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SiO2,TiO2混合物作为活性剂涂敷在试件表面,采用TIG方式进行焊接.研究SiO2,TiO2混合物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:SiO2,TiO2混合物活性剂的涂敷均会使焊缝熔宽增加、熔深加大;添加活性剂焊件的焊缝晶粒较常规焊缝粗大,其焊缝硬度低于常规焊接件.
In the process of joining workpieces by the technology of TIG,active flux of SiO2 and TiO2 mixture was utilized to increase the welding efficiency of LD10 high strength aluminum. In order to study the effect of active flux on depth?to?width ratio, microstructure of joint,metallographic observation and hardness test were carried out. The experimental results show that the width and depth are increased,while the hardness of weding seam with SiO2 and TiO2 mixture as active flux is lower than that of normal welding seam,the joint microstructure with active flux is coarser than that of normal welding.
参考文献
| [1] | 刘红卫,陈康华,刘允中.强化固溶对7075铝合金组织与性能的影响[J].金属热处理,2000(09):16-17. |
| [2] | 王洪,付高峰,孙继红,李兴杰,姜澜.超高强铝合金研究进展[J].材料导报,2006(02):58-60. |
| [3] | 黄良余.铝及其合金的晶粒细化简述[J].特种铸造及有色合金,1997(03):41-43. |
| [4] | Liu S D;Zhang X M;Chen M A .Effect of Zr content on quench sensitivity of A1ZnMgCu alloys[J].Transactions of Nonferrous Metals Society of China,2007,17:787-792. |
| [5] | Mondal C;Mukhopadhyay A K;Raghu T et al.Tensile properties of peak aged 7055 aluminum alloy extrusions[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2007,455(03):673. |
| [6] | Kanghua Chen;Hongwei Liu;Zhuo Zhang .The improvement of constituent dissolution and mechanical properties of 7055 aluminum alloy by stepped heat treatments[J].Journal of Materials Processing Technology,2003(1):190-196. |
| [7] | 毛杰;唐普洪 .时效对AI-Zn-Mg-Cu合金Mg晶界偏析及性能的影响[J].材料热处理技术,2010,27(02):45-47. |
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