Tensile fracture of the SiCw/Al Li composite is in the transgranular dimple type. The fracture mode does not change from transgranular to intergranular with aging time, which always exists in Al Li alloys.

• SiCw/Al－Li复合材料的拉伸断口呈穿晶韧窝状，不存在通常Al－Li合金中因时效引起的断口形貌由穿晶型向沿晶型过渡的现象