铸造铝基复合材料的凝固过程  

Solidification of Cast Aluminum Matrix Composites

作　　者：毕刚[1] 王浩伟[1] 吴人洁[1] 

机构地区：[1]上海交通大学,上海200030

出　　处：《稀有金属材料与工程》2000年第1期4-7,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金!项目 (批准号 :5 963 10 80 )

摘　　要：铝基复合材料中,增强体的加入使金属凝固过程的形核、晶体生长、溶质分配和流体流动行为发生改变,特别是在不同压力和冷却条件下的非平衡凝固状态下。从而对基体组织的形态、二相析出、溶质偏聚、界面反应性、凝固缺陷等产生重要影响,最终影响复合材料的性能。基于此,综述了凝固过程对铝基复合材料组织与性能的作用规律。The physical phenomena of solidification and the mechanical properties of aluminum matrix composites are reviewed.Nucleation and growth of the matrix, solute distribution and fluid flow in the cast aluminum matrix composites are changed by the addition of reinforcers, especially in the case of nonequilibrium solidification under differential pressure and under variation of the cooling conditions. Such changes greatly influence the dendrite structure of matrix, precipitation, solute segregation, interface reactivity, solidification defects etc., and properties of the composites.

关 键 词：铸造 铝基 复合材料 凝固过程 

分 类 号：TB33[一般工业技术—材料科学与工程]