Stimulation of processes of self-propagating high temperature synthesis in system Ti + Al at low temperatures by influence of γ-quanta

A. V. Sobachkin, M. V. Loginova, A. A. Sitnikov, V. I. Yakovlev, V. Yu Filimonov, A. V. Gradoboev

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

In the present work, the influence of the irradiation with gamma-quanta 60Co upon the structural and phase state of the components of the mechanically activated powder composition of Ti+Al is investigated. The phase composition, structural parameters, and crystallinity are examined by means of X-ray diffractometry. It is found out that the irradiation with gamma-quanta changes the structure of the mechanically activated powder composition. The higher irradiation dose, the higher the structure crystallinity of both components with no change in phase state. At the same time, the parameters of Ti and Al crystal lattices approach to the initial parameters observed before the mechanical activation. The irradiation with gammaquanta leads to decrease of internal stresses in the mechanically activated powder composition while nanocrystallinity of the structure remains unchanged. Using of powder compositions exposed to the irradiation with gamma-quanta for the SH-synthesis helps to increase speed of the reaction, decrease the peak firing temperature and improve homogeneity, as well as the main phase of the produced material is TiAl.

Original languageEnglish
Article number032051
JournalIOP Conference Series: Materials Science and Engineering
Volume327
Issue number3
DOIs
Publication statusPublished - 12 Apr 2018
Event11th International Conference on Mechanical Engineering, Automation and Control Systems, MEACS 2017 - Tomsk, Russian Federation
Duration: 4 Dec 20176 Dec 2017

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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