Thermal stability and the matrix induced brittleness in a Ti-based bulk metallic glass composite

Jie Bai, Jun Wang, Liyuan Li, Hongchao Kou, Jinshan Li

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Crystallization kinetics and nanocrystalline induced brittleness in an in-situ dendrites reinforced Ti44Zr20Nb12Cu5Be19 bulk metallic glass (BMG) composites were investigated. The activated energy of the present Ti-based metallic glass matrix is obtained to be about 201 KJ/mol. As the annealing temperature rises, the annihilation of free volume is believed to cause the increase of hardness and the decrease of plasticity. Brittle fracture occurs after the precipitation of nanocrystalline, which can be ascribed to the formation of the microcracks in the matrix during deformation.

Original languageEnglish
Pages (from-to)83-88
Number of pages6
JournalMaterials Research
Volume18
DOIs
StatePublished - Nov 2015

Keywords

  • Bulk metallic glass
  • Composite
  • Mechanical properties
  • Thermal stability

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