【摘要】 根据凝固过程中的守恒原理,建立了铝合金复合材料凝固过程的数学模型.根据所建立的模型对Al2O3f/Al 4 5Cu复合材料进行数值模拟,模拟结果表明:Al2O3短纤维周围有低熔点物质及溶质富集;随冷却速度增大,复合材料基体偏析加剧;随复合材料中纤维体积分数增大,基体中偏析减小.更多还原

【Abstract】 A solidification model of aluminum alloy composites was established according to the law of conservation. The numerical simulation of Al₂O_3f/Al-4.5Cu composite was carried out with the model. The results show that the elements with low melting point and solute are concentrated around Al₂O₃ short fibers. The concentration segregation in the matrix increases with the increase of cooling rate and decreases with the increase of fiber volume fraction.更多还原