Xiankun Zhang, Xue Wang, Yang Li, Lei Shi, Chuansong Wu
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引用次数: 0
Abstract
The root defect is easy to occur in the conventional friction stir welded (C-FSW) Ti/Al dissimilar joints because of the thermophysical properties of titanium alloy. Double-side friction stir welding (DS-FSW) may be a solution to eliminate root defects. This work performed microstructure analyses of the Al/Ti interface for both C-FSW and DS-FSW joints and comprehensively investigated the effects of root defects. The results show that the mechanical properties of the Al/Ti C-FSW joints are severely weakened by root defects. Tensile strength of the DS-FSW joints was 310.8 MPa, which is 73 MPa high than the C-FSW joints. The DS-FSW process can effectively remove the root defects which offers a novel approach to achieve high-quality joining of Al/Ti dissimilar structures.
期刊介绍：
Science and Technology of Welding and Joining is an international peer-reviewed journal covering both the basic science and applied technology of welding and joining.
Its comprehensive scope encompasses all welding and joining techniques (brazing, soldering, mechanical joining, etc.) and aspects such as characterisation of heat sources, mathematical modelling of transport phenomena, weld pool solidification, phase transformations in weldments, microstructure-property relationships, welding processes, weld sensing, control and automation, neural network applications, and joining of advanced materials, including plastics and composites.
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