短纤维定向增强金属基复合材料的制备及性能研究

Study on the Fabrication and Properties of Metal Matrix Composite with Short Fibres Aligned Distributing

研究了短纤维定向增强金属基复合材料（ＳＦＭＭＣ） 的制备工艺，获得了硅酸铝短纤维定向增强的Ａｌ２Ｏ３ＳｉＯ２（ｓｆ）／ＺＬ１０９ 复合材料。力学性能测试结果表明，短纤维在金属基体中呈平行状态分布，能够有效地发挥对基体的增强作用，从而使该类复合材料的力学性能得到显著提高。另外，利用ＳＥＭ 对Ａｌ２Ｏ３ＳｉＯ２（ｓｆ）／ＺＬ１０９ 复合材料的拉伸断口以及纤维的损伤机理进行了分析。

In this paper, the fabrication process of Al 2O 3 SiO 2(sf)/ZL109 composite was studied, and a method to fabricate metal matrix composite with short fibres aligned distributing was obtained. The results of mechanical properties test show that the short fibres parallel distributing in the metal matrix of SFMMC can make the strengthening effect of the fibres more efficient, and so enhance the mechanical properties of the composite. Scanning Electron Microscopy(SEM) was used to analyze the tension fracture and the damage behaviors of the fibres.