纳米TiC颗粒对车用6063铝合金焊接性能的影响  

Effect of Ti C Nanoparticles on Welding Properties of 6063 Aluminum Alloy Used of Car

作　　者：李雷[1] 刘蒙恩[1] 白莉[2] 王怀建[1] 

机构地区：[1]重庆工业职业技术学院车辆工程学院,重庆401120 [2]重庆工业职业技术学院机械工程学院,重庆401120

出　　处：《热加工工艺》2016年第11期76-78,82,共4页Hot Working Technology

摘　　要：采用含有纳米Ti C颗粒4041铝基焊料,对车用6063铝合金进行TIG焊,利用光学显微镜、SEM、硬度计和万能拉伸实验机对接头性能进行了研究。结果表明,焊料中的纳米Ti C颗粒可以显著降低焊缝处的晶粒大小;接头抗拉强度随焊料中Ti C含量的增加而增加,当Ti C含量为5 wt%时接头强度达到310 MPa,断口为塑性断裂形貌。The effect of Ti C nanoparticles in 4041 Al-based filler on the microstructure and mechanical properties of TIG welded 6063 Al alloy joint was investigated by using optical microscopy, scanning microscopy observation, micro-hardness and tensile tests. The results show that the addition of Ti C nanoparticles can effectively refine the grain size in the welded seam. The tensile strength of the joint increases with increasing amount of Ti C particles and tensile strength of 310 MPa is obtained with 5wt.% Ti C added in the filler. Fracture surface shows ductile rupture.

关 键 词：铝合金 焊接性能 纳米颗粒 TI C 

分 类 号：TG457.14[金属学及工艺—焊接]