Study on the dynamic recrystallization behavior of Ti-alloy Ti-10V-2Fe-3V in β processing via experiment and simulation

D. L. OuYang, Mingwang Fu, S. Q. Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

41 Citations (Scopus)

Abstract

Hot compression tests of titanium alloy Ti-10V-2Fe-3V were performed at the temperature of 1098-1423K and the strain rate of 0.001-1s-1to examine the influence of deformation conditions over the dynamic recrystallization (DRX) of the Ti-alloy. The experimental results show the occurrence of DRX with the bulging nucleation mechanism as a predominant mechanism in hot deformation of the alloy in β-phase field. Partial grain refinement related to the incompletely DRX happened even after a large strain of 1.6. The simulation based on the established DRX kinetics model and a cellular automaton simulation approach coupled with the metallurgical principles of dynamical recrystallization and the practical parameters was conducted to predict the microstructure evolution with the completely DRX. The effects of strain rate and temperature on the steady state strain, volume fraction of DRX and the steady state grain size in DRX process were studied, and a satisfactory agreement between the predicted and experimental results was obtained. The research thus provides an approach to investigate and predict the DRX and microstructure evolution of Ti-alloys in hot working process.
Original languageEnglish
Pages (from-to)26-34
Number of pages9
JournalMaterials Science and Engineering A
Volume619
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • Cellular automaton
  • Dynamic recrystallization
  • Finite element simulation
  • Microstructure evolution
  • Ti-10V-2Fe-3V alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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