Special Issue
  • Development of Continuous SiC Fiber Reinforced Magnesium Composites Using Liquid Pressing Process

  • Seungchan Cho*†, Donghyun Lee*,**, Young-Hwan Lee*,**, Sangmin Shin*,**, Jungmin Ko*, Junghwan Kim*, Yangdo Kim**, Sang-Kwan Lee*, Sang-Bok Lee*†

  • * Composites Research Division, Korea Institute of Materials Science, Changwon, Korea
    **School of Materials Science and Engineering, Pusan National University, Pusan, Korea

  • 액상가압성형 공정을 이용한 SiC 연속섬유 강화 마그네슘 복합재료 개발

  • 조승찬*† · 이동현*,** · 이영환*,** · 신상민*,** · 고성민* · 김정환* · 김양도** · 이상관* · 이상복*†

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 fiber-AZ91 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.


Keywords: 금속복합재료(Metal matrix composite), 마그네슘(Magnesium), 탄화규소 섬유(SiC fiber), 액상가압성형(Liquid pressing process)

This Article

Correspondence to

  • Seungchan Cho, Sang-Bok Lee

  • Composites Research Division, Korea Institute of Materials Science, Changwon, Korea

  • E-mail: sccho@kims.re.kr, leesb@kims.re.kr