Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Effect of Aging on the Interfacial Characteristics of ${Al_{18}}{B_4}{O_{33}}$/AS52 Mg Matrix Composite by Squeeze infiltration

용탕가압침투법으로 제조한 ${Al_{18}}{B_4}{O_{33}}$/AS52 Mg기 복합재료의 계면 특성에 미치는 시효의 영향

  • Park, Yong-Ha (School of Materials Scienceand Engineering, Pusan National University) ;
  • Park, Yong-Ho (School of Materials Scienceand Engineering, Pusan National University) ;
  • Cho, Kyung-Mox (School of Materials Scienceand Engineering, Pusan National University) ;
  • Park, Ik-Min (School of Materials Scienceand Engineering, Pusan National University)
  • Published : 2008.11.20
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Abstract

Interfacial characteristics of aluminum borate whisker reinforced AS52 matrix composite was investigated. Peak hardness of AS52 composite was obtained aging at $170^{\circ}C$ for 15h and the aging process was accelerated by the presence of the aluminium borate whisker. The MgO layer, which was the interfacial reaction product between the reinforcement and the Mg matrix, was produced with 20 nm thickness in as-cast condition. As the aging time increased, the thickness of the interfacial reaction layer increased to 50 nm in peak aged condition. The nano-indentation test results indicated that the strength of interface was improved by the aging but over-aging degraded the reinforcement and decreased the interfacial strength which resulted in the decrease of overall composite strength.

Keywords

References

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