Microstructure and interfacial reactions of β-eucryptite particles in aluminum matrix composites

Wang, L.D.; Fei, W.D.

doi:10.1016/j.msea.2006.06.092

Cited by 7 publications

(2 citation statements)

References 9 publications

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“…The CTE of β-eucryptite (β-LiAlSiO 4 , denoted as Euc) is negative, whose CTEs along the crystallographic a-and c-axes are 7.8 × 10 −6 °C −1 and −17.5 × 10 −6 °C −1 , respectively [6]. Both the ceramic and the aluminum matrix composites containing β-eucryptite particles have been studied [7][8]; however, the report on the Euc/Cu composite is rare.…”

Section: Introductionmentioning

confidence: 99%

Thermal expansion behavior of a β-LiAlSiO4/Cu composite

et al. 2009

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A copper matrix composite reinforced by β-LiAlSiO 4 with negative thermal expansion coefficient was fabricated using vacuum hot-pressed sintering technique. The thermal expansion behavior of the composite was investigated, and the average residual stress in the matrix was analyzed by a simple model. The results indicate that the residual stress in the matrix affects the thermal expansion properties. After heat treatment, the coefficient of thermal expansion (CTE) of the composite decreases greatly. The CTE of the composite after thermal cycling between 50-350°C is the lowest.

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Section: Introductionmentioning

confidence: 99%

Thermal expansion behavior of a β-LiAlSiO4/Cu composite

et al. 2009

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“…The CTE of the AMC containing β -eucryptite particles and aluminium borate whiskers fabricated by squeeze-casting technique was affected significantly by the degree of interfacial reaction on the surface of β -eucryptite particle. Stronger interface between the β -eucryptite particle and the Al matrix resulted in lower CTE of the composite [103,133,134] . The overall CTE of AMC is determined mainly by the total volume fraction of the reinforcement than the average particle size and particle size distribution [135,136] .…”

Section: Thermal Expansionmentioning

confidence: 99%

The behaviour of aluminium matrix composites under thermal stresses

Dash

Sukumaran

Ray

2014

Science and Engineering of Composite Materials

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The present review work elaborates the behaviour of aluminium matrix composites (AMCs) under various kinds of thermal stresses. AMCs find a number of applications such as automobile brake systems, cryostats, microprocessor lids, space structures, rocket turbine housing, and fan exit guide vanes in gas turbine engines. These applications require operation at varying temperature conditions ranging from high to cryogenic temperatures. The main objective of this paper was to understand the behaviour of AMCs during thermal cycling, under induced thermal stresses and thermal fatigue. It also focuses on the various thermal properties of AMCs such as thermal conductivity and coefficient of thermal expansion (CTE). CTE mismatch between the reinforcement phase and the aluminium matrix results in the generation of residual thermal stress by virtue of fabrication. These thermal stresses increase with increasing volume fraction of the reinforcement and decrease with increasing interparticle spacing. Thermal cycling enhances plasticity at the interface, resulting in deformation at stresses much lower than their yield stress. Low and stable CTE can be achieved by increasing the volume fraction of the reinforcement. The thermal fatigue resistance of AMC can be increased by increasing the reinforcement volume fraction and decreasing the particle size. The thermal conductivity of AMCs decreases with increase in reinforcement volume fraction and porosity.

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