| ZG0Crl3Ni4Mo不锈钢铸件凝固相变过程的数值模拟 |
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| 引用本文： | 孙立武,许庆彦,柳百成.ZG0Crl3Ni4Mo不锈钢铸件凝固相变过程的数值模拟[J].金属学报,2003,39(4):387-394. |
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| 作者姓名： | 孙立武 许庆彦 柳百成 |
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| 作者单位： | 清华大学机械工程系，清华大学机械工程系，清华大学机械工程系 北京 100084，北京 100084，北京 100084 |
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| 基金项目： | 国家重点基础研究发展规划资助项目G200067208—3 |
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| 摘 要： | 结合相图分析了ZG0Crl3Ni4Mo(质量分数，％)不锈钢铸件凝固相变过程，提出了适合于数值模拟的物理和数学模型，分别模拟了该材质二维和三维的相变过程．为验证数值计算结果，设计并浇注了两种类型的大型试件，用金相显微镜及扫描电镜观察了铸态下微观组织形态，测定了奥氏体晶粒大小、奥氏体晶粒内马氏体板条束个数和马氏体板条间距．数值模拟结果和实验结果进行了对比，进一步从实验和模拟计算两个方面阐明了ZG0Crl3Ni4Mo不锈钢铸件凝固时的相变过程．
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| 关 键 词： | 不锈钢 相变 微观组织 数值模拟 铸件 凝固 |
| 文章编号： | 0412-1961(2003)04-0387-08 |
| 修稿时间： | 2002年5月27日 |
NUMERICAL SIMULATION OF PHASE TRANSFORMATION OF ZGOCrl3Ni4Mo STAINLESS STEEL CASTING |
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| SUN Libin,XU Qingyan,LIU Baicheng.NUMERICAL SIMULATION OF PHASE TRANSFORMATION OF ZGOCrl3Ni4Mo STAINLESS STEEL CASTING[J].Acta Metallurgica Sinica,2003,39(4):387-394. |
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| Authors: | SUN Libin XU Qingyan LIU Baicheng |
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| Affiliation: | SUN Libin,XU Qingyan,LIU Baicheng
Department of Mechanical Engineering,Tsinghua University,Beijing 100084
Correspondent: SUN Libin,Tel: |
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| Abstract: | To study the as-cast microstructure of ZGOCrl3Ni4Mo stainless steel, the physical and mathematical models of phase transformation of ZGOCrl3Ni4Mo were established based on multi-component alloy phase diagrams. The models simulated the phase transformation in 2D and 3D. Two kinds of large sample castings were cast for experimental verification of simulation results. Then microstructure morphologies were observed by using optical microscope and SEM. The grain size of austenite, the number of martensite in austenite grains and the spacing of the lath martensite were measured. The simulation results were compared with experiments and they are in agreement. As a result, the phase transformation process of stainless steel during solidification were studied by both experiment and simulation. |
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| Keywords: | stainless steel phase transformation microstructure numerical simulation |
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