Shock-Wave Synthesis of Intermetallic Compounds Ti3Al, TiAl Analysis of Heterophase Structure Formation

E.V. Shorokhov; B.A. Greenberg; T.S. Boyarshinova; S.V. Sudareva; V.I. Buzanov; O.V. Antonova; E.V. Panova

doi:doi:10.1051/jp4:1997304

Numéro		J. Phys. IV France Volume 07, Numéro C3, August 1997 EURODYMAT 1997 - 5th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		C3-7 - C3-12
DOI		https://doi.org/10.1051/jp4:1997304

EURODYMAT 1997 - 5th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading

J. Phys. IV France 07 (1997) C3-7-C3-12
DOI: 10.1051/jp4:1997304

Shock-Wave Synthesis of Intermetallic Compounds Ti₃Al, TiAl Analysis of Heterophase Structure Formation

E.V. Shorokhov¹, B.A. Greenberg², T.S. Boyarshinova², S.V. Sudareva², V.I. Buzanov¹, O.V. Antonova² and E.V. Panova²

¹ Russian Federal Nuclear Centre-VNIITF, PB. 245, Chelyabinsk Region, Snezhinsk 456770, Russia
² Institute of Metal Physics, Ural Division, Russian Academy of Sciences, 18 S. Kovalevskoi str., Ekaterinburg, 620219 Russia

Abstract
The intermetallics have been synthesized from Ti₃Al- and TiAl-composition powders by using the spherical shock waves and the structures was studied. The shock wave was formed by means of the spherical charge of explosive which surrounded a steel ball (capsule of conservation) with the powder mixture inside. It was revealed that the synthesized intermetallics had the increased microhardness as compared with materials obtained by traditional methods. The role of iron particles, injected during the synthesis from the capsule of conservation, in the formation of structure was found out. The existence of a great variety of phases, including metastable and non-equilibrium ones, was shown.

Résumé
Utilisant les ondes sphériques de choc le composé intermétallique à la base des poudres Ti₃Al et TiAl est synthétisé et l'analyse de la structure formée est effectué. L'onde de choc se forme à l'aide de l'explosif sphérique entourant la balle d'acier (capsule de conservation), au centre duquel le mélange pulvérulent est disposé. Il est décelé que le composé intermétallique synthétisé a la dureté accrue en comparaison des matériaux obtenus par les méthodes traditionnelles. Le rôle des particules de fer injectées pendant la synthèse de la capsule de conservation est révelé pour la formation d'une structure. Il fait voir l'existence d'un grand nombre des phases, y compris celles métastables et non equilibrées.