LF21铝合金等通道转角挤压后的组织性能研究  

Study on microstructure and properties of LF21 aluminum alloy after equal channel angular pressing

作　　者：罗军明[1] 邓莉萍[1] 万润根[1] 

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《兵器材料科学与工程》2008年第3期8-10,共3页Ordnance Material Science and Engineering

基　　金：江西省材料科学与工程研究中心基金(No.ZX200401006)

摘　　要：采用自行设计的ECAP模具成功地将LF21铝合金组织超细化,并对其组织、性能进行研究。结果表明,挤压3道次后,得到均匀、细小的等轴超细晶,其平均晶粒尺寸为0.4～0.6μm,挤压后材料的硬度明显上升,并趋于稳定。The LF21 alloy with ultra-fine grain was prepared by using the self-developed die of equal channel angular pressing （ECAP） ,and microstructure and properties were investigated. The result shows that ultra-fined and equiazed grains with the grain size of about 0.4～0.6μm can be achieved after 3 passes of ECAP,and the hardness of material increases obviously during first 3 passes of ECAP, after that the hardness is steady.

关 键 词：ECAP 超细晶 LF21铝合金 硬度 

分 类 号：TG146.2[一般工业技术—材料科学与工程]