金属热处理 ›› 2022, Vol. 47 ›› Issue (1): 63-68.DOI: 10.13251/j.issn.0254-6051.2022.01.011

• 专栏 • 上一篇    下一篇

加热温度对10CrNiCuSi钢氧化铁皮的影响

赵蕾1, 李建铭2, 穆晓彪1, 柴希阳1, 柴锋1, 潘涛1   

  1. 1.钢铁研究总院 工程用钢研究院, 北京 100081;
    2.渤海造船厂集团有限公司 物资管理部, 辽宁 葫芦岛 125000
  • 收稿日期:2021-09-20 修回日期:2021-11-05 出版日期:2022-01-25 发布日期:2022-02-18
  • 通讯作者: 柴希阳,高级工程师,E-mail:chaixiyang0728@163.com
  • 作者简介:赵 蕾(1994—),女,硕士研究生,主要研究方向为船舶与海工用钢的表面质量,E-mail:782014934@qq.com。

Effect of heating temperature on oxide scale of 10CrNiCuSi steel

Zhao Lei1, Li Jianming2, Mu Xiaobiao1, Chai Xiyang1, Chai Feng1, Pan Tao1   

  1. 1. Research Institute of Structural Steels, Central Iron and Steel Research Institute, Beijing 100081, China;
    2. Material Management Department of Bohai Shipyard Group Co., Ltd., Huludao Liaoning 125000, China
  • Received:2021-09-20 Revised:2021-11-05 Online:2022-01-25 Published:2022-02-18

摘要: 为改善10CrNiCuSi船板钢表面质量粗糙的问题,采用电阻炉开展了1100~1300 ℃高温氧化试验,利用弯曲试验评价了氧化铁皮的剥离性,并研究了不同温度下氧化铁皮的演变规律。结果表明,随着加热温度的升高,氧化速率增大,氧化层厚度明显增加。氧化铁皮主要由Fe2O3、Fe3O4、FeO和内氧化层组成,而内氧化层主要由FeNiCu、Fe2SiO4和FeO相组成。加热过程中Fe2SiO4/FeO共晶液相的产生对氧化铁皮的剥离性具有重要影响。在1100 ℃和1150 ℃条件下,内氧化层中的Fe2SiO4呈现颗粒状或块状弥散分布,氧化铁皮与基体之间界面平直,氧化铁皮易于剥离;在1200、1250和1300 ℃条件下,Fe2SiO4-FeO或Fe2SiO4发生熔化形成液相渗入基体和氧化铁皮中,造成界面粗糙,而锚状FeNiCu相与基体及氧化铁皮具有较好的结合力,两者的协同作用造成氧化铁皮难于剥离。因此在1100 ~1150 ℃条件下去除氧化铁皮较为合适。

关键词: 10CrNiCuSi钢, 加热温度, 氧化铁皮, Fe2SiO4-FeO, 剥离性

Abstract: In order to improve the surface roughness of 10CrNiCuSi shipbuilding steel, the oxidation experiment at 1100-1300 ℃ under air condition was carried out in a resistance furnace. The exfoliation of the oxide scales was evaluated by bend tests. And the evolution of oxide scales at different temperature was studied. The results show that the oxidation rate and thickness of oxide layer increase with the increase of heating temperature. The scale of the tested steel is mainly composed of Fe2O3, Fe3O4, FeO and internal oxide layer, and the internal oxide layer consists of FeNiCu, Fe2SiO4 and FeO phases. The liquid eutectic Fe2SiO4/FeO products have a significant influence on the exfoliation of the oxide scales. At the conditions of 1100 ℃ and 1150 ℃, the Fe2SiO4 phases presented with granular or massive shape are dispersed in the internal FeO phases. The interface between the scale and the matrix is relatively straight and the scale is easily exfoliated. At the conditions of 1200, 1250 and 1300 ℃, the eutectic product of Fe2SiO4-FeO presents an anchor-like morphology, which is pinned to the interface of oxide scale and substrate resulting in rough bonding interface, and the anchor-like FeNiCu phases have a good bonding properties with substrate and the scale. The synergistic effects cause the oxide scale hard to exfoliate. Therefore, it is more appropriate to remove the oxide scales at 1100-1150 ℃.

Key words: 10CrNiCuSi steel, heating temperature, oxide scale, Fe2SiO4-FeO, exfoliation

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