Influence of thermomechanical aging on microstructure and mechanical properties of 2519A aluminum alloy  

作　　者：王会敏 夏长清 雷攀 王志伟 

机构地区：[1]School of Materials Science and Engineering,Central South University

出　　处：《Journal of Central South University》2011年第5期1349-1353,共5页中南大学学报（英文版）

基　　金：Project(2005CB623706) supported by the National Basic Research Program of China

摘　　要：The influence of thermomechanical aging on microstructure and mechanical properties of 2519A aluminum alloy was investigated by means of microhardness test,tensile test,optical microscopy (OM) and transmission electron microscopy (TEM).The results show that 50% cold rolling deformation prior to aging is beneficial since it promotes a more homogeneous distribution of the precipitation phase and reduces the number of precipitation phase on the grain boundaries,and thus shrinks the total volume of precipitation-free zones at grain and sub-grain boundaries.As a result,the tensile properties of 2519A aluminum alloy have been significantly improved.The influence of thermomechanical aging on microstructure and mechanical properties of 2519A aluminum alloy was investigated by means of microhardness test, tensile test, optical microscopy （OM） and transmission electron microscopy （TEM）. The results show that 50% cold rolling deformation prior to aging is beneficial since it promotes a more homogeneous distribution of the precipitation phase and reduces the number of precipitation phase on the grain boundaries, and thus shrinks the total volume of precipitation-free zones at grain and sub-grain boundaries. As a result, the tensile properties of 2519A aluminum alloy have been significantly improved.

关 键 词：pre-aging deformation precipitation hardening tensile properties aluminum alloys 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TQ330.14[金属学及工艺—金属材料]