Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Analysis of Effective Elastic Modulus and Interfacial Bond Strength of Aluminum Borate Whisker Reinforced Mg Matrix Composite by Using Three Dimensional Unit Cell Model

3차원 Unit Cell 모델을 이용한 알루미늄 보레이트 휘스커 강화 Mg 복합재료의 유효 탄성계수 및 계면강도의 분석

  • Son, Jae Hyoung (Department of Materials Science and Engineering, Pusan National University) ;
  • Lee, Wook Jin (Department of Materials Science and Engineering, Pusan National University) ;
  • Park, Yong Ha (Department of Materials Science and Engineering, Pusan National University) ;
  • Park, Yong Ho (Department of Materials Science and Engineering, Pusan National University) ;
  • Park, Ik Min (Department of Materials Science and Engineering, Pusan National University)
  • Received : 2010.01.15
  • Published : 2010.05.22
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Abstract

In this study, the interfacial bond strength of a squeeze infiltrated $Al_{18}B_{4}O_{33}$/AS52 Mg composite was investigated by using a finite element method. Three types of Mg composites with volume fractions of 15, 25 and 35% were fabricated. Three-dimensional models of the composite were developed by using a unit cell model in order to determine the effective elastic modulus of the metal matrix composite and the interfacial bond strength between the whisker and magnesium matrix. After modeling, numerical results were compared with the experimental tensile test results of $Al_{18}B_{4}O_{33}$/AS52 Mg composites. The results showed that the effective modulus of the composite strongly depended on the interfacial strength between the matrix and reinforcement. Based on the numerical and experimental findings, it was found that the strong interfacial bond was achieved by the interfacial reaction product of 30 nm thick MgO, which led to an improvement in the mechanical properties of the $Al_{18}B_{4}O_{33}$/AS52 Mg composites.

Keywords

Acknowledgement

Supported by : 부산대학교

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