The microstructure and mechanical properties of the B4C/Cu matrix composite fabricated by SPS-HR

Hong sheng Chen, Yu yang Zhang, Hui hui Nie, Jin feng Wang, Wen xian Wang, Jun Zhou, Peng Zhang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Copper matrix composites containing different volume fractions of B4C particles (0–15%) were first fabricated by spark plasma sintering followed by hot rolling in atmospheric environments, then their microstructures, phase compositions, mechanical properties and sintering mechanism were investigated. It was found that B4C particles distributed relatively homogeneously in the copper matrix. Reaction products of CuC8 and B were observed and identified in the composite. Under increasing B4C particle content, the ultimate tensile, yield strength and elongation to fracture of the composites decreased. Failure mode of composites included: (1) the interfacial debonding and (2) the cleavage fracture of copper. Moreover, micro-discharge between the adjacent particles occurred, and its led to local high temperature at the interface.

Original languageEnglish (US)
Pages (from-to)1460-1467
Number of pages8
JournalMaterials Science and Technology (United Kingdom)
Volume34
Issue number12
DOIs
StatePublished - Aug 13 2018

All Science Journal Classification (ASJC) codes

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

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