PSI - Issue 30

E.G. Grigoryev et al. / Procedia Structural Integrity 30 (2020) 33–39 Grigoryev E.G. et al. / Structural Integrity Procedia 00 (2020) 000–000

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Fig. 3. Image of the joint zone of alloys AlMg2.5 + Cu01 obtained by the HVCW.

Fig. 4. Energy spectral analysis of the distribution of chemical elements in the HVCW of the welded joint zone from AlMg2.5 + Cu01 alloys.

Fig. 5. Image of the joint zone of alloys AlMg2.5 + Br63 obtained by HVCW.

Fig. 6. Energy spectral analysis of the distribution of chemical elements during HVC across the welded joint zone from AlMg2.5 + Br63 alloys.

Researchers of DSTU and ISMAN used superhard modes of high voltage electric pulse exposure during consolidation of hafnium carbide powder according to the technological scheme shown in Fig. 1d, by Strizhakov (2019). High-voltage electrical consolidation (HVEC) of the powder material allows localizing the high energy density of the electric discharge current pulse in the zones of interparticle contacts. Intensive heating of the material in the zones of interparticle contacts contributes to the high-speed deformation of the powder material localized in these zones. The concomitant dynamic effect on the powder leads to the formation of a dense structure of the consolidated material while maintaining the initial grain size of the powder material. Samples were obtained by the HVEC method from hafnium carbide powders. Electron microscopic studies of the structure of the obtained hafnium carbide samples were carried out, see Fig.7, and the distribution of the Hf and C elements at the fracture of the sample is presented in Fig. 8.