Mechanical Properties of AlMgB14-xTiB2 Prepared by Field Activated and Pressure Assisted Synthesis

Yang Miao; Wen Liu; Lei Zhuang; Hui Ling Cheng; Qing Sen Meng

doi:10.4028/www.scientific.net/MSF.745-746.652

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HomeMaterials Science ForumMaterials Science Forum Vols. 745-746Mechanical Properties of AlMgB14-xTiB2 Prepared by...

Mechanical Properties of AlMgB_14-xTiB₂ Prepared by Field Activated and Pressure Assisted Synthesis

Abstract:

In this paper, Mechanical alloying (MA) and field activated and pressure assisted synthesis (FAPAS) were used for preparing the ultra-hard, super-abrasive AlMgB₁₄-xTiB₂ composite ceramic. The samples were fabricated at 1500 under a pressure of 60 MPa. The microstructures and compositions of samples were observed and determined by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD). It was indicated that addition of TiB₂ was effective for increasing both quantities. A maximum Vichers hardness of 38.5GPa and a fracture toughness of 3.85MPam^½ of AlMgB₁₄ reinforced with 70 wt.% of TiB₂ were achieved. Abrasion wear tests showed that adding TiB₂ would improve the wearability obviously.

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Periodical:

Materials Science Forum (Volumes 745-746)

Pages:

652-656

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.745-746.652

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Online since:

February 2013

Authors:

Yang Miao, Wen Liu, Lei Zhuang, Hui Ling Cheng, Qing Sen Meng

Keywords:

AlMgB_14-xTiB₂, FAPAS, Mechanical Property, Ultra-Hard Boride

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