东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (7): 945-948.DOI: -

• 论著 • 上一篇    下一篇

双辊铸轧新型耐候带钢的研究

邱以清;刘振宇;周国平;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;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50574018);;

Study on new type weathering-resistance steel strip developed by twin-roll strip casting

Qiu, Yi-Qing (1); Liu, Zhen-Yu (1); Zhou, Guo-Ping (1); Wang, Guo-Dong (1)   

  1. (1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Qiu, Y.-Q.
  • About author:-
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摘要： 采用场发射电子探针显微分析仪、扫描电镜、光学显微镜以及恒温恒湿实验箱等研究手段,对双辊铸轧含磷铜低碳钢薄带进行了系统的分析.实验结果表明,铸轧薄带表面附近有富磷层形成,而基体中磷的浓度远低于薄带的名义磷含量.铸轧磷铜钢薄带经冷轧和退火处理后,具有较好的塑性,甚至当磷质量分数高达0.26%时,延伸率仍然在30%以上.同时,它的耐蚀性远优于通过传统工艺方法而获得的磷铜钢薄带,特别是当磷质量分数超过0.15%后,经过一定的腐蚀时间后,它的表面将会产生一层致密的磷化层保护膜,从而使其具有极强的耐蚀性.

关键词: 双辊薄带铸轧, 含磷铜低碳钢, 富磷层, 耐蚀性, 塑性

Abstract: The low-carbon steel strip containing P and Cu acquired through twin-roll strip casting process, was systematically analyzed by FE-EPMA, SEM, OM as well as constant temperature and humidity testing device. The results indicated that a P-rich layer is formed near the surface of twin-roll cast strip, while the P concentration in the matrix is far lower than the nominal content. After cold-rolling and annealing treatment, the strip containing P and Cu exhibits the better plasticity, and the elongation still keeps above 30% even at P content up to 0.26wt%. Simultaneously, it is far superior in corrosion resistance to that by the conventional process. Especially a dense phosphate layer will be formed on the surface after a certain corrosion time when the P content over 0.15 wt%, which makes the corrosion resistance excellent.

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