The Al\-2O\-3 fiber for composite can trigger the twin crystal during the coupled growth of Al Si eutectic,which results in the modification of the eutectic silicon near the fiber.

• 复合材料中的氧化铝纤维在铝硅共晶体的共生生长过程中,可触发孪晶,导致纤维附近的共晶硅呈变质形态。