Influence of technological modes on top surface morphology of Ti-2Al-1.5Mn alloy welds produced by friction stir welding

The article studies the morphology of the top surface of Ti-2Al-1.5Mn alloy welds produced by friction stir welding. The surface morphology directly depends on the nature of mass transfer at welding. The spacing between the transfer layers, fractal dimension of the surface, complexity of the 2D prof...

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Bibliographic Details
Main Author: Eliseev, A. A.
Format: Conference Proceeding
Language:English
Subjects:
Complexity
Fractal geometry
Fractals
Friction stir welding
Mass transfer
Morphology
Roughness
Titanium base alloys
Welded joints
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Summary:The article studies the morphology of the top surface of Ti-2Al-1.5Mn alloy welds produced by friction stir welding. The surface morphology directly depends on the nature of mass transfer at welding. The spacing between the transfer layers, fractal dimension of the surface, complexity of the 2D profile curve and roughness were chosen as characteristics. It was found that the spacing between the transfer layers is load-dependent, which was not previously observed. It was found that the formation of the transfer layer is complex. In particular, a transfer layer may contain up to four peaks. Technological parameters affect the height and number of peaks. The surface complexity can be determined by the fractal dimensionality or the complexity of the 2D profile curve. These methods have shown good agreement. Roughness often depended inversely on surface complexity.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0034108