先进材料疑固实验室 Coupled eutectic morphology Laboratory of Advanced Materials Solidification Due to their excellent castability and often good composite properties,many casting alloys have compositions same as or close to eutectic compositions with various microstructure. ory ot anced Materd 上浒充通大学 SHANGHAI JIAO TONG UNIVERSITYCoupled eutectic morphology Due to their excellent castability and often good composite properties, many casting alloys have compositions same as or close to eutectic compositions with various microstructure