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W-Y2O3复合材料和梯度材料的制备及力学性能

Translated title of the contribution: Fabrication and mechanical property of w-y2o3 composites and graded material
  • College of Materials Science and Chemical Engineering, Harbin Engineering University
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

W-Y2O3 composite with the gradient variation of volume content of Y2O3 was fabricated by pressureless sintering process. Phases and microstructure of W-Y2O3 composite were characterized. Fracture mechanism was explored by means of the measured results of mechanical properties and fracture morphology. Distribution of thermal stress in W-Y2O3 graded material during sintering is simulated by finite element method, while feasibility of composition content and structure of each layer are analyzed, then W-Y2O3 graded material is successfully fabricated by this process. The results show that the mechanical properties of W-Y2O3 composite decrease with the increment of volume content of Y2O3, which is mainly contributed to the effects of inherent strength of composed phase, porosity and grain size. Finally, faultless W-Y2O3 graded material with high quality of interface bonding can be fabricated by reasonable design of gradient layers.

Translated title of the contributionFabrication and mechanical property of w-y2o3 composites and graded material
Original languageChinese (Traditional)
Pages (from-to)596-602
Number of pages7
JournalWuji Cailiao Xuebao/Journal of Inorganic Materials
Volume33
Issue number6
DOIs
StatePublished - 1 Jun 2018

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