(1、中南工业大学粉末冶金研究所，粉末冶金国家重点实验室，长沙 410083；
2、东南大学机械工程系，南京 210096)
摘 要: 用TEM对铸态SiCP/Mg(AZ81)复合材料界面进行了研究。结果表明，SiC颗粒与α-Mg界面光滑，无界面化学反应。 Mg17Al12相及Cu5Zn8相能在SiC颗粒表面形核长大， 且它们之间的位向关系为：[1,-1,0,1]SiC‖[1,-1,1]Mg17Al12， (0,1,-1,1)SiC‖(1,1,0)Mg17Al12和[1,0,0]Cu5Zn8‖[2,-1,-1,0]SiC， (0,0,1)Cu5Zn8‖(0,0,0,1)SiC 。
关键字: 铸造 SiCP/Mg(AZ81)复合材料 界面 相向关系
（1.State Key Lab for Powder Metallargy,Central South University of Technology, Changsha 410083 ;
2.Department of Mechanical Engineering, Southeast University, Nanjing 210096）
Abstract:The interface of as-cast SiCP/Mg(AZ81) composite has been studied by TEM. The results showed that SiCP/α-Mg interface is smooth and there is no chemical reaction products at the interface. Mg17Al12 eutectie phase and Cu5Zn8 phase have been found nucleating and growing on the SiC. Their relationships are [1,-1,0,1]SiC‖[1,-1,1]Mg17Al12, (0,1,-1,1)SiC‖(1,1,0)Mg17Al12 and [1,0,0]Cu5Zn8‖[2,-1,-1,0]SiC， (0,0,1)Cu5Zn8‖(0,0,0,1)SiC.
Key words: as-cast SiCP/Mg(AZ81) composite interface orientation relationship
