Microstructures and mechanical properties of porosity-graded pure titanium compacts

Ik Hyun Oh, Haruhiko Segawa, Naoyuki Nomura, Shuji Hanada

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Microstructures and mechanical properties of porosity-graded Ti compacts were investigated in this study. To fabricate the porosity-graded compacts. Ti powders with three different particle sizes, 65, 189 and 374 μm were prepared by the plasma rotating electrode process (PREP) and the gas atomization process, and these powders were sintered with and without applied stress. Porosity and pore size of porosity-graded Ti compacts decrease significantly with decreasing initial powder size and by applying stress. The most porous layer (374 μm) is severely deformed in compression tests compared to other layers. The compressive strength of porosity graded-compacts is found to be in fairly good agreement with the strength of most porous layer. Bend strength of compact sintered at 1223 K and 1 MPa (223.3 MPa) shows a higher value than that of human bone (156.9 MPa).

Original languageEnglish
Pages (from-to)657-660
Number of pages4
JournalMaterials Transactions
Volume44
Issue number4
DOIs
Publication statusPublished - 2003 Apr

Keywords

  • 0.2% proof strength
  • Bend strength
  • Pore size
  • Porosity
  • Porosity graded
  • Titanium powder sintering

ASJC Scopus subject areas

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

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