短纤维增强铝基复合材料的制备及热膨胀  

Fabrication and Thermal Expansion of Aluminum-Matrix Composites with Short Fiber

作　　者：喻学斌[1] 徐耕[1] 张国定[1] 吴人洁[1] 

机构地区：[1]中山大学,上海交通大学

出　　处：《机械工程材料》1996年第2期6-8,共3页Materials For Mechanical Engineering

基　　金：香港中山大学高等学术研究中心基金

摘　　要：详细叙述了碳短纤维增强铝基复合材料制备过程，测定了复合材料（ｘ－ｙ）面和Ｚ向热膨胀曲线和热膨胀系数。发现短纤维增强铝基复合材料（ｘ－ｙ）面和Ｚ向热膨胀有一些差异，其大小同制备增强体预制件时施加的压力和纤维本身的弹性模量有一定的关系。文章认为碳短纤维发生定向排布是导致（ｘ－ｙ）面和Ｚ向热膨胀差异的主要原因。The fabrication process of aluminum-matrix composites with short fiber was described in detail.The thermal expansion in(x-y) plane and z-direction was measured.It was found that the thermal expansion in (x-y) plane differed from that in z-direction,and the difference was dependent on pressure on preform and carbon fiber modulus of elasticity.Short carbon fibers rearrangement was considered as the main reason.

关 键 词：复合材料 铸造 热膨胀 短纤维 碳纤维 铝基 

分 类 号：TB333[一般工业技术—材料科学与工程]