液固浸渗挤压成形C_(f)/Al复合材料环形薄板件工艺研究  

Liquid-solid Infiltration and Extrusion of Ring-shaped Thin Plate Parts of C_(f)/Al Composites

作　　者：贠康 李小博 周计明[1,2] 齐乐华 YUN Kang;LI Xiaobo;ZHOU Jiming;QI Lehua(School of Mechanical Engineering,Northwestern Polytechnical University,Xi’an 710072;Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials,Xi’an 710072)

机构地区：[1]西北工业大学机电学院,西安710072 [2]陕西省纤维增强轻质复合材料重点实验室,西安710072

出　　处：《特种铸造及有色合金》2024年第10期1297-1301,共5页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(52231004)。

摘　　要：提出一种挤压头与板件截面积之比小于1的复合材料制备工艺方法,对浸渗过程进行了分析,并探究了不同工艺参数对浸渗质量的影响。优选的工艺参数:浇注温度为950℃,预热温度为560℃、挤压压力为35 MPa。采用此参数制备了浸渗良好的环形薄板件。所制备的复合材料密度比基体合金降低了14.8%,抗拉强度为125 MPa,比基体提高了58%。A method for preparing composites with the cross-sectional area ratio of punch to sheet less than 1 was pro⁃posed.The infiltration process was analyzed,and effects of different process parameters on infiltration quality were investigated.The optimized process parameters were presented as follows:pouring temperature of 950℃,preheating temperature of 560℃and extrusion pressure of 35 MPa,which were used to prepare well-impregnated ring-shaped thin sheet.The density of fabricated composites is 14.8%lower than that of the matrix alloy,and the tensile strength is 125 MPa,which is 58%higher than that of the matrix.

关 键 词：液固挤压浸渗 碳纤维铝基复合材料 板件 挤压头 

分 类 号：TB331[一般工业技术—材料科学与工程] TG379[金属学及工艺—金属压力加工]