摘要
在分析挤压铸造金属基复合材料浸渗条件的基础上，建立了液态金属在短纤维预制件中的浸渗和压力分布模型，计算结果表明：（１）当外加压力不足以使短纤维预制件产生变形之前，其浸渗距离和浸渗前端的压力分别为：Ｘｆ＝１－Ｆ１－Ｖｆ∫ｔ０ｕｄｔ和Ｐｓ＝μｕＫ０１－Ｆ１－Ｖｆ∫ｔ０ｕｄｔ－４Ｖｆ０γｃｏｓθｄｆ（１－Ｖｆ０）（２）当外加压力使短纤维预制件产生变形之后，其浸渗距离和浸渗前端的压力分别为：Ｘｆ＝１－Ｆ１－Ｖｆ∫ｔ１０ｕｄｔ＋∫ｔｔ１ｕ（１－Ｆ）Ｋ（１－Ｖｆ）ｄｔ和Ｐｓ＝μｕＫ０１－Ｆ１－Ｖｆ∫ｔ１０ｕｄｔ＋μｕ∫ｔｔ１ｕ（１－Ｆ）Ｋ（１－Ｖｆ）ｄｔ－４Ｖｆγｃｏｓθｄｆ（１－Ｖｆ）
In the paper,author analyzed carefully the infiltration condition of casting metal matrix composites,then established the model of infiltration and pressure distribution among short fibers filled by liquid metal,the calculation result showed:(1)before compressive deformation of short fibers preform by applied pressure,the infiltration distance and the pressure distribution of molten metal in the infiltrated area are given by: Xf=1-F1-Vf∫t0udt and Ps=μuK0·1-F1-Vf∫t0udt-4Vf0γcosθdf(1-Vf0) (2)after compressive deformation of short fibers preform by applied pressure,the infiltration distance and the pressure distribution of molten metal in the infiltrated area are given by: Xf=1-F1-Vf∫t10udt+∫tt1u(1-F)K(1-Vf)dt;Ps=μuK0·1-F1-Vf∫t10udt+μu∫tt1u(1-F)K(1-Vf)dt-4Vfγcosθdf(1-Vf)
出处
《材料工程》
EI
CAS
CSCD
北大核心
1997年第12期10-12,17,共4页
Journal of Materials Engineering
基金
国家自然科学基金
国家教委博士点基金
金属基复合材料国家重点实验室开放课题
关键词
挤压铸造
短纤维
金属基
复合材料
压力浸渗
squeeze cast short fiber metal matrix composites pressure infiltration
