Thermal expansion and thermal mismatch stress relaxation behaviors of SiC whisker reinforced aluminum composite

Fei, W.D.; Hu, Maoliang; Yao, C.K.

doi:10.1016/s0254-0584(02)00172-4

Cited by 75 publications

(21 citation statements)

References 16 publications

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“…The strengthening/toughening mechanisms are mainly dependent on the interlaminar and interfacial bonding strength, which are closely related to the surface roughness, chemistry of the whiskers and the thermal expansion mismatch between whisker and matrix [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Strengthening/toughening of laminated SiCw/SiC ceramic composites by heat treatment

Xie

Cheng

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Strengthening/toughening of laminated SiCw/SiC ceramic composites by heat treatment

Xie

Cheng

et al. 2015

Ceramics International

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“…Majority of these applications require operation at varying temperature conditions ranging from high to cryogenic temperatures [6,7] . Structural components used in the aerospace industries such as aircraft wings, fuselage frames, and landing gears are frequently exposed to severe thermal loads created by aerodynamic heating [8,9] . Hence, it is important to study their thermal behaviour under these conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Studying the thermal expansion behaviour of composites also has significant importance since most of the structural components are subjected to variable temperature operation, and hence, the materials used in these components should have lower and stable CTE and outstanding mechanical properties [3] . Thermal expansion behaviour of composites is affected by several material parameters, such as the type of constituents, matrix microstructure, reinforcement volume fraction and architecture, the internal stresses due to their CTE mismatch, thermal history, porosity, and interface bond strength [9] .…”

Section: Introductionmentioning

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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“…[2][3][4][5][6][7][8] Moreover, the discontinuously reinforced metal-matrix composites containing a discontinuous reinforcement such as short fibers, whiskers, or particles are attractive for various structural applications in the aerospace and automobile industries, and even for electrical components due to the unique combinations of mechanical, physical, and thermal properties. 9 SiC whiskers, fibers, and particles have been widely used in aluminum-based hybrid composites, 10 magnesium-based composites, 11 and zinc alloy matrix composites 12 as reinforcements to fabricate high-performance composites. Furthermore, SiC has a thermal conductivity (TC) of about 200-300 W/ (m K) and a coefficient of thermal expansion of 4.5 Â 10 À6 K Àe1 .…”

Section: Introductionmentioning

confidence: 99%

Fabrication and properties of tungsten-copper alloy reinforced by titanium-coated silicon carbide whiskers

Shi

Zhai

et al. 2014

Journal of Composite Materials

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Titanium-coated silicon carbide whiskers were prepared by vacuum slow vapor deposition process. W-20Cu composite powder was fabricated by spray drying and calcining-continuous reduction technology. The paper adopted hot-press sintering to prepare titanium-coated silicon carbide whiskers/W-20Cu composites. Effects of addition amount of titanium-coated silicon carbide whiskers on the phases, microstructures, and properties of the composites were investigated. Titanium-coated silicon carbide whiskers/W-20Cu composites with improved mechanical properties and thermal conductivities were fabricated by hot-press sintering at 1350 C under a pressure of 30 MPa for 2 h in pure Ar atmosphere. The transverse rupture strength and thermal conductivity of the 0.6 wt% titanium-coated silicon carbide whiskers/ W-20Cu composite when compared with W-20Cu-based alloy were enhanced by 22% and 26%, respectively. With reasonable addition amount of titanium-coated silicon carbide whiskers, the composites without graphite, tungsten carbide, and silicon phases were obtained.

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Thermal expansion and thermal mismatch stress relaxation behaviors of SiC whisker reinforced aluminum composite

Cited by 75 publications

References 16 publications

Strengthening/toughening of laminated SiCw/SiC ceramic composites by heat treatment

Strengthening/toughening of laminated SiCw/SiC ceramic composites by heat treatment

The behaviour of aluminium matrix composites under thermal stresses

Fabrication and properties of tungsten-copper alloy reinforced by titanium-coated silicon carbide whiskers

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