 414-417.DOI: -

• 论著 • 上一篇    下一篇

800 MPa级双相组织低屈强比钢厚板研究

张丕军;刘相华;王国栋;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室;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110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-04-15 发布日期:2013-06-23
  • 通讯作者: Zhang, P.-J.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(5047408650334010)

Development of a 800 MPa dual-phase and low yield ratio heavy steel plate

Zhang, Pi-Jun (1); Liu, Xiang-Hua (1); Wang, Guo-Dong (1)   

  1. (1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-04-15 Published:2013-06-23
  • Contact: Zhang, P.-J.
  • About author:-
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摘要： 对基本成分为Fe-0.1C-Mo的微合金HSLA钢进行了变化轧制与冷却参数的试验,分析了钢的组织形貌及微观结构;研究了变形和冷却参数与钢的屈强比、缺口冲击功、延伸率等的关系.结果表明:通过对轧制、冷却工艺的组合与变化,实现对钢的强度、塑性、屈强比的控制;抗拉强度800 MPa级的厚钢板,其屈强比控制在0.75以下,低温冲击韧性良好.钢的组织主要由针状铁素体和马氏体两相组成.

关键词: 轧制, 冷却, 双相钢, 组织, 性能, 厚板

Abstract: Rolling and cooling experiments were carried out for the microalloyed HSLA steel of which the elementary composition is Fe-0.1C-Mo, and its morphology and microstructures were analyzed. The effects of deformation and cooling parameters on the yield ratio, Charpy notch impact toughness and elongation of the steel were investigated. It was found that a precise control of its strength, ductility and yield ratio can be achieved through a properly changed combination of rolling and cooling parameters. The yield ratio of the developed grade 800 MPa tensile strength heavy steel plate is controlled below 0.75 with excellent low-temperature impact toughness provided. Mainly its metallographic structure consists of acicular ferrite and martensite.

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