GCr15钢奥氏体化过程的实验与模型研究

IF 0.6 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Performance and Characterization Pub Date : 2023-09-15 DOI:10.1520/mpc20230011

Hui Wang, Fuyong Su, Zhi Wen

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引用次数: 0

摘要

采用膨胀法研究了GCr15轴承钢均匀化热处理过程中珠光体的奥氏体化过程。详细研究了相变过程中铁素体、渗碳体、奥氏体和残余渗碳体的体积分数与加热温度和加热速率变化的关系。提出了均匀热处理过程中珠光体向奥氏体转变的奥氏体化模型。用hot - calc软件计算了奥氏体与珠光体的界面浓度、相平衡、相变自由能和共析温度。从理论上解释了均匀热处理过程中珠光体向奥氏体转变的实验现象。

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Experimental and Modeling Study on Austenitizing Process of GCr15 Steel

The austenitizing process of pearlite during homogenization heat treatment of GCr15 bearing steel was studied using dilatometry. A detailed study was conducted on the relationship between the volume fraction of ferrite, cementite, austenite, and residual cementite during the phase transformation process and the changes in heating temperature and heating rate. An austenizing model for the transformation of pearlite to austenite during homogenization heat treatment was proposed. The interfacial concentration, phase equilibrium, free energy of transformation, and eutectoid temperature between austenite and pearlite were calculated by Thermo-Calc software. The experimental phenomenon of the transition from pearlite to austenite during homogenizing heat treatment was theoretically explained.

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来源期刊

Materials Performance and Characterization MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

2.20

自引率

9.10%

发文量

期刊介绍： The journal is published continuously in one annual issue online. Papers are published online as they are approved and edited. Special Issues may also be published on specific topics of interest to our readers. Materials Performance and Characterization provides high-quality papers on both the theoretical and practical aspects of the processing, structure, properties, and performance of materials used in: -mechanical -transportation -aerospace -energy and -medical devices. -Materials Covered: (but not limited to) -Metals and alloys -Glass and ceramics -Polymers -Composite materials -Textiles and nanomaterials