Poisson's ratio of sintered materials for structural machine parts

Norimitsu Hirose, Junichi Asami, Akira Fujiki, Kazuya Oouchi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The relationships between Young's modulus, shear modulus and Poisson's ratio of sintered materials and porosity were investigated for use as practical P/M machine parts. Three types of steel powders were prepared and then compacted, sintered, and heat-treated under various conditions. Porosity had the greatest influence on Young's modulus, shear modulus, and Poisson's ratio. Especially, Poisson's ratio was affected by the pore shape, which depended on the type of powder, sintering temperature and atmosphere, and heat treatment. For the more practical use of powder compositions, there was little influence by the sintering atmosphere on the Poisson's ratio of the sintered and heat-treated materials. For a partially alloyed powder (Fe-4mass%Ni-1.5mass% Cu-0.5mass%Mo)+0.8mass%C powder, Poisson's ratio versus porosity depended only on the sintering temperature at a porosity below 20%. In this case, a simpler approximate equation of Poisson's ratio of the sintered and heat-treated specimen versus porosity was proposed as follows: v = 0.300-0.266P + 0.579P 2 at 1423 K (sintering temperature) or v=0.304-0.264P + 0.548P 2 at 1523 K.

Original languageEnglish
Pages (from-to)515-521
Number of pages7
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume51
Issue number7
DOIs
Publication statusPublished - 2004 Jul

Keywords

  • P/M Machine Part
  • Poisson's Ratio
  • Porosity
  • Shear Modulus
  • Young's Modulus

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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