A study of the temperature field during ultrasonic-assisted friction-stir welding

被引：36
作者：
Lai Ruilin [1 ]
He Diqiu [1 ,2 ]
Liu Luocheng [1 ]
Ye Shaoyong [1 ]
Yang Kunyu [1 ]
机构：
[1] Cent S Univ, State Key Lab High Performance Complex Mfg, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, Light Alloy Res Inst, Changsha 410083, Hunan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2014年 / 73卷 / 1-4期
关键词：
Ultrasonic-assisted friction-stir welding; Temperature field; Ultrasonic vibration; Micrographs; COUPLED THERMOMECHANICAL MODEL; FLOW;
D O I：
10.1007/s00170-014-5813-8
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Ultrasonic-assisted friction-stir welding is a new solid-state metal welding technology, based on friction-stir welding, in which weld performance is improved through application of ultrasound during welding. In this study, a model for the temperature field in 1.8 mm 2024 aluminum alloy is built based on computational fluid dynamics and elastic-plastic mechanics theory. Result show the impact of the ultrasound's vibrations on the temperature field is less obvious at lower welding speeds. However, at higher welding speeds, it can provide the additional heat to keep sufficient welding temperature. The numerical results are compared with optical micrographs in order to validate the numerical models. Good agreement is obtained.
引用
收藏
页码：321 / 327
页数：7
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