碳含量对超低碳含钛冷轧搪瓷钢性能的影响

doi:10.11901/1005.3093.2016.447

材料研究学报

2017, Vol. 31

Issue (12): 887-893 DOI: 10.11901/1005.3093.2016.447

研究论文

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碳含量对超低碳含钛冷轧搪瓷钢性能的影响

董福涛¹(

), 薛飞², 杜林秀³, 刘相华³

1 华北理工大学冶金与能源学院唐山 063009
2 华北理工大学电气工程学院唐山 063009
3 东北大学轧制技术与连轧自动化国家重点实验室沈阳 110819

Influence of Carbon Content on Properties of an Ultra-Low Carbon Ti-Bearing Steel for Enameling

Futao DONG¹(

), Fei XUE², Linxiu DU³, Xianghua LIU³

1 College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063009, China
2 College of Electrical Engineering, North China University of Science and Technology, Tangshan 063009, China
3 State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China

引用本文:

董福涛, 薛飞, 杜林秀, 刘相华. 碳含量对超低碳含钛冷轧搪瓷钢性能的影响[J]. 材料研究学报, 2017, 31(12): 887-893.
Futao DONG, Fei XUE, Linxiu DU, Xianghua LIU. Influence of Carbon Content on Properties of an Ultra-Low Carbon Ti-Bearing Steel for Enameling[J]. Chinese Journal of Materials Research, 2017, 31(12): 887-893.

全文: PDF(6831 KB) HTML

摘要:

使用透射电子显微镜(TEM)、电子背散射衍射(EBSD)检测和电化学氢渗透等手段研究了碳含量对超低碳搪瓷钢微观组织、退火板织构和氢渗透行为的影响。结果表明:随着碳含量的提高超低碳搪瓷钢的强度提高而n值的变化不大,断后伸长率和r值都呈减小的趋势;与r值相对应,退火板的γ织构随着碳含量的提高逐渐减弱。实验钢的氢扩散系数D_L随着碳含量的提高而减小,碳含量低于0.004%时钢板的D_L低于临界值,不能保证搪瓷板的抗鳞爆性能。

关键词 ：金属材料, 搪瓷钢, 析出相, 织构, 抗鳞爆性能

Abstract：

The effect of carbon content on microstructure, texture and hydrogen permeation behavior of an ultra-low carbon Ti-bearing steel for enameling was investigated by means of transmission electron microscope (TEM), electron backscattered diffraction (EBSD) test and electrochemical hydrogen permeation experiment. It was found that the strength of the annealed steel sheets increases with the increasing carbon content, but little difference for the n value; the elongation and r value show a trend of decrease with the increase of carbon content; corresponding to the r value, the γ-fiber texture of the annealed steel sheets was weakened gradually with the increase of carbon content. The hydrogen diffusion coefficient, D_L decreases with the increasing of carbon content, when carbon content below 0.004%, D_L is lower than the critical value, thereby the fish-scaling resistance for the steel sheet cannot be guaranteed for the enameling process.

Key words： metallic materials enamel steel precipitate texture fish-scale resistance

收稿日期: 2016-11-30

ZTFLH:

TG142

基金资助:国家自然科学基金(51501056),河北省自然科学基金(E2016209341),河北省教育厅项目(BJ2014031),唐山市科技计划(14130243B、15130202C),华北理工大学培育基金(JP201510)

作者简介:

作者简介董福涛,男,1985年生

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https://www.cjmr.org/CN/10.11901/1005.3093.2016.447 或 https://www.cjmr.org/CN/Y2017/V31/I12/887

图1 连续退火工艺曲线及参数

表1 实验钢的化学成分

图2 不同碳含量实验钢的退火板金相组织

图3 Steel-3实验钢退火板析出相的扫描形貌及相应的EDS能谱分析

图4 Steel-3实验钢退火板中析出相的透射形貌及相应的EDS能谱分析

图5 不同碳含量实验钢退火板的轧制纵向室温拉伸应力-应变曲线及强度

图6 不同碳含量实验钢退火板的n值、r值和断后伸长率A50

图7 实验钢退火板的φ2 = 0~90°取向密度函数截面图(ODFs)

图8 退火板的室温氢滞后时间tL和氢扩散系数DL

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