| 均匀等轴细晶金属超塑性本构关系 |
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| 引用本文： | 金泉林.均匀等轴细晶金属超塑性本构关系[J].力学学报,1993,25(5):560-568. |
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| 作者姓名： | 金泉林 |
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| 作者单位： | 清华大学工程力学系，100084 |
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| 摘 要： | 本文根据超塑变形机理的金属学研究结果,应用细观力学方法建立了包括三种变形机制的均匀等轴细晶超塑性本构关系。该本构关系能解释超塑拉伸实验中观察到的基本实验现象:晶粒度、应变率对σ～、m～曲线形态的影响。
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| 关 键 词： | 超塑性 本构关系 金属 等轴细晶 |
THE CONSTITUTIVE RELATION OF SUPERPLASTICITY OF METAL WITH UNIFORM EQUIAXED FINE GRAIN |
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| Jin Quanlin.THE CONSTITUTIVE RELATION OF SUPERPLASTICITY OF METAL WITH UNIFORM EQUIAXED FINE GRAIN[J].chinese journal of theoretical and applied mechanics,1993,25(5):560-568. |
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| Authors: | Jin Quanlin |
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| Abstract: | Based on the metallographical research results for the mechanism of super-plastic deformation, a costitutive relation of superplasticity of metal with uniform equiaxed fine grain is developed here by using the method of micro-cell model. The three micro-mechanism of superplastic deformation are included in the constitutive relation. An analysis of basic experimental phenomina of superplastic deformation, such as the influences of grain size and strain rate on stress-strain rate curve and strain rate sensitivity index-strain rate curve, is presented by using the constitutive relation. |
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| Keywords: | superplasticity constitutive relation micro-cell model |
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