喷射成形Al_(93.5)Cu_3Fe_(1.5)Ni1Ce_(0.5)Zr_(0.5)合金的微观组织特征

CHARACTERISTIC MICROSTRUCTURES OF SPRAY FORMED Al 93.5 Cu 3Fe 1.5 Ni 1Ce 0.5 Zr 0.5 ALLOY

研究了喷射成形Ａｌ９３ ．５Ｃｕ３Ｆｅ１ ．５ Ｎｉ１Ｃｅ０ ．５Ｚｒ０ ．５ 合金快速凝固组织特征及弥散强化相的形成。结果表明， 喷射成形快速凝固技术显著地细化了合金组织； 预成形毛坯具有３ 种典型的组织特征， 其中主要弥散强化相为具有立方晶体结构、晶格常数ａ ＝ ０ ．８５２ ｎｍ 的Ａｌ１７Ｃｕ４ＦｅＮｉＣｅ

The characteristic microstructures and formation of dispersoid of spray formed Al 93.5 Cu 3Fe 1.5 Ni 1Ce 0.5 Zr 0.5 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 Al 17 Cu 4FeNiCe phase with complicated cubic crystal structure whose lattice constant keeps 0.852 nm.