Effect of particle size on fracture toughness of SiC/Al composite material

Flom, Yury; Arsenault, R.J.

doi:10.1016/0001-6160(89)90039-4

Cited by 186 publications

(58 citation statements)

References 15 publications

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“…This was shown by Davidson [5][6][7] using a stereo-imaging technique to visualise crack-tip strain fields, and was later qualitatively corroborated by Flom and Arsenault [8]. Other fracture data confirm that a significant plastic zone is formed: K Ic values exceeding 20 MPa m 1=2 have indeed been reported in various studies or reviews [3,[9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 60%

Investigation of crack-tip plasticity in high volume fraction particulate metal matrix composites

Miserez

Rossoll

Mortensen

2004

Engineering Fracture Mechanics

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Crack-tip strain fields in high volume fraction ceramic particle reinforced metal matrix composites are assessed using photoelastic measurements. It is shown that the size of the significant crack-tip plastic zones that form in these materials depends on the type and diameter of the reinforcement and on the matrix material. This plastic zone size correlates well with the macroscopic toughness values assessed through J -integral testing. The composites are thus ''metallic'' in the sense that their toughness is mostly composed of plastic energy dissipation around the crack tip. Plastic deformation also induces marked constraint effects that influence the shape of the surface strain fields. It is shown that finite element analysis must be three-dimensional to describe these strain fields, as two-dimensional plane-stress analysis fails to reproduce the experimental data.

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Section: Introductionmentioning

confidence: 60%

Investigation of crack-tip plasticity in high volume fraction particulate metal matrix composites

Miserez

Rossoll

Mortensen

2004

Engineering Fracture Mechanics

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“…Around 20 mass.% of this granulation contained particles larger than 20 µm, and a certain percent of 1-2 µm sized particles. Several authors (Flom and Arsenault, 1989) found that when a SiC particle size is 20 µm or larger, fracture process changes from mainly matrix controlled failure to particle cracking controlled. On the other hand, particles of around 1 µm are often prone to agglomeration during mixing.…”

Section: ( 1 )mentioning

confidence: 99%

Synthesis and Properties of Discontinouosly Reinforced Aluminum Matrix Composites

Božić¹,

Dimčić²

2011

Nanocomposites With Unique Properties and Applications in Medicine and Industry

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Due to the very high performance requests, a new type of, so called, "high tech" materials which are used in aircraft, rocket or automobile industry, need to have a good combination of properties under static and dynamic loading. One group of materials that can meet such requirements are metallic composites which consist of the metallic matrix (metal or alloy) reinforced whit whiskers or directionally oriented fibers of secondary phase. Currently, there are many different composite materials available, enabling one to easily select the most suitable combination of metallic matrix and reinforcing phase, depending on the uniquely defined application requests. By selecting proper type of matrix and suitable chemical composition, shape and the amount of reinforcing phase, many composites with different mechanical properties can be produced. Potential application of such materials is very wide, but the limiting factor is still their quite high price due to the complexity of their production. In the last two decades there was an intense development of one class of composites with aluminum alloy matrix best known as the discontinuously reinforced aluminum materials (DRA). These materials consist of aluminum alloy matrix reinforced by ceramic particles. Although, DRA composites can be produced in many ways, powder metallurgy technique offers the best results. This article presents results of both fundamental and development studies of sintered composite materials with the Al-Zn-Mg-Cu matrix and the SiC reinforcing phase, conducted in last couple of years. As this is the composite which is already commercially applied or on the verge of being applied, all gathered results are thoroughly analyzed from the aspects of its synthesis, microstructure and several mechanical and fracture properties.

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“…[3][4][5][6][7][8][9] They found that the fracture modes in the SiC P /Al alloy composites mainly included the failure of their matrix, the fracture of interfaces between the particles and matrix, and the fracture of particles themselves. All their inspections, however, were made on the post-fractured specimens, therefore unable to disclose the detailed fracture processes during loading.…”

Section: Introductionmentioning

confidence: 99%

<I>In-situ</I> Observations of Fracture Processes in 0.6 μm and 9.5 μm SiC<SUB>P</SUB>/6061Al Composites

et al. 2005

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In-situ SEM observations of fracture processes in two 6061Al alloy composites reinforced with coarse and fine SiC particles, respectively, were carried out to clarify their fracture mechanisms. It was found that in the coarse particle reinforced composite, voids were formed in the matrix around SiC particles ahead of the main crack tip, then coalesced with each other, and finally connected with the main crack tip, causing propagation of the main crack. However, in the fine particle reinforced composite, multiple micro-cracks were formed at the boundaries between SiC particle clusters and surrounding matrix or within the clusters, then connected with each other, and finally joined with the main crack tip, leading to crack branching and growth of the main crack. Crack branching, multiple cracking and crack deflection were proposed to contribute to the enhanced fracture toughness in the fine particle reinforced composite compared with the coarse particle reinforced composite.

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Effect of particle size on fracture toughness of SiC/Al composite material

Cited by 186 publications

References 15 publications

Investigation of crack-tip plasticity in high volume fraction particulate metal matrix composites

Investigation of crack-tip plasticity in high volume fraction particulate metal matrix composites

Synthesis and Properties of Discontinouosly Reinforced Aluminum Matrix Composites

<I>In-situ</I> Observations of Fracture Processes in 0.6 μm and 9.5 μm SiC<SUB>P</SUB>/6061Al Composites

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Effect of particle size on fracture toughness of SiC/Al composite material

Cited by 186 publications

References 15 publications

Investigation of crack-tip plasticity in high volume fraction particulate metal matrix composites

Investigation of crack-tip plasticity in high volume fraction particulate metal matrix composites

Synthesis and Properties of Discontinouosly Reinforced Aluminum Matrix Composites

<I>In-situ</I> Observations of Fracture Processes in 0.6 &mu;m and 9.5 &mu;m SiC<SUB>P</SUB>/6061Al Composites

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<I>In-situ</I> Observations of Fracture Processes in 0.6 μm and 9.5 μm SiC<SUB>P</SUB>/6061Al Composites