CHEN Yuhua, GONG Ziying, ZHANG Timing, et al.Experimental Design and Research on Hydrogen Diffusion in FSW Joints of Titanium/Aluminum Dissimilar Metals[J].Electric Welding Machine, 2022, 52(6): 99-104.
CHEN Yuhua, GONG Ziying, ZHANG Timing, et al.Experimental Design and Research on Hydrogen Diffusion in FSW Joints of Titanium/Aluminum Dissimilar Metals[J].Electric Welding Machine, 2022, 52(6): 99-104. DOI： 10.7512/j.issn.1001-2303.2022.06.12.
Experimental Design and Research on Hydrogen Diffusion in FSW Joints of Titanium/Aluminum Dissimilar Metals
Titanium/aluminum dissimilar metals welding structures with respective advantage of the two materials has broad application prospects in aerospace, automobile manufacturing and other fields. However, these dissimilar metals are prone to hydrogen diffusion caused by galvanic corrosion in wet environments such as sea, resulting in hydrogen embrittlement of titanium alloys. A reconstruction method of welded joints of dissimilar metals based on the concept of wire beam electrode is electrode, which can realize the coupling test between various sub-regions of dissimilar metal welded joints. Subsequently, a hydrogen diffusion behavior monitoring device is designed. Through experimental verification, the parameters such as hydrogen diffusion coefficient and adsorbed hydrogen concentration of hydrogen in metals are obtained, which lays a foundation for revealing the environmental hydrogen embrittlement of dissimilar metals welded structures. The hydrogen permeation test method for dissimilar metal welded joints proposed in this paper can be extended to detect the hydrogen diffusion behavior of dissimilar metal welded joints such as aluminum / steel and magnesium / steel, which provides a theoretical guidance for evaluating the effect of hydrogen embrittlement in galvanic corrosion, and makes up for the deficiency that the existing methods can only study the anodic dissolution behavior.
electrochemical testgalvanic corrosionhydrogen diffusionTi/Al dissimilar material connectionfriction stir welding
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