Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Compressive Deformation Behavior of Al-10Si-5Fe-1Zr Powder Alloys Consolidated by Spark Plasma Sintering Process

Spark Plasma Sintering법에 의해 예비 성형된 Al-10Si-5Fe-1Zr 분말합금의 고온 압축변형 거동

  • Park, Sang-Choon (Division of Materials Science and Engineering, Inha University) ;
  • Kim, Mok-Soon (Division of Materials Science and Engineering, Inha University) ;
  • Kim, Kyung-Taek (Eco Materials & Processing Department, Korea Institute of Industrial Technology) ;
  • Shin, Seung-Young (Eco Materials & Processing Department, Korea Institute of Industrial Technology) ;
  • Lee, Jeong-Keun (R&D Center, Dong Yang Piston Co. Ltd.) ;
  • Ryu, Kwan-Ho (R&D Center, Dong Yang Piston Co. Ltd.)
  • 박상춘 (인하대학교 신소재공학부) ;
  • 김목순 (인하대학교 신소재공학부) ;
  • 김경택 (한국생산기술연구원 에코공정연구부) ;
  • 신승용 (한국생산기술연구원 에코공정연구부) ;
  • 이정근 ((주)동양피스톤 연구소) ;
  • 류관호 ((주)동양피스톤 연구소)
  • Received : 2011.05.12
  • Published : 2011.11.25
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Abstract

Compressive deformation behavior of Al-10Si-5Fe-1Zr (wt%) alloy preform fabricated by SPS(spark plasma sintering) of gas atomized powder was investigated in the temperature range from 380 to $480^{\circ}C$ and at strain rates from $1.0{\times}10^{-3}$ to $1.0{\times}10^{0}s^{-1}$. Stress-strain curves showed a peak stress (${\sigma}_p$) during initial stage of deformation, followed by a steady state flow at all temperatures and strain rates tested. The (${\sigma}_p$) decreased with both increase in temperature and decrease in strain rate. Nearly full densification was found to occur in the compressively deformed specimens irrespective of test condition. TEM observation revealed a restricted grain growth during steady state flow.

Keywords

Acknowledgement

Grant : 고성능 엔진 파워셀 부품 모듈 제조기술 개발

Supported by : 지식경제부

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