Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Development of Continuous SiC Fiber Reinforced Magnesium Composites Using Liquid Pressing Process

액상가압성형 공정을 이용한 SiC 연속섬유 강화 마그네슘 복합재료 개발

  • Cho, Seungchan (Composites Research Division, Korea Institute of Materials Science) ;
  • Lee, Donghyun (Composites Research Division, Korea Institute of Materials Science) ;
  • Lee, Young-Hwan (Composites Research Division, Korea Institute of Materials Science) ;
  • Shin, Sangmin (Composites Research Division, Korea Institute of Materials Science) ;
  • Ko, Sungmin (Composites Research Division, Korea Institute of Materials Science) ;
  • Kim, Junghwan (Composites Research Division, Korea Institute of Materials Science) ;
  • Kim, Yangdo (School of Materials Science and Engineering, Pusan National University) ;
  • Lee, Sang-Kwan (Composites Research Division, Korea Institute of Materials Science) ;
  • Lee, Sang-Bok (Composites Research Division, Korea Institute of Materials Science)
  • Received : 2020.10.12
  • Accepted : 2020.10.25
  • Published : 2020.10.31
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Abstract

In this study, the possibility of manufacturing a magnesium (Mg) composites reinforced with continuous silicon carbide (SiC) fibers was examined using a liquid pressing process. We fabricated uniformly dispersed SiC fiberAZ91 composites using a liquid phase pressing process. Furthermore, the precipitates were controlled through heat treatment. As a continuous Mg2Si phase was formed at the interface between the SiC fiber and the AZ91 matrix alloy, the interfacial bonding strength was improved. The tensile strength at room temperature of the prepared composite was 479 MPa, showing excellent mechanical properties.

본 연구에서는 액상가압성형 공정을 이용하여 SiC 연속섬유가 강화된 마그네슘 복합재료의 제조 가능성을 검토하였다. 액상가압성형 공정을 이용하여 SiC 섬유가 균일 분산된 AZ91 복합재료를 제조하였으며 열처리를 통하여 석출상을 제어하였다. SiC 섬유와 기지합금의 계면에 연속적인 Mg2Si상이 형성되면서 계면 결합력이 향상되었고, 제조된 복합재료의 상온 인장강도는 479 MPa로 우수한 기계적 특성을 나타내었다.

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References

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