(Al63Cu25Fe12)p/A356 aluminum alloy composites prepared by spray co-deposition
(1.上海市上海交通大学高温材料及测试重点实验室，教育部
2.Key Laboratory for High Temperature Materials and Tests of Ministry of Education,Shanghai Jiao Tong University, Shanghai 200030, China)
2.Key Laboratory for High Temperature Materials and Tests of Ministry of Education,Shanghai Jiao Tong University, Shanghai 200030, China)
Abstract: A novel Al-based composite material (Al63Cu25Fe12)p/A356 was prepared by spray co-deposition. It is revealed that the reinforcement of Al63Cu25Fe12 quasicrystalline particles disperses uniformly in the composite with small crystalline grain structure of about 10 μm. The reaction between the Al63Cu25Fe12 quasicrystalline particle and the matrix metal is constrained or depressed because of the high cooling velocity in the process of spray co-deposition. Compared with the composite reinforced by non-continuous ceramics particle, the aging harden behavior of the composites of (Al63Cu25Fe12)p/A356 has outstanding characteristics with less time on aging peak happening and with higher hardening rate. The mechanical properties of the composites evidently enhance except plastic strain.
Key words: spray co-deposition; Al63Cu25Fe12 quasicrystalline particle; A356 aluminum alloy; metal matrix composites; mechanical behavior