Microstructure and Mechanical Properties of AIN Particles Reinforced Magnesium Matrix Composites with In Situ Synthesis Process

Abstract:

In this paper, In Situ AlN particles reinforced magnesium matrix composites were fabricated. The results show that the AlN phases can be In Situ synthesized in AZ91D alloy with the addition of Mg₃N₂. The microstructure and phases of the matrix alloys and the composites were investigated by OM, SEM and XRD. The hardness and mechanical properties of the matrix alloys and the composites were also obtained. Compared with those of the matrix alloy, the grains of composites were refined obviously and the mechanical properties of composites were improved significantly. The microstructural analysis indicates that the AlN particles can act as the heterogeneous nucleation of α-Mg phases in the composites. The strengthening mechanism of the composites with AlN particles was discussed.

• Periodical: Solid State Phenomena (Volume 256)
• Pages: 181-185
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.256.181
• Online since: September 2016
• Authors: Zhao Hui Wang*, Bo Li, Xian Du, Ke Liu, Shu Bo Li, Wen Bo Du
• Keywords: AlN, In Situ Synthesis, Magnesium Matrix Composites, Mechanical Properties, Microstructure

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