| GCr15钢奥氏体化过程组织转变的动力学模型 |
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| 引用本文： | 关建辉,陈其伟,朱国辉.GCr15钢奥氏体化过程组织转变的动力学模型[J].安徽工业大学学报,2012(2):125-128. |
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| 作者姓名： | 关建辉 陈其伟 朱国辉 |
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| 作者单位： | 安徽工业大学材料科学与工程学院 |
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| 基金项目： | 安徽工业大学研究生创新基金项目(2010007) |
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| 摘 要： | 根据扩散和相变动力学的基本理论,采用定量金相法研究GCr15钢的奥氏体化过程。分析奥氏体化后未溶碳化物体积分数和颗粒尺寸与奥氏体化加热温度及保温时间之间的关系,建立奥氏体化后剩余碳化物体积分数和碳化物平均粒径的数学模型。计算和分析结果表明：模拟曲线与实验数据基本符合;奥氏体化温度越高,保温时间越长,剩余碳化物体积分数越小,碳化物平均粒径也越小。该模型能够预测一定奥氏体化条件下剩余碳化物体积分数和平均粒径。
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| 关 键 词： | GCr15钢 奥氏体化 动力学模型 |
Dynamic Models of Structural Change in GCr15 Steel during Austenitizing Process |
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| GUAN Jian-hui,CHEN Qi-wei,ZHU Guo-hui.Dynamic Models of Structural Change in GCr15 Steel during Austenitizing Process[J].Journal of Anhui University of Technology,2012(2):125-128. |
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| Authors: | GUAN Jian-hui CHEN Qi-wei ZHU Guo-hui |
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| Affiliation: | (School of Materials Science and Engineering,Anhui University of Technology,Ma’anshan 243002,China) |
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| Abstract: | According to the basic theory of diffusion and phase transformation kinetics,austenitizing process of GCr15 steel was studied with method of quantitative metallography.Relationships between volume fraction average particle size of undissolved carbide and austenitizing temperature,holding time were analyzed.Mathematical models of volume fraction and average particle size of the undissolved carbide were established.Calculation and analysis results show that simulated curves coincide well with experimental data.The higher austenitizing temperature and the longer holding time,the less volume fraction of the undissolved carbides and the smaller average carbide particle size.The models can forecast the residual volume fraction and the average particle size under certain austenizing condition. |
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| Keywords: | GCr15 steel austenitizing dynamic model |
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