Effect of Ultrasound on the Interface Morphology and Strength of Ti/Al Alloy Joints Produced by Friction Stir Welding

被引：7

作者：

Ermakova, S. A. ^{[1
]}

Eliseev, A. A. ^{[1
]}

Kolubaev, E. A. ^{[1
]}

Ermakov, D. V. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Strength Phys & Mat Sci, Siberian Branch, Tomsk 634055, Russia

[2] Natl Res Tomsk Polytech Univ, Tomsk 634050, Russia

来源：

PHYSICAL MESOMECHANICS | 2023年 / 26卷 / 01期

关键词：

friction stir welding; titanium alloy; aluminum alloy; mechanical properties; ultrasonic assistance; MICROSTRUCTURAL CHARACTERIZATION; MECHANICAL-PROPERTIES; TITANIUM; ALUMINUM; VARIABLES; EVOLUTION; BEHAVIOR;

D O I：

10.1134/S1029959923010113

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The interface formation process was investigated in bimetallic joints of commercially pure titanium alloy and 5056 aluminum alloy produced by friction stir welding, including with ultrasonic assistance. Lap welding was performed with the titanium sheet on top of the aluminum one. Macrostructural geometric characteristics were analyzed such as weld width, plunge depth, the total cross-sectional area of defects, and the complexity of the interface between dissimilar layers. It was shown that the application of ultrasound during welding promotes better stirring of titanium and aluminum in the joint and makes their interface more complex, due to which the weld strength usually increases. This effect at low axial load can outweigh the antifriction effect. Experiments showed that ultrasonic-assisted friction stir welding provides the joint strength up to 87% of the aluminum alloy strength.

引用

页码：100 / 106

页数：7

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