TiO_2和SiO_2活性剂对LD10钨极氩弧焊接头性能的影响  

Effect of TiO_2 and SiO_2 active flux on welding joint properties of LD10 by TIG technology

作　　者：张勇[1] 姜海峰[1] 綦秀玲[1] 

机构地区：[1]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000

出　　处：《兵器材料科学与工程》2013年第1期65-67,共3页Ordnance Material Science and Engineering

摘　　要：为提高高强铝合金钨极氩弧焊的效率,以LD10铝合金为研究对象,将TiO2,SiO2作为活性剂涂敷在试件表面,采用TIG方式进行焊接。研究TiO2,SiO2作为活性剂对焊缝深宽比、显微组织和接头显微硬度的影响。结果表明:活性剂的涂敷均会使焊缝熔宽增加、熔深加大;添加SiO2活性剂焊件的焊缝和热影响区硬度低于常规焊接件,添加TiO2活性剂焊件的焊缝硬度低于常规焊接件,但TiO2活性剂焊件焊接热影响区的硬度高于常规焊接件。In order to increase the welding efficiency of high strength aluminum, the workpieces of LD10 were joined by the technology of TIG with TiO2 and SiO2 as active flux. The effect of active flux on depth-to-width ratio, microstructure and microhardness of the joint was studied. The experimental results show that the width and depth can be increased with active flux. The hardness of welding bead and HAZ with SiO2 active flux is lower than that without SiO2. The hardness of welding bead with TiO2 is still lower than that without TiO2, but the hardness of HAZ is higher than that without TiO2.

关 键 词：LD10 TIO2 SIO2 深宽比 硬度 

分 类 号：TG456.9[金属学及工艺—焊接]