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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  

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)
Publication Information
Journal of Korea Foundry Society / v.28, no.6, 2008 , pp. 268-272 More about this Journal
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
Squeeze Infiltration; AS52 alloy; Magnesium matrix composite; Aging test; nano-indentation; Microstructure;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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