Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Fatigue and Wear Properties of Semi-Liquid Formed SiCp/AZ91HP Mg Composites

반용융 성형가공한 SiCp/AZ91HP Mg복합재료의 피로 및 내마모 특성

  • Ha, Hong-Soo (Dept. of Metallurgical Eng., Sungkyunkwan Univ., Applied superconductivity project team. KERI) ;
  • Kim, Myoung-Gyun (Dept. of Metallurgical Eng., Sungkyunkwan Univ.) ;
  • Ahn, Sun-Kyu (Dept. of Mechanical Eng., Sungkyunkwan Univ.) ;
  • Lim, Byeong-Soo (Dept. of Mechanical Eng., Sungkyunkwan Univ.) ;
  • Kim, Young-Jig (Dept. of Metallurgical Eng., Sungkyunkwan Univ.)
  • 하홍수 (성균관대학교 금속공학과, 한국전기연구소 초전도응용연구사업팀) ;
  • 김명균 (성균관대학교 금속공학과) ;
  • 안선규 (성균관대학교 기계공학과) ;
  • 임병수 (성균관대학교 기계공학과) ;
  • 김영직 (성균관대학교 금속공학과)
  • Published : 1997.10.20
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Abstract

The effect of size and mass fraction of SiC particulate on the fatigue and wear have been investigated for semi-liquid formed SiCp/AZ91HP Mg composites. In the study, different particulate sizes of 7, 20, $50 {\mu}m$ were prepared with various mass fraction for sample preparation. By tension-tension fatigue tests, whose procedures are standardized in ASTM standard 647E-93, the da/dN vs. ${\Delta}K$ curves were obtained. Also, the crack propagation paths were observed by optical microscope. As a result of wear test, specific wear loss is decreased with increasing mass fraction and particulate size. Specific wear loss of 30 mass% $50 {\mu}m$ SiC reinforced Mg composite is compared to SKD11.

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