C_f/Mg复合材料异形件成形装置设计与实验研究  

Design of forming device for complex C_f/ Mg composite parts and experimental research

作　　者：畅志远 齐乐华[1] 关俊涛[1] 周计明[1] 马玉钦[1] 

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《材料科学与工艺》2014年第1期36-41,共6页Materials Science and Technology

基　　金：国家自然科学基金资助项目(50972121;51275417);西北工业大学博士论文创新基金资助项目(CX201227)

摘　　要：为实现Cf／Mg复合材料异形件的近净成形，在分析金属基复合材料液态浸渗制备技术的基础上，提出了真空压力浸渗一液固挤压制备Cf／Mg复合材料新工艺，并设计了相应的成形装置。利用设计的装置开展2D碳毡增强镁基复合材料异形件的制备研究。在熔炼温度为760～820℃，预制体预热温度为570～610℃，浸渗气压0．5MPa和挤压载荷10～30MPa等工艺参数下，成功制备出Cf／Mg复合材料异形制件。对复合材料制件进行宏观尺寸测量及扫描电镜（SEM）观察发现，制件外形完整，与设计一致；制件内部组织致密、纤维分布均匀；预制体在制备过程中没有发生明显的变形和破坏。To achieve near net forming of complex Cf/Mg composite parts, liquid-solid extrusion following vacuum pressure infiltration process was proposed based on analysis of liquid infiltration preparation technology, and relevant forming device was developed by which 2D carbon fiber felt reinforced magnesium matrix composite complex parts were fabricated. The parameters were as follow： melting temperature of 760-820℃, preheat temperature of 570-610 ℃, infiltration air pressure of 0. 5 MPa and extrusion pressure of 10 -30 MPa. The shape of the complex parts is complete and consistent with the design, the composite material was dense and the carbon fibers were uniformly distributed in the composite.

关 键 词：复合材料 碳纤维 异形件 真空压力浸渗 液固挤压 微观组织 

分 类 号：TB33[一般工业技术—材料科学与工程]