航空材料学报2011，Vol.31Issue(1)：36-40,5.DOI:10.3969/j.issn.1005-5053.2011.1.007
TC4钛合金超音频直流脉冲TIG焊
TC4 Titanium Alloy Welded by Ultra-sonic Pulse TIG Welding
许海鹰 1齐铂金 2张伟 2赵海涛1
作者信息
- 1. 北京航空制造工程研究所,高能束流加工技术重点实验室,北京,100024
- 2. 北京航空航天大学,机械工程及自动化学院,北京,100191
- 折叠
摘要
Abstract
Firstly, the traits about ultra-sonic pulse TIG welding technology had been introduced in this paper. The disciplinarian of peak current and pulse frequency influence to arc welding plasmas flow force had been analyzed especially. Several TC4 titanium alloy workpieces had been welded by ultra-sonic pulse TIG welding and conventional direct current TIG welding technology respectively. In order to detect blowhole faults in these weld beads, X-radial check-up had been introduced. By these detection results, several of process mechanisms to make blows overflow fleetly, which aroused by the ultra-sonic pulse TIG welding, had been analyzed. These welding joints without faults had been made tensile properties detection samples. A series of tensile properties data had been obtained.By means of scanning electron microscope, the relationship between microstructure and these strength performances had been studied.In comparison with conventional direct current TIG welding technology, blowhole faults has been reduced by introducing 60kHz and 80kHz ultra-sonic pulse TIG welding technology. It also shows that welding joints specific elongation is improved obviously with the pulse current frequency being increased.关键词
超音频直流脉冲/TIG焊/钛合金/气孔/焊接接头Key words
ultra-sonic pulse/ TIG welding/ titanium alloy/ blowhole/ welding joint分类
金属材料引用本文复制引用
许海鹰,齐铂金,张伟,赵海涛..TC4钛合金超音频直流脉冲TIG焊[J].航空材料学报,2011,31(1):36-40,5.
