Mechanical Properties and Microstructure of PM Ti-Si<sub>3</sub>N<sub>4</sub>Discontinuous Fibre Composite

Dougherty, Troy; Xu, Ying; Hanizan, Ainaa

doi:10.1002/9781119274896.ch86

Cited by 1 publication

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References 13 publications

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“…The remaining 20% is Si 3 N 4 particulate. A full analysis of the fibres has been previously reported by the authors [23]. The surface area of the fibres was previously reported as 4.04 m 2 /g [24] while the surface area of Alumix 123 was calculated to be 0.02-0.03 m 2 /g from the manufacturer's specifications.…”

Section: Characterizationmentioning

confidence: 99%

Properties and characterization of an aluminium–silicon nitride fibre powder metal composite

Dougherty¹,

Xu²

2018

SN Appl. Sci.

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In this article, we fabricated one-dimensional 0.5 vol% silicon nitride (Si 3 N 4) fibre reinforced Alumix123 matrix composites by the powder metallurgy method. Si 3 N 4 is a ceramic material with high strength, stiffness and low coefficient of thermal expansion. The Si 3 N 4 used in the study is comprised of single crystal fibres with sub-micrometre diameter and length < 25 μm. The size of the fibre is smaller than the metal matrix powder allowing it to coat the metal powder before consolidation rather than forming agglomerations that might lead to pores and poor mechanical properties. We investigated the effects of Si 3 N 4 fibre additions on the densification, hardness, elastic modulus and tensile strength. The experimental results found that the Si 3 N 4 fibre effectively enhanced the mechanical properties of the composites at low additions. The microstructural analysis clearly shows the Si 3 N 4 fibres in the sintered grain boundaries. The interface between the fibre and the Alumix123 matrix showed good wetting and bonding with only minimal reaction. The Si 3 N 4 fibre reinforced Alumix123 composites have potential uses in the automobile and aerospace industries due to their improved specific mechanical properties.

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Section: Characterizationmentioning

confidence: 99%

Properties and characterization of an aluminium–silicon nitride fibre powder metal composite

Dougherty¹,

Xu²

2018

SN Appl. Sci.

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Mechanical Properties and Microstructure of PM Ti-Si₃N₄Discontinuous Fibre Composite

Cited by 1 publication

References 13 publications

Properties and characterization of an aluminium–silicon nitride fibre powder metal composite

Properties and characterization of an aluminium–silicon nitride fibre powder metal composite

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Mechanical Properties and Microstructure of PM Ti-Si3N4Discontinuous Fibre Composite

Cited by 1 publication

References 13 publications

Properties and characterization of an aluminium–silicon nitride fibre powder metal composite

Properties and characterization of an aluminium–silicon nitride fibre powder metal composite

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Product

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Mechanical Properties and Microstructure of PM Ti-Si₃N₄Discontinuous Fibre Composite