TRIP钢合金体系热力学参数的评估

郑伟森 已出版文章查询
郑伟森
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wszheng@shu.edu.cn
1 何燕霖 已出版文章查询
何燕霖
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1 朱娜琼 已出版文章查询
朱娜琼
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1 李麟 已出版文章查询
李麟
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1上海大学材料科学与工程学院,上海200072


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相变点的计算对预测TRIP钢的相变行为,有效进行成分优选与工艺控制至关重要,其计算结果的准确性取决于热力学数据库.目前涉及TRIP钢合金体系的热力学参数较多,取自不同参考文献建立了两个TRIP钢多元合金系(Fe-C-Mn-Si-Al-Ni)的热力学数据库,并应用Thermo-Calc软件对5种实验钢的相变点与(α+γ)两相区相分数进行了计算.同时采用膨胀仪与定量金相分析技术进行实验测定.结果表明,FEDAC数据库仅适合预测低铝TRIP钢的A3温度而FEDAL数据库不仅适合预测低铝TRIP钢780℃以下的相分数,而且对高铝TRIP钢两相区相分数的预测也较为准确.

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语种: 中文   

基金国家自然科学基金项目(50971137、50934011)

关键词热力学参数 TRIP钢 相分数 相变点 Fe-Al-C体系


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