Effect of cerium/lanthanum addition on microstructure and mechanical properties of Al7075 alloy via mechanical alloying and sintering  

作　　者：R.Pérez-Bustamante A.Reyna-Cruz D.C.Acosta-Pena C.R.Santillán-Rodríguez J.A.Matutes-Aquino F.Pérez-Bustamante M.C.Maldonado-Orozco J.Aguilar-Santillán R.Martínez-Sánchez 

机构地区：[1]Research Center in Advanced Materials(CIMA V),National Laboratory of Nanotechnology,Miguel de Cervantes No.120,C.P.31109,Chihuahua,Chih.,Mexico [2]Faculty of Engineering,Autonomous University of Chihuahua(UACH),Circuito No.1 Nuevo Campus Universitario,C.P.31 125,Chihuahua,Chih.,Mexico [3]Faculty of Chemical Sciences,Autonomous University of Chihuahua(UACH),Circuito No.1 Nuevo Campus Universitario,C.P.31125,Chihuahua,Chih.,Mexico [4]Materials&Tools LLC,4118 E Washington Ct,Gilbert,AZ,USA 85234

出　　处：《Journal of Rare Earths》2016年第4期420-427,共8页稀土学报（英文版）

摘　　要：The effect of the Al-6Ce-3La（ACL） on the microstructural behavior of the Al7075 was investigated. Materials were synthesized by mechanical alloying with variation in the ACL content and milling time. Products were characterized and studied in the as-milled condition and mechanically evaluated after sintering. The synergetic effect of milling time and ACL content in the modified materials led to a reduction in the particle size. Results from electron microscopy showed a homogeneous dispersion of Ce/La phases up to 20 wt.% of ACL content after 10 h of milling. Mechanical evaluation under compressive test showed an improved performance for those alloys reinforced with 0.2 wt.% and 0.5 wt.% of ACL.The effect of the Al-6Ce-3La（ACL） on the microstructural behavior of the Al7075 was investigated. Materials were synthesized by mechanical alloying with variation in the ACL content and milling time. Products were characterized and studied in the as-milled condition and mechanically evaluated after sintering. The synergetic effect of milling time and ACL content in the modified materials led to a reduction in the particle size. Results from electron microscopy showed a homogeneous dispersion of Ce/La phases up to 20 wt.% of ACL content after 10 h of milling. Mechanical evaluation under compressive test showed an improved performance for those alloys reinforced with 0.2 wt.% and 0.5 wt.% of ACL.

关 键 词：mechanical alloying rare earths aluminum microstructure sintering 

分 类 号：TF125.22[冶金工程—粉末冶金]