Pressing and Infiltration of Metal Matrix Nanocomposites

The ability to produce metal matrix nanocomposites via pressing and infiltration was validated. Al/TiC nanocomposite was used as the model material. Pressing the powder in a die yielded cylindrical specimens with a green density of 1.98 ± 0.05 g/cm<sup>3</sup>, which was increased to onl...

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Bibliographic Details
Main Authors: Quinton Porter, Xiaochun Li, Chao Ma
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Journal of Manufacturing and Materials Processing
Subjects:
Online Access:https://www.mdpi.com/2504-4494/5/2/54
Description
Summary:The ability to produce metal matrix nanocomposites via pressing and infiltration was validated. Al/TiC nanocomposite was used as the model material. Pressing the powder in a die yielded cylindrical specimens with a green density of 1.98 ± 0.05 g/cm<sup>3</sup>, which was increased to only 2.11 ± 0.12 g/cm<sup>3</sup> by sintering. Direct infiltration of the pressed specimens at 1050 °C for 3.5 h yielded specimens with a density of 3.07 ± 0.08 g/cm<sup>3</sup>, an open porosity of 3.06 ± 1.40%, and an areal void fraction of 8.09 ± 2.67%. The TiC nanoparticles were verified to be well dispersed using energy-dispersive X-ray spectroscopy. The measured hardness of 64 ± 3 HRA makes it a promising material for structural applications in industries such as aerospace and automotive.
ISSN:2504-4494