한국해양공학회:학술대회논문집 (Proceedings of the Korea Committee for Ocean Resources and Engineering Conference)

한국해양공학회 (Korean Society of Ocean Engineers)
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$Al_{18}B_4O_{33}$휘스커 강화 금속기 복합재료의 파괴인성에 관한 연구

A Study on Fracture Toughness of Metal Matrix Composites Reinforced with $Al_{18}B_4O_{33}$

  • 박성호 (경상대학교 대학원) ;
  • 최용범 (경상대학교 대학원) ;
  • 박원조 (경상대학교 기계항공공학부) ;
  • 허선철 (경상대학교 기계항공공학부) ;
  • 윤한기 (동의대학교 기계산업 시스템 공학부)
  • Park, Sung-Ho (School of Mechanical and Aerospace Engineering Kyeongsang National University) ;
  • Choi, Yong-Bum (School of Mechanical and Aerospace Engineering Kyeongsang National University) ;
  • Park, Won-Jo (School of graduate Engineering Kyeongsang National University) ;
  • Huh, Sung-Chul (School of graduate Engineering Kyeongsang National University) ;
  • Yun, Han-Gi (Dept of Mechanical Engineering, National University Dong-Eui)
  • 발행 : 2002.10.25
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초록

In recent years, the study of metal matrix composite has increased specially, aluminum alloy, research and development are briskly progress to find new metal matrix composite. this study is following the this purpose; This study is used metal matrix composite that was produced by matrix, AC4CH. and reinforcement $A_{18}B_4O_{33}$ metal matrix composite to add $Al_2O_3,\;TiO_2$ for strengthen of binding together among the Whisker. Each Metal matrix composite is produced using the squeeze casting method. Fracture tounghness test was in accordance with the provisions of ASTM E399; Specimen was produced half-size CT specimen W=25mm, B=12.5mm, Cross head speed 0.05mm/min in room temperature. The plane strain fracture toughness $K_{IC}$ is $8.7MPa-m^{0.5}$ for $Al_{18}B_4O_{33}$/AC4CH., $9.28MPa-m^{0.5}$ for $Al_{18}B_4O_{33}$/AC4CH added $TiO_2$. and $Al_2O_3$ but AC4CH alloy was violated the critical stipulated by ASTM standard for a valid measurement of $K_{IC}$. In case of, it was performed $I_{IC}$ test instead of $K_{IC}$ based on ASTM E 1820

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