Effect of interfacial reaction on the thermal expansion behavior of β-eucryptite particle and aluminum borate whisker reinforced 6061 aluminum alloy composite

Wang, L.D.; Fei, W.D.; Yao, C.K.

doi:10.1016/s0921-5093(01)01981-5

Cited by 30 publications

(5 citation statements)

References 12 publications

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“…This type of bonding exists in most ex situ synthesized composites when the reinforcement and the matrix can react with each other. The interface combinations of BN/Al, Al 18 B 4 O 33 /6061Al, and B 4 C/Al composites fall into this category. − The reinforcement is consumed by the interfacial reaction, which might destroy the structural integrity of the reinforcement and affects its mechanical properties. Therefore, it is necessary to control the extent of interface reaction.…”

Section: Introductionmentioning

confidence: 99%

Orientation Relationships and Interface Structure in MgAl₂O₄ and MgAlB₄ Co-Reinforced Al Matrix Composites

Wang

Shi

et al. 2019

ACS Appl. Mater. Interfaces

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Ceramic phase reinforced aluminum matrix composites (CAMCs) are widely used in high-tech fields represented by aerospace industry due to their advantages of high specific strength, high specific modulus, high thermal stability, and light weight. Strong interface bonding is a prerequisite for high performance of multiphase materials. Herein, a novel CAMC in situ reinforced by MgAl2O4 particles and MgAlB4 nanorods was prepared by vacuum hot-pressing combined with hot-extrusion process. A high-resolution transmission electron microscope was used to characterize the orientation relationship and interface structure between the ceramic phases and the aluminum matrix. Two orientation relationships (OR1 and OR2) of MgAl2O4/Al and one (OR3) of MgAlB4/Al are determined: OR1-[011]p//[011]Al, (11̅1)p//(11̅1)Al; OR2-[211]p//[011]Al, (113̅)p//(022̅)Al; OR3-[101̅0]R//[001]Al, (0002)R//(2̅20)Al. The MgAl2O4 in OR1 forms a coherent interface with the aluminum matrix at (111) surface, while they form a 4 × 5 near coincidence site lattice (CSL) interface structure for OR2. In OR3, the MgAlB4 forms an approximate coherent interface with Al matrix at its (0002) surface and a 2 × 5 CSL interface structure at its (011̅0) surface. First-principles calculations suggest that MgAl2O4 combines to aluminum at (111) plane through covalent bonds, which means high interfacial bonding strength. The hot-extrusion process makes the ceramic phase evenly distributed in the matrix. The mechanical properties of the composites are greatly improved compared with pure aluminum.

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Section: Introductionmentioning

confidence: 99%

Orientation Relationships and Interface Structure in MgAl₂O₄ and MgAlB₄ Co-Reinforced Al Matrix Composites

Wang

Shi

et al. 2019

ACS Appl. Mater. Interfaces

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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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“…However, aluminum alloys have high CTE and they expand greatly in the friction heat, which gives serious influence on the stability of coefficient of friction. Therefore, the CTE of aluminum alloys has been recognized as one of the important thermomechanical properties, and many researches have been carried to reduce their CTE [17,18]. Undoubtedly, combining the porous materials derived from wood with Al alloy can provide a new method for it.…”

Section: Thermal Expansion and Thermal Conductivitymentioning

confidence: 99%

Preparation and thermal properties of metal matrix composites with wood-structure

Wang¹,

Fan²,

Zhang³

et al. 2008

Materials & Design

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Effect of interfacial reaction on the thermal expansion behavior of β-eucryptite particle and aluminum borate whisker reinforced 6061 aluminum alloy composite

Cited by 30 publications

References 12 publications

Orientation Relationships and Interface Structure in MgAl₂O₄ and MgAlB₄ Co-Reinforced Al Matrix Composites

Orientation Relationships and Interface Structure in MgAl₂O₄ and MgAlB₄ Co-Reinforced Al Matrix Composites

The behaviour of aluminium matrix composites under thermal stresses

Preparation and thermal properties of metal matrix composites with wood-structure

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Effect of interfacial reaction on the thermal expansion behavior of β-eucryptite particle and aluminum borate whisker reinforced 6061 aluminum alloy composite

Cited by 30 publications

References 12 publications

Orientation Relationships and Interface Structure in MgAl2O4 and MgAlB4 Co-Reinforced Al Matrix Composites

Orientation Relationships and Interface Structure in MgAl2O4 and MgAlB4 Co-Reinforced Al Matrix Composites

The behaviour of aluminium matrix composites under thermal stresses

Preparation and thermal properties of metal matrix composites with wood-structure

Contact Info

Product

Resources

About

Orientation Relationships and Interface Structure in MgAl₂O₄ and MgAlB₄ Co-Reinforced Al Matrix Composites

Orientation Relationships and Interface Structure in MgAl₂O₄ and MgAlB₄ Co-Reinforced Al Matrix Composites