的微觀組織及界面結構
(哈爾濱工業(yè)大學威海分校， 威海 264209
哈爾濱工業(yè)大學金屬精密熱加工國防科技重點實驗室， 哈爾濱 150001)
摘 要: 采用噴射沉積工藝制備了Al-5.5Cu/TiAl3自生復合材料， 并對該材料的微觀組織及界面結構進行了研究。 觀察表明TiAl3與α-Al基體之間存在(020)Al//(002)TiAl3， [001]Al//[110]TiAl3的位向關系， 力學性能測試結果表明噴射沉積Al-5.5Cu/TiAl3自生復合材料的抗拉強度較鑄態(tài)的抗拉強度提高約12%， 延伸率提高450%， 耐磨性則提高150%。
關鍵字: Al基自生復合材料 微觀組織 界面結構 噴射沉積
Al-5.5Cu/TiAl3 IN SITU COMPOSITES PRODUCED
BY SPRAY DEPOSITION
Chao Fuyang, Jiang Zhuling and Li Qingchun
（Weihai branch, Harbin Institute of Technology, Weihai 264209, P. R. China
National Defense S and T key Lab of Metal Precision Hot Working, Harbin Institute of Technology, Harbin 150001, P. R. China）
Abstract:Al-5.5Cu/TiAl3 in situ composites was produced by spray deposition, and the microstructure and interfacial structure of the materials were analyzed. The observation show that the orientation relationship between TiAl3 and α-Al is [001]Al//[1-10]TiAl3, (020)Al//(002)TiAl3. The mechanical properties of the materials were tested. The results show that the tensile strength of the materials produced by spray deposition is 112% of that produced by cast and the elongation isincreased to 550%, and the wear resistance is increased to about 250%.
Key words: microstructure interfacial structure Al-based composites spray deposition
