微碳低合金深冲双相钢的再结晶规律

doi:10.13251/j.issn.0254-6051.2020.04.009

金属热处理 ›› 2020, Vol. 45 ›› Issue (4): 45-50.DOI: 10.13251/j.issn.0254-6051.2020.04.009

微碳低合金深冲双相钢的再结晶规律

周刘涛¹, 潘红波^2,3, 潘烁², 吴结文²

1. 安徽工业大学冶金工程学院, 安徽马鞍山 243002;
2. 安徽工业大学冶金减排与资源综合利用教育部重点实验室, 安徽马鞍山 243002;
3. 安徽工业大学冶金工程与资源综合利用安徽省重点实验室, 安徽马鞍山 243002

收稿日期:2019-09-23 出版日期:2020-04-25 发布日期:2020-05-08
通讯作者: 潘红波,教授,博士,E-mail:panhb718@163.com
作者简介:周刘涛(1993—),男,硕士,主要从事钢铁新材料及成形技术研究,E-mail:zhou98663@foxmail.com
基金资助:
国家自然科学基金(51774006,U1860105);安徽省自然科学基金面上项目(1708085ME116);安徽省重大专项(18030901085)

Recrystallization law of micro-carbon low alloy deep drawing dual phase steel

Zhou Liutao¹, Pan Hongbo^2,3, Pan Shuo², Wu Jiewen²

1. School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan Anhui 243002, China;
2. Key Laboratory of Metallurgical Emission Reduction and Resources Recycling of Ministry of Education, Anhui University of Technology, Ma'anshan Anhui 243002, China;
3. Anhui Province Key Laboratory of Metallurgical Engineering and Resources Recycling, Ma'anshan Anhui 243002, China

Received:2019-09-23 Online:2020-04-25 Published:2020-05-08

摘要/Abstract

摘要： 研究了一种微碳低合金钢在罩式退火过程中的再结晶组织演变和再结晶动力学规律,根据Johnson-Mell理论和Arrhenius再结晶激活能的计算,建立了再结晶体积分数与退火温度和等温时间的热力学模型及退火温度与完全再结晶所需时间的动力模型。结果表明,两个模型相互得到验证,并都揭示了随退火温度的增加,再结晶孕育期和完成时间缩短的规律;在同一温度下,随保温时间的延长,再结晶体积分数增加直至完全再结晶。另外,发现在Ac₁附近退火时,存在再结晶与相变的竞争现象,当保温时间较短时以再结晶过程为主,而长时间保温时则以相变过程为主。

关键词: 再结晶, 激活能, 退火温度, 保温时间

Abstract: Recrystallization microstructure evolution and recrystallization kinetics of a micro-carbon low alloy steel during batch annealing were studied. According to the calculation of the Johnson-Mell theory and the Arrhenius recrystallization activation energy, the thermodynamic model of the relationship between recrystallization volume fraction and annealing temperature and isothermal time was established, and so was the dynamic model of the relationship between the annealing temperature and the time required for complete recrystallization. The results show that the two models verify each other and the recrystallization incubation period and completion time are shortened with the increase of annealing temperature. At the same temperature, the volume fraction of recrystallization increases until complete recrystallization with the increase of holding time. In addition, it is found that there is a competition phenomenon between recrystallization and phase transformation when annealing temperature is near Ac₁. The recrystallization process is the main phenomenon as the holding time is short while phase transformation process has a perfectly advantage as the holding time is long.

Key words: recrystallization, activation energy, annealing temperature, holding time

中图分类号:

TG142.2

周刘涛, 潘红波, 潘烁, 吴结文. 微碳低合金深冲双相钢的再结晶规律[J]. 金属热处理, 2020, 45(4): 45-50.

Zhou Liutao, Pan Hongbo, Pan Shuo, Wu Jiewen. Recrystallization law of micro-carbon low alloy deep drawing dual phase steel[J]. Heat Treatment of Metals, 2020, 45(4): 45-50.

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微碳低合金深冲双相钢的再结晶规律

Recrystallization law of micro-carbon low alloy deep drawing dual phase steel

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