### 抄録

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.

元の言語 | English |
---|---|

ページ（範囲） | 515-521 |

ページ数 | 7 |

ジャーナル | Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy |

巻 | 51 |

発行部数 | 7 |

出版物ステータス | Published - 2004 7 |

外部発表 | Yes |

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### ASJC Scopus subject areas

- Mechanical Engineering
- Metals and Alloys

### これを引用

*Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy*,

*51*(7), 515-521.

**Poisson's ratio of sintered materials for structural machine parts.** / Hirose, Norimitsu; Asami, Junichi; Fujiki, Akira; Oouchi, Kazuya.

研究成果: Article

*Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy*, 巻. 51, 番号 7, pp. 515-521.

}

TY - JOUR

T1 - Poisson's ratio of sintered materials for structural machine parts

AU - Hirose, Norimitsu

AU - Asami, Junichi

AU - Fujiki, Akira

AU - Oouchi, Kazuya

PY - 2004/7

Y1 - 2004/7

N2 - 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.

AB - 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.

KW - P/M Machine Part

KW - Poisson's Ratio

KW - Porosity

KW - Shear Modulus

KW - Young's Modulus

UR - http://www.scopus.com/inward/record.url?scp=5144233622&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=5144233622&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:5144233622

VL - 51

SP - 515

EP - 521

JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

SN - 0532-8799

IS - 7

ER -