| 材料韧脆转移过程的数学模拟和实验标定 |
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| 引用本文： | 钟群鹏,张峥.材料韧脆转移过程的数学模拟和实验标定[J].北京航空航天大学学报,1993(2):16-23. |
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| 作者姓名： | 钟群鹏 张峥 |
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| 作者单位： | 北京航空航天大学材料科学与工程系
(钟群鹏,张峥,李洁),北京航空航天大学材料科学与工程系(田永江) |
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| 摘 要： | 研究了Cr24Al2Si铁素体不锈钢韧脆转移过程的性能-温度曲线的数学模拟,找到了其最佳的韧脆转移数学模型。通过韧脆转移的数学模型,还可以找到能量韧脆转移温度T_C与无塑韧脆转移温度T_(NDT)之间的定量换算关系。 上述关系,不仅可以成为确定韧脆转移温度通用准则,提供一种定量分析的数学方法,而且使韧脆转移曲线转化为韧脆机制转移曲线,从而为建立冷脆断裂机制图奠定了基础。
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| 关 键 词： | 材料 韧脆转移 数学模拟 实验标定 |
MATHEMATICAL SIMULATION AND EXPERIMENTAL MARK OF DUCTILE-BRITTLE TRANSITION PROCESS FOR MATERIALS |
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| Zhong Qunpeng Zhang Zheng Li Jie Tian Yongjiang.MATHEMATICAL SIMULATION AND EXPERIMENTAL MARK OF DUCTILE-BRITTLE TRANSITION PROCESS FOR MATERIALS[J].Journal of Beijing University of Aeronautics and Astronautics,1993(2):16-23. |
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| Authors: | Zhong Qunpeng Zhang Zheng Li Jie Tian Yongjiang |
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| Institution: | Dept. of Mater. Sci. and Eng. |
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| Abstract: | This paper studies the mathematical simulation of the "properties-temperature" curve of ductile-brittle transition process for materials and finds the best mathematical model of ductile-brittle transition. According to the mathematical model,the relation between the energy ductile-brittle transition temperature Tc and nil-ductile transition temperature TNDT is found.These relationships obtained above not only find the common principle for determining the material's ductile-brittle transition temperature and the mathematical method of a quantitative analysis for ductile-brittle transition process, but also find a method to translate the properties transition curves into mechanism transition ones,and the basis to build the mechanism diagram of cold-brittle fracture. |
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| Keywords: | materials ductile-brittle transition mathematical simulation experimental mark |
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