Effects of post weld enhanced-solution on the microstructure and mechanical properties of 2519A aluminum alloy welded joints
The effects of enhanced-solution plus aging treatment on the microstructures and mechanical properties of 2519A aluminum alloy welded joints were investigated by optical microscope, mechanical test, scanning electron microscope (SEM) and transmission electron microscope (TEM).The results show that the heat-affected zone(HAZ) is a soft zone due to over-aging caused by heat input during welding.After enhanced-solid solution plus aging treatment, the soft zone disappears, and fine strengthened precipitates emerge in weld zone and HAZ.The 4h→535℃/2.5h enhanced-solution can increase the final solution temperature without the formation of overheated microstructure, and improve the solution of second phase, then more fine strengthened precipitates can be attained during aging treatment, so the hardness and tensile properties of the welded joints can be further increased.
2519A aluminum alloy enhanced-solution microstructure mechanical properties
HUANG Hao LI Song Wei ZHANG Fen Ping LIU Xiao Wei LI Zheng Yong
Jiang Lu Electromechanical Technology (Group) Limited company, Xiangtan 411201, China
国内会议
长沙
英文
436-441
2016-11-11（万方平台首次上网日期，不代表论文的发表时间）