Mg/Al复合材料成型及其组织性能研究

Forming Process of Mg/Al Composites and Its Microstructure and Property

选取Mg-8.5Al-0.5Zn-0.2Mn合金、ZAlSi12合金和中间隔板1060合金为原料,采用铸造成型的方法制备出了Mg/Al层状复合材料,研究了中间隔板厚度对复合材料组织和力学性能的影响。结果表明,复合材料中Mg-8.5Al-0.5Zn-0.2Mn合金、ZAlSi12合金和中间1060合金层结合紧密、在界面处无明显缝隙或者孔洞存在;在过渡层与Mg-8.5Al-0.5Zn-0.2Mn合金和ZAlSi12合金界面处都存在一定的硬度梯度,且中间过渡层硬度都要低于Mg-8.5Al-0.5Zn-0.2Mn合金和ZAlSi12合金母材;中间隔板厚度对Mg/Al复合材料的强度影响较小,而断后伸长率随着中间隔板厚度的增加而逐渐降低。

Selecting Mg-8.5Al-0.5Zn-0.2Mn alloy, ZA1Sil2 alloy and the middle partition board 1060 alloy as raw material, using casting forming method to prepared the Mg/Al layered composite, the influence of middle clapboard thickness on microstructure and mechanical properties of composite materials was studied. The results show that the interface between the Mg-8.5Al-0.5Zn-0.2Mn alloy, ZAISil2 alloy and the middle partition board 1060 alloy have no obvious cracks or voids existence. There are certain hardness gradient in the transition layer and Mg-8.5Al-0.5Zn-0.2Mn alloy or ZAISil2 alloy, and the hardness of the intermediate transition layer are lower than that of the Mg-8.5Al-0.5Zn-0.2Mn alloy and ZA1Sil2 alloy. The thickness of intermediate diaphragm has little effect on the strength of Mg/Al composite, and the elongation decreases with the increase of the thickness of intermediate diaphragm.