(哈爾濱工業(yè)大學材料科學與工程學院，哈爾濱 150001
哈爾濱汽輪機責任有限公司，哈爾濱 150012)
摘 要: 研究了噴射成形Al93.5Cu3Fe1.5Ni1Ce0.5Zr0.5合金快速凝固組織特征及彌散強化相的形成。結果表明，噴射成形快速凝固技術顯著地細化了合金組織；預成形毛坯具有3 種典型的組織特征，其中主要彌散強化相為具有立方晶體結構、晶格常數(shù)a=0.852 nm 的Al17Cu4FeNiCe相
關鍵字: 快速凝固 噴射成形 高強鋁合金 微觀組織
（College of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
Harbin Steamer Plant Co. Ltd., Harbin 150012, P. R. China）
Abstract:The characteristic microstructures and formation of dispersoid of spray formed Al93.5Cu3Fe1.5Ni1Ce0.5Zr0.5 alloy were investigated. The observation results showed that the microstructures of deposit are fine and homogeneous and there exist three kinds of typical formation mechanisms of microstructures in deposit. The main dispersoid in deposit is AAl17Cu4FeNiCe phase with complicated cubic crystal structure whose lattice constant keeps 0.852 nm.
Key words: rapid solidification; spray forming; high-strengthened aluminium alloy; microstructure
