Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Influence of Particle Size Distribution on Green and Sintered Properties of Fe-Cr-Mo Prealloy Powder

Fe-Cr-Mo 합금 분말의 성형 및 소결특성에 미치는 입도분포 영향

  • Kim, Ki-Bong (Korea Institute of Materials Science (KIMS)) ;
  • Yang, Sangsun (Korea Institute of Materials Science (KIMS)) ;
  • Kim, Yong-Jin (Korea Institute of Materials Science (KIMS)) ;
  • Park, Yong-Ho (Department of Materials Science and Engineering, Pusan National University)
  • 김기봉 (한국기계연구원 부설 재료연구소) ;
  • 양상선 (한국기계연구원 부설 재료연구소) ;
  • 김용진 (한국기계연구원 부설 재료연구소) ;
  • 박용호 (부산대학교 재료공학과)
  • Received : 2013.01.11
  • Accepted : 2013.02.25
  • Published : 2013.02.28
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Abstract

The effect of particle size distribution on green and sintered properties of Fe-Cr-Mo prealloy powder was investigated in this study. For the study, prealloyed Fe-Cr-Mo powders with different particle sizes were mixed as various ratios and cold compacted at various pressure and sintered at $1250^{\circ}C$ for 30 min, $90%N_2+10%H_2$ atmosphere in the continuous sintering furnace. The results shows that the powders with large particle size distribution have high compressibility and low ejection force. However the green strength are much less than those with small particle size distribution. Tensile prperties of the sintered specimes with large particles size also have high strength and elongation.

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