δ—Al_2O_3短纤维/Al-5.5Mg合金复合材料的微观断裂过程及界面强度

TENSILE FRACTURE PROCESS AND INTERnCIAL STRENGTH ON δ-Al_2O_3 SHORT FIBER/Al-5.5Mg COMPOSITES

用SEM动态拉伸装置观察了δ-Al2O3短纤维增强Al－5．5Mg合金复合材料微观断裂过程，分析了断裂机制，根据动态拉伸结果计算了界面剪切强度.

In site observation of micro-fracture process of 6-Al2O3(sf)/Al-5.5Mg composites was carried out by using SEM. The fracture mechanism was discussed from the experimental results.The intedecial strength was calculated.