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.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
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 )
关键词
铸造
铝基
复合材料
凝固过程
cast aluminum matrix composite, solidification process
