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基于实际微观组织,建立了视场下的SiC颗粒增强铝基复合材料的胞元模型,并采用商用有限元软件ABAQUS分析研究了不同温度、不同应变速率和不同变形程度条件下材料流变特性,获得了增强颗粒与基体的应力、应变场分布规律,及最大主应力场的变化情况,建立了用于描述 SiC 颗粒增强铝基复合材料流变特性的应力-应变关系曲线,同时以参数 (复合材料流变应力与基体流变应力之比)研究了不同因素(变形温度、变形程度、应变速率)对颗粒增强铝基复合材料变形与强化效果的影响,研究表明:随着变形程度的增加,强化效果呈递增趋势,但温度和应变速率的变化对材料的强化效果影响不显著。
Based on the actual microstructure, the cell model of SiC particle reinforced aluminum matrix composite under field of view was established. The rheological properties of the composite under different temperatures, different strain rates and different deformations were analyzed by commercial finite element software ABAQUS. The stress-strain distribution and the maximum principal stress field are obtained. The stress-strain curve describing the rheological behavior of SiC particle reinforced Al matrix composites is established. At the same time, The effects of different factors (deformation temperature, degree of deformation and strain rate) on the deformation and strengthening effect of particle reinforced aluminum matrix composites were studied. The results show that with the increase of deformation, The strengthening effect showed an increasing trend, but the change of temperature and strain rate had no significant effect on the strengthening effect of the material.