An Evaluation on Processing of Metal Matrix Composites (Al2O3/AC8A) by Low-Pressure Infiltration

Kelimu Tulugan; Ho Jun Hwang; Hua Wei Rong; Won Jo Park

doi:10.4028/www.scientific.net/AMR.264-265.149

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 264-265An Evaluation on Processing of Metal Matrix...

An Evaluation on Processing of Metal Matrix Composites (Al₂O₃/AC8A) by Low-Pressure Infiltration

Abstract:

At present many researches are about low density and high strength material, Metal Matrix Composite (MMC) is one kind of high performance material which is very popular and can fit that condition very well. In this study, matrix material is Al alloy and Al2O3 short fiber is reinforcement, volume fractions of Al2O3 short fiber is 10, 15 and 20 %. Manufacture by a low-pressure infiltration method. And the performance is evaluated by microstructure observation, porosity ratio and relative density. It is found that the porosity ratio can be effectively adjusted by the infiltration temperatures and the loads of Al2O3 short-fibres, exhibiting a minimum of 2 for 10% loading at 700°C. Meanwhile, the relative density of composites reached to be a maximum of 98% for 15% loading at 700°C. The low porosity ratio and high density of composites are reasonably attributed to the proper processing techniques.

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Periodical:

Advanced Materials Research (Volumes 264-265)

Pages:

149-154

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.264-265.149

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Online since:

June 2011

Authors:

Kelimu Tulugan, Ho Jun Hwang, Hua Wei Rong, Won Jo Park

Keywords:

Low Pressure Infiltration, Metal Matrix Composite (MMC), Porosity, Relative Density

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