| Ti-6Al-4V钛合金超音频脉冲TIG焊 |
| |
| 引用本文： | 周水亮,赵海涛,齐铂金. Ti-6Al-4V钛合金超音频脉冲TIG焊[J]. 焊接学报, 2010, 31(10): 50-52 |
| |
| 作者姓名： | 周水亮 赵海涛 齐铂金 |
| |
| 作者单位： | 北京航空制造工程研究所,航空连接技术航空科技重点实验室,北京,100024;北京航空航天大学,材料工程及自动化学院,北京,100191 |
| |
| 摘 要： | 进行了Ti-6Al-4V钛合金超音频脉冲氩弧焊(U-TIG)与传统TIG焊,利用X射线探伤检测接头质量,金相显微镜和SEM观察接头组织和断口,利用万能试验机测试接头拉伸性能.结果表明,U-TIG焊能减少焊缝气孔;随着加入脉冲频率的增加,U-TIG焊焊缝组织细化、等轴化,当脉冲频率为45kHz时,晶粒细化效果最好;随着脉冲频率的提高,接头抗拉强度、屈服强度和断后伸长率均有所提高;常规TIG与U-TIG焊接头断口均为准解理断裂机制,但U-TIG断口枝晶破坏痕迹已不明显.
|
| 关 键 词： | 超音频脉冲TIG焊 常规TIG焊 Ti-6Al-4V钛合金 |
| 收稿时间： | 2009-05-25 |
Ultra-sonic pulse tungsten inert-gas arc welding of Ti-6Al-4V alloy |
| |
| ZHOU Shuiliang,ZHAO Haitao and QI Bojin. Ultra-sonic pulse tungsten inert-gas arc welding of Ti-6Al-4V alloy[J]. Transactions of The China Welding Institution, 2010, 31(10): 50-52 |
| |
| Authors: | ZHOU Shuiliang ZHAO Haitao QI Bojin |
| |
| Affiliation: | Aeronautical Key Laboratory for Aviation Joining Technology, Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China,Aeronautical Key Laboratory for Aviation Joining Technology, Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China and School of Mechanical Engineering and Automation, Beijing University of Aeronautics & Astronautics, Beijing 100191, China |
| |
| Abstract: | Ti-6Al-4V alloy was welded by conventional tungsten inert-gas arc welding(TIG) and ultra-sonic pulse TIG welding(U-TIG) respectively.The microstructure of the joint was analyzed by means of optical microscope,scanning electron microscope and X-ray diffraction to study the relationship between the macro-properties and the microstructure of the joint.The results show that U-TIG welding can reduce pores of joint.With the increment of pulse frequency,the microstructure becomes finer and finer and is inclined to equiaxed crystal;while pulse frequency is 45 kHz,the effect of grain refinement is the best.Moreover,the properties of joint by U-TIG welding are improved compared with that of conventional TIG.The tensile fractures of the joints welded by TIG and U-TIG all present the character of quai-cleavage crack,but the cellular dendrite depredation is not observed obviously in U-TIG joint. |
| |
| Keywords: | ultra-sonic pulse TIG welding conventional TIG welding Ti-6Al-4V titanium alloy |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《焊接学报》浏览原始摘要信息 |
|
点击此处可从《焊接学报》下载免费的PDF全文 |
|
