Short-fiber/particle hybrid reinforcement: Effects on fracture toughness and fatigue crack growth of metal matrix composites

Oh, Kyoung-Hwan; Han, Kap Su

doi:10.1016/j.compscitech.2006.06.020

Cited by 65 publications

(25 citation statements)

References 27 publications

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“…When Al(OH) 3 content is below 10%, the fracture absorbed energy increased with the particle weight fraction, which is due to the increasing number of interface encountered by the growing crack in the samples. The retarding effect of the interfaces on the advancing crack increases the amount of energy to failure in the Al(OH) 3 / UP samples [15][16][17][18][19]. When the content of Al(OH) 3 particle is above 10%, it is difficult to get a uniform distribution of particles which results in decrease of the absorbed energy in the failure process.…”

Section: Resultsmentioning

confidence: 96%

Effect of Al(OH)3 Particle Fraction on Mechanical Properties of Particle-Reinforced Composites Using Unsaturated Polyester as Matrix

Zhao

Jia

et al. 2010

J Fail. Anal. and Preven.

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The effect of particle fraction on mechanical properties of particle-reinforced composites was studied using tensile and hardness testing. Unsaturated polyester (UP) was used as polymer matrix, and aluminum hydroxide as the reinforcing particles. The fracture morphology of tensile samples was observed by scanning electron microscopy (SEM). The results showed that the tensile strength and absorbed energy increased to a maximum at 10% particle content and then decreased. With increasing content of aluminum hydroxide, the elastic modulus increased, and the fracture elongation decreased. The SEM showed that the failure of the Al(OH) 3 /UP composites was one of macroscopically brittle fracture. In addition, the study showed that appropriate amount of filler can enhance the surface hardness of Al(OH) 3 /UP composite.

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Section: Resultsmentioning

confidence: 96%

Effect of Al(OH)3 Particle Fraction on Mechanical Properties of Particle-Reinforced Composites Using Unsaturated Polyester as Matrix

Zhao

Jia

et al. 2010

J Fail. Anal. and Preven.

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“…It has also been reported that the main reason for fracture in discontinuously reinforced systems is the formation and coalescence of voids arising from reinforcement fractures ahead of the crack tip [19][20][21]. Moreover, Oh and Han [22] indicated that in short fiber/particle hybrid aluminum matrix composites, the crack paths became more tortuous and surface roughness was enhanced as compared to that of fiber-reinforced composites. Therefore, the fatigue threshold increased.…”

Section: Introductionmentioning

confidence: 96%

Effect of hybrid reinforcement on crack initiation and early propagation mechanisms in cast metal matrix composites during low cycle fatigue

2013

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“…[1][2][3][4] The properties of the composite in the submicron level strongly influence the macroscopic mechanical properties of the composite. Therefore, there is a need to study the local mechanical properties of composite in the nanoscale.…”

Section: Introductionmentioning

confidence: 99%

Nanomechanical properties of magnesium-based hybrid composites with graphite nanofiber and alumina short fiber

Babu

Kang

2011

Journal of Composite Materials

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In this study, an attempt was made to evaluate the nanomechanical properties of magnesium-based hybrid composites with graphite nanofibers (GNFs) and alumina short fibers (Al 2 O 3sf ) by nanoindentation. The nanoindentation was performed using continuous stiffness measurement (CSM) method with an indentation depth of 2000 nm. To find out the modulus and hardness of composites of local regions, indentation tests were carried out in different locations of the sample, such as GNFs/Al 2 O 3sf region, Al 2 O 3sf region, GNFs cluster, and Mg matrix. The modulus and hardness values closer to the GNFs/Al 2 O 3sf region are higher than those of the corresponding to the other regions primarily because of a higher constraint to the localized matrix deformation during indentation. Furthermore, the presence of GNFs can act as a barrier for movement of dislocations enhancing the indentation properties. The presence of MgO/Mg 17 Al 12 also can contribute to improve the nanoindentation properties of the present composite system.

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Short-fiber/particle hybrid reinforcement: Effects on fracture toughness and fatigue crack growth of metal matrix composites

Cited by 65 publications

References 27 publications

Effect of Al(OH)3 Particle Fraction on Mechanical Properties of Particle-Reinforced Composites Using Unsaturated Polyester as Matrix

Effect of Al(OH)3 Particle Fraction on Mechanical Properties of Particle-Reinforced Composites Using Unsaturated Polyester as Matrix

Effect of hybrid reinforcement on crack initiation and early propagation mechanisms in cast metal matrix composites during low cycle fatigue

Nanomechanical properties of magnesium-based hybrid composites with graphite nanofiber and alumina short fiber

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