Formation of structure and mechanical properties of welded joints of titanium-aluminum composites
Keywords:
titanium, composites, intermetalliccompounds, structure, aluminumAbstract
DOI: https://doi.org/10.32820/2079-1747-2019-23-49-57
The article shows that the structure that formed as a result of the liquid-phase diffusion of the layer is dispersed intermetallic inclusions of TiAl3 in the matrix of aluminum-based solid solution. It is shown that the process of diffusion interaction of titanium with liquid aluminum consists of three stages: “initial stage” - low active growth of intermetallic interlayers at the Ti-Al interface; “Growth stage” - intensive formation of dispersed intermetallic TiAl3 particles as a result of reaction at the border with titanium and the growth of an intermetallic layer with a constant for a given temperature TiAl3 content; "Saturation stage" - an increase in the volume content of the TiAl3 phase in the intermetallic layer.
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