东北大学学报（自然科学版）

东北大学学报（自然科学版） ›› 2013, Vol. 34 ›› Issue (12): 1730-1733.DOI: 10.12068/j.issn.1005-3026.2013.12.014

• 材料与冶金 • 上一篇    下一篇

单道次热轧对Fe-15Si硅钢氧化层形貌的影响

刘小江，曹光明，何永全，刘振宇   

  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)
  • 发布日期:2013-07-09
  • 通讯作者: 刘小江
  • 作者简介:刘小江(1980-)，男，山西大同人，东北大学博士研究生；刘振宇(1967-)，男，内蒙古赤峰人，东北大学教授，博士生导师.
  • 基金资助:
    “十二五”国家科技支撑计划项目(2011BAE13B04)；国家自然科学基金资助项目(51204047)

Effects of SinglePass Hot Rolling on Oxide Scales Morphology of Fe15Si Silicon Steels

LIU Xiaojiang， CAO Guangming， HE Yongquan， LIU Zhenyu   

  1. The State Key Laboratory of Rolling and Automation， Northeastern University， Shenyang 110819， China.
  • Published:2013-07-09
  • Contact: LIU Xiaojiang
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摘要： 将Fe-15Si硅钢试样分别在1000~1200℃空气条件下氧化30min，观察发现在1000℃和1100℃时，氧化层与基体界面处存在硅酸亚铁，而当温度为1200℃时，硅酸亚铁不但存在于界面处，同时也存在于氧化层中.将各温度下得到的带有氧化层的试样进行单道次热轧试验，压下率分别为10%和30%，发现1000℃和1100℃时，较高的压下率使氧化层破碎更加严重，但是单道次热轧未能改变氧化层的结构；当温度为1200℃时，由于液态的硅酸亚铁的出现，单道次热轧能够将界面处的液化的硅酸亚铁层挤压到氧化层中，消除了硅酸亚铁层的钉扎基体的效应，改善了氧化层与基体界面的平直度.

关键词: 氧化层, 硅钢, 热轧, 硅酸亚铁, 形貌

Abstract: Specimens of Fe15Si silicon steel were oxidized at 1000~1200℃ in air for 30min.At 1000℃ and 1100℃ fayalite was observed at the scale/substrate interface.While at 1200℃ fayalite was found both at the scale/substrate interface and at the outer oxide layer. Then after the singlepass hot rolling process， with the compression ratio of 10% and 30%， it was found that at 1000℃ and 1100℃， higher compression rate accelerated the broken of the scale layers， but the scale structure was not affected by the hot rolling process， while for the specimens oxidized at 1200℃， because of the formation of liquefied fayalite， the fayalite was squeezed into the outer oxide layer in the singlepass hot rolling. Pinning effects were weakened at the scale/substrate interface， and flatness of the interface between the scales and the substrate was improved.

Key words: oxide scale, silicon steels, hot rolling, fayalite, morphology

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