Formation of vortices during explosion welding (titanium-orthorhombic titanium aluminide)

Autor: B. A. Greenberg, A. M. Patselov, Mikhail A. Ivanov, I. I. Sidorov, V. V. Rybin, A. V. Inozemtsev, Olga V. Antonova, O. A. Elkina
Rok vydání: 2009
Předmět:
Zdroj: The Physics of Metals and Metallography. 108:353-364
ISSN: 1555-6190
0031-918X
DOI: 10.1134/s0031918x09100056
Popis: The possibility of cladding commercially pure titanium by a plate of orthorhombic titanium aluminide has been investigated. The bimetallic joints of orthorhombic titanium aluminide (Ti-30Al-16Nb-1Zr-1Mo) with commercially pure titanium have been obtained by explosion welding. It has been found that the weld joint investigated had a multilayer structure consisting of a zone of continuous deformation observed in both materials, a zone of titanium recrystallization, and a transition zone near the interface. Wave formation and formation of isolated vortex zones have been observed. It has been found that upon explosion welding the bonding of the surfaces is effected via melting and subsequent mixing (in the zone of vortices) and the transfer of particles of one metal into another with the formation of particle tracks (outside the zone of vortices). A possible scenario of the formation of the vortex zone in the melt with a subsequent eutectic decomposition is proposed. The structure of the vortex zones was found to consist of an ultrafine mixture of α and β grains (both phases are disordered) with the grain size changing in the limits of 50–300 nm. The regions of transition from the vortex zone to the region of continuous deformation of the aluminide and to the recrystallized zone of titanium have been investigated.
Databáze: OpenAIRE
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