Effect of tension, compression, and shear on the formation of a composite of Ni3Al with refractory inert inclusions

Yu A. Chumakov, A. G. Knyazeva

Research output: Contribution to journalArticlepeer-review

Abstract

The study proposes a model of reaction propagation in a dedicated section of the mixture of Ni and Al with inert filler. The model assumes that in the course of heating and reaction, the melting temperature is not reached, and the reaction takes place in the solid phase, which is possible after preliminary mechanoactivation. The problem was solved numerically. The analysis of the stress–strain state effect formed under tension, compression, and shear in the regimes of the composite synthesis has demonstrated that only uniaxial compression accelerates the reaction. In two other cases, the reaction slows down. The estimation shows that the stresses in the reaction zone are appreciably lower than on the boundary of load application. The largest deformations originate in the vicinity of thermal action. It was demonstrated that the addition of inert particles can cause incomplete transformation of the reagents into reaction products.

Original languageEnglish
Pages (from-to)39-56
Number of pages18
JournalComposites: Mechanics, Computations, Applications
Volume11
Issue number1
DOIs
Publication statusPublished - 2020
Externally publishedYes

Keywords

  • Composite
  • Coupled model
  • Loading conditions
  • Solid-phase synthesis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

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