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Vol.48, No.5, 469 ~ 476, 2010
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| Title |
| Analysis of Effective Elastic Modulus and Interfacial Bond Strength of Aluminum Borate Whisker Reinforced Mg Matrix Composite by Using Three Dimensional Unit Cell Model |
| 손재형 Jae Hyoung Son , 이욱진 Wook Jin Lee , 박용하 Yong Ha Park , 박용호 Yong Ho Park , 박익민 Ik Min Park |
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| Abstract |
| In this study, the interfacial bond strength of a squeeze infiltrated Al18B4O33/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 Al18B4O33/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 Al18B4O33/AS52 Mg composites. |
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| Key Words |
| composites, infiltration, interfaces, computer simulation, finite element method |
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