Abstract
The structure and chemical composition of the local melting zones that form during explosion welding of orthorhombic titanium aluminide with commercial-purity titanium near a wavy interface between them are studied. The Rayleigh number is estimated to propose a possible mechanism for the formation of a concentric structure in these zones. Titanium aluminide fragments are detected near the zone boundaries. It is assumed that the fragmentation in the transition zone is caused by the division of a material into loosely coupled microvolumes under the action of a strong external action in a time comparable with the explosion time. Outside the transition zone, fragmentation occurs via a traditional way beginning from dislocation accumulation. Both processes occur in titanium aluminide and only one process (banded structure formation) takes place in titanium.
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Original Russian Text © B.A. Grinberg, M.A. Ivanov, V.V. Rybin, S.V. Kuz’min, V.I. Lysak, O.A. Elkina, A.M. Patselov, O.V. Antonova, A.V. Inozemtsev, 2010, published in Deformatsiya i Razrushenie Materialov, 2010, No. 12, pp. 27–35.
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Grinberg, B.A., Ivanov, M.A., Rybin, V.V. et al. Structure of the welding zone between titanium and orthorhombic titanium aluminide for explosion welding: II. Local melting zones. Russ. Metall. 2011, 1016–1025 (2011). https://doi.org/10.1134/S0036029511100053
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DOI: https://doi.org/10.1134/S0036029511100053