搅拌摩擦增材制造2024-T6铝合金增材区性能分析  

Performance analysis of 2024-T6 aluminum alloy additive zone in stirred friction additive manufacturing

作　　者：盛浩 汪洪峰 王建彬 SHENG Hao;WANG Hongfeng;WANG Jianbin(School of Mechanical and Automotive Engineering,Anhui Polytechnic University,Wuhu 241000,China;College of Mechanical and Electrical Engineering,Huangshan University,Huangshan 245000,China)

机构地区：[1]安徽工程大学机械与汽车工程学院,安徽芜湖241000 [2]黄山学院机电工程学院,安徽黄山245000

出　　处：《兵器材料科学与工程》2024年第6期69-74,共6页Ordnance Material Science and Engineering

基　　金：安徽省仿真设计与现代制造工程技术研究中心(2016GC060);黄山学院搅拌(线性、惯性)摩擦连接重点实验室(kypt201804)。

摘　　要：用搅拌摩擦增材制造技术对2024-T6铝合金进行增材试验,观察增材区显微组织,结合显微硬度对增材区摩擦磨损性能进行分析,探索搅拌头行进速度对增材区性能的影响规律。结果表明:当搅拌头旋转速度为1000 r/min,行进速度为150~250 mm/min时,增材区成形良好,无明显缺陷;各参数下试样晶粒得到细化,增材区晶粒尺寸沿增材厚度方向逐渐减小,显微硬度沿增材厚度方向逐渐增大;随着搅拌头行进速度增大,试样显微硬度先增后减,同时摩擦磨损性能先变好后变差,当行进速度为200 mm/min时,显微硬度和摩擦磨损性能最佳。The additive test of 2024-T6 aluminum alloy was carried out with friction stir additive manufacturing technology,and the microstructure of the additive zone was observed.The friction and wear properties of the additive zone were analyzed with the combination of microhardness,and the influence of the traveling speed of the mixing head on the properties of the additive zone was explored.The results show that when the rotating speed of the mixing head is 1000 r/min and the traveling speed is 150-250 mm/min,the forming of the additive area is good without obvious defects.The grain size in the additive zone decreases gradually along the direction of the additive thickness,and the microhardness increases gradually along the direction of the additive thickness.With the increase of the traveling speed of the mixing head,the microhardness of the sample increases first and then decreases,and the friction and wear properties of the sample become better first and then worse.When the traveling speed is 200 mm/min,the microhardness and friction and wear properties are the best.

关 键 词：搅拌摩擦增材制造 铝合金 显微组织 显微硬度 摩擦磨损性能 

分 类 号：TG406[金属学及工艺—焊接]