Effect of reinforcement size and matrix microstructure on the fracture properties of an aluminum metal matrix composite

Manoharan, M.; Lewandowski, John J.

doi:10.1016/0921-5093(92)90110-m

Cited by 81 publications

(33 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It increases from 195 MPa for (80-100 µm) sized particles to 250 MPa for (40-80 µm) particles size, and finally to 295 MPa for 0−20 µm sized samples with significant plastic deformation. Higher work hardening rate was observed with decreasing the particle size, which is attributed to the formation of dislocation tangles around the particles, due to plastic incompatibility between the reinforcement and matrix, and the formation of a dislocation cell structure with a cell size inversely proportional to the inter particle spacing [27][28][29]. The increase in strength of the material can be explained by using the Equation (1) [12].…”

Section: Resultsmentioning

confidence: 99%

Effect of Particle Size on Microstructure and Mechanical Properties of Al-Based Composite Reinforced with 10 Vol.% Mechanically Alloyed Mg-7.4%Al Particles

et al. 2016

View full text Add to dashboard Cite

Abstract:The effect of Mg-7.4%Al reinforcement particle size on the microstructure and mechanical properties in pure Al matrix composites was investigated. The samples were prepared by hot consolidation using 10 vol.% reinforcement in different size ranges, D, 0 < D < 20 µm (0-20 µm), 20 ≤ D < 40 µm (20-40 µm), 40 ≤ D < 80 µm (40-80 µm) and 80 ≤ D < 100 µm (80-100 µm). The result reveals that particle size has a strong influence on the yield strength, ultimate tensile strength and percentage elongation. As the particle size decreases from 80 ≤ D < 100 µm to 0 < D < 20 µm, both tensile strength and ductility increases from 195 MPa to 295 MPa and 3% to 4% respectively, due to the reduced ligament size and particle fracturing. Wear test results also corroborate the size effect, where accelerated wear is observed in the composite samples reinforced with coarse particles.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Particle Size on Microstructure and Mechanical Properties of Al-Based Composite Reinforced with 10 Vol.% Mechanically Alloyed Mg-7.4%Al Particles

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The inhocessing history of the material. [1][2][3][4][5] Processing-related mogeneous dislocation distribution then affects subsequent defects in the form of intermetallic inclusions or particle plastic flow, yield strength, and work hardening, as well as clusters are also part of the matrix microstructure and play the precipitation kinetics during aging. [16,17] Strengthening a role in fatigue strength.…”

Section: Introductionmentioning

confidence: 99%

The effect of matrix microstructure on the tensile and fatigue behavior of SiC particle-reinforced 2080 Al matrix composites

Chawla

Habel

Shen

et al. 2000

Metall Mater Trans A

View full text Add to dashboard Cite

The effect of matrix microstructure on the stress-controlled fatigue behavior of a 2080 Al alloy reinforced with 30 pct SiC particles was investigated. A thermomechanical heat treatment (T8) produced a fine and homogeneous distribution of SЈ precipitates, while a thermal heat treatment (T6) resulted in coarser and inhomogeneously distributed SЈ precipitates. The cyclic and monotonic strength, as well as the cyclic stress-strain response, were found to be significantly affected by the microstructure of the matrix. Because of the finer and more-closely spaced precipitates, the composite given the T8 treatment exhibited higher yield strengths than the T6 materials. Despite its lower yield strength, the T6 matrix composite exhibited higher fatigue resistance than the T8 matrix composite. The cyclic deformation behavior of the composites is compared to monotonic deformation behavior and is explained in terms of microstructural instabilities that cause cyclic hardening or softening. The effect of precipitate spacing and size has a significant effect on fatigue behavior and is discussed. The interactive role of matrix strength and SiC reinforcement on stress within "rogue" inclusions was quantified using a finite-element analysis (FEA) unit-cell model.

show abstract

“…Estas mejoras, unidas a su facilidad de procesado y menor coste, respecto a los MC metálicos reforzados con fibra larga, hacen que estos materiales sean muy prometedores en las industrias del automóvil y aeroespacial (1-3). Sin embargo, en las aleaciones de la serie 7XXX no se ha conseguido mejorar sus propiedades mecá-nicas añadiéndoles reforzantes de SiC (4)(5)(6)(7)(8)(9)(10)(11)(12). Por el contrario, se produce un cierto deterioro de estas propiedades.…”

Section: Introductionunclassified

Influencia del tamaño de partícula de polvo sobre las propiedades mecánicas de la aleación PM Al7075 reforzada con SiCp

Torralba¹,

Adeva²,

Lieblich³

et al. 1998

REVMETAL

View full text Add to dashboard Cite

A. García-Escoriar y G. González-Doncer y Resumen Se ha estudiado la influencia del tamaño de partícula de polvo de la aleación de aluminio 7075, obtenido en condiciones de solidificación rápida (SR) por atomización con argón a alta presión, sobre las propiedades mecánicas a temperatura ambiente de un material compuesto 7075-15 % vol. SiCp. Para preparar el material compuesto, se utilizaron tres tamaños distintos de partículas de polvo de la aleación: < 50 |xm, 50-100 (xm y 100-200 fjim. Estas fracciones se mezclaron en un molino de bolas con un 15 % vol. de partículas de SiC, < 5 [xm, y luego.se extruyeron en caliente. Las mejores propiedades del compuesto se obtienen cuando se utiliza el tamaño más pequeño. En este caso, se produce una clara mejoría de las propiedades mecánicas respecto del mismo material sin reforzar y obtenido por el mismo procedimiento, excepto para la ductilidad. Esta mejora se atribuye principalmente a una dispersión más homogénea de las partículas reforzantes de SiC.Palabras clave: Materiales compuestos. A17075-SiCp. Tamaño de partícula. Solidificación rápida. Molino de bolas. Influence of powder particle size on the mechanical properties of SiCp reinforced A.A.7075Abstract The influence of powder particle size of 7075 aluminum on the room temperature mechanical properties of 7075-15 vol. % SiCp has been studied. The aluminum powder was obtained by argón atomization under rapid solidification conditions. Composite materials were prepared from three different particle sizes, namely; < 50 ¿Jim, 50-100 jxm and 100-200 |mm. These powders were blended with 15 vol % of SiC particles < 5 |xm in size by ball milling and then, hot extruded. The best properties of the resulting composites correspond to the material prepared from the smallest particle size. For this case, a clear improvement of the mechanical properties, except for ductility, is obtained. This is attributed to a more homogeneous distribution of the reinforcing SiC particles.

show abstract

Effect of reinforcement size and matrix microstructure on the fracture properties of an aluminum metal matrix composite

Cited by 81 publications

References 17 publications

Effect of Particle Size on Microstructure and Mechanical Properties of Al-Based Composite Reinforced with 10 Vol.% Mechanically Alloyed Mg-7.4%Al Particles

Effect of Particle Size on Microstructure and Mechanical Properties of Al-Based Composite Reinforced with 10 Vol.% Mechanically Alloyed Mg-7.4%Al Particles

The effect of matrix microstructure on the tensile and fatigue behavior of SiC particle-reinforced 2080 Al matrix composites

Influencia del tamaño de partícula de polvo sobre las propiedades mecánicas de la aleación PM Al7075 reforzada con SiCp

Contact Info

Product

Resources

About