粉煤灰及SiO_2复合活性剂对LD10钨极氩弧焊接头性能的影响  

Effect of activating flux of fly ash and SiO_2 on welding joint properties of LD10 by TIG technology

作　　者：张勇[1] 姜海峰[1] 安婷婷[1] 代显富[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》2014年第1期104-107,共4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,将粉煤灰、粉煤灰+SiO2作为活性剂涂敷在试件表面,采用TIG方式进行焊接。研究了粉煤灰、粉煤灰+SiO2作为活性剂对焊缝深宽比、微观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,添加粉煤灰、粉煤灰+SiO2活性剂焊件的焊缝硬度和焊接热影响区的硬度均高于常规焊接件。In order to increase the TIG welding efficiency of high strength aluminum alloy, activating flux of fly ash, fly ash and SiO2 was utilized to coat on the surface of LD10 aluminum alloy. The effect of activating flux on the depth-to-width ratio, microstructure and microhardness of joint was studied. The experimental results show that the coating of activating flux of fly ash, fly nsh and SiO2 can increase the width and depth of weld, and the hardness of welding bead and HAZ are higher than that withhout coating activating fiux.

关 键 词：LDIO 粉煤灰 SIO2 活性剂 

分 类 号：TG456.9[金属学及工艺—焊接]