### 抄録

The relationships between Young's modulus, shear modulus and Poission'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 heattreated specimen versus porosity was proposed as follows: v=0.300-0.266P+0.579P2 at 1423K(sintering temperature)or v=0.304-0.264P+0.548P2 at 1523K.

元の言語 | English |
---|---|

ページ（範囲） | 226-232 |

ページ数 | 7 |

ジャーナル | Fenmo Yejin Jishu/Powder Metallurgy Technology |

巻 | 27 |

発行部数 | 3 |

出版物ステータス | Published - 2009 6 |

外部発表 | Yes |

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### ASJC Scopus subject areas

- Metals and Alloys
- Mechanics of Materials

### これを引用

*Fenmo Yejin Jishu/Powder Metallurgy Technology*,

*27*(3), 226-232.

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

研究成果: Article

*Fenmo Yejin Jishu/Powder Metallurgy Technology*, 巻. 27, 番号 3, pp. 226-232.

}

TY - JOUR

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

AU - Norimitsu, Hirose

AU - Junichi, Asami

AU - Fujiki, Akira

AU - Kazuya, Oouchi

PY - 2009/6

Y1 - 2009/6

N2 - The relationships between Young's modulus, shear modulus and Poission'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 heattreated specimen versus porosity was proposed as follows: v=0.300-0.266P+0.579P2 at 1423K(sintering temperature)or v=0.304-0.264P+0.548P2 at 1523K.

AB - The relationships between Young's modulus, shear modulus and Poission'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 heattreated specimen versus porosity was proposed as follows: v=0.300-0.266P+0.579P2 at 1423K(sintering temperature)or v=0.304-0.264P+0.548P2 at 1523K.

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=68049086696&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=68049086696&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:68049086696

VL - 27

SP - 226

EP - 232

JO - Fenmo Yejin Jishu/Powder Metallurgy Technology

JF - Fenmo Yejin Jishu/Powder Metallurgy Technology

SN - 1001-3784

IS - 3

ER -