Development of Al356/SiCp cast composites by injection of SiCp containing composite powders

Amirkhanlou, Sajjad; Niroumand, Behzad

doi:10.1016/j.matdes.2010.12.013

Cited by 97 publications

(40 citation statements)

References 21 publications

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“…The average size of SiC particles incorporated into the matrix was also significantly reduced from about 8 to 3 μm by injecting milled composite powders. The ultimate tensile strength, yield strength and elongation of Al356/5 vol.% SiC p composite manufactured by compo-casting of the (Al-SiC p -Mg)c p injected melt were increased by 90%, 103% and 135%, respectively, compared to those of the composite manufactured by stir casting of the untreated-SiC p injected melt [18].…”

Section: Introductionmentioning

confidence: 86%

Particulate Distribution improvement for Al/SiC MMC and Al/MgO MMC Prepared by Modified Liquid State Stir Mixing-Casting

KhademeelJamea¹

2017

IOSR JMCE

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Section: Introductionmentioning

confidence: 86%

Particulate Distribution improvement for Al/SiC MMC and Al/MgO MMC Prepared by Modified Liquid State Stir Mixing-Casting

KhademeelJamea¹

2017

IOSR JMCE

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“…Due to these advantages, they are used in aerospace industries (airframe and aerospace components), automobile industries (engine pistons), and electronic components. [1][2][3][4][5][6][7][8] Many techniques have been developed for producing particulate-reinforced AMMCs, such as stir casting, squeeze casting, [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] and powder metallurgy. [19][20][21] Although each of these methods has its own advantages and disadvantages, they are all relatively expensive.…”

Section: Aluminum Metal Matrix Composites (Ammcs)mentioning

confidence: 99%

“…However, methods of achieving the following in stir casting are mostly to be considered: (i) no adverse chemical reaction between the reinforcement material and matrix alloy, (ii) no or very low porosity in the cast AMMCs, (iii) wettability between the two main phases, and (iv) achieving a uniform distribution of the reinforcement material. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] Some of the methods used to achieve these goals during stir casting of aluminum matrix composites are the modification of the alloy composition, coating or specific treatments to the reinforcements, and control of the process parameters (stirring temperature and time, etc.). [11][12][13][14] Among these, coating of the reinforcement is a successful technique used to prevent adverse interfacial reaction and promote wetting of the particles by aluminum through increasing the overall surface energy of the solid.…”

Section: Aluminum Metal Matrix Composites (Ammcs)mentioning

confidence: 99%

A Novel Method for Incorporation of Micron-Sized SiC Particles into Molten Pure Aluminum Utilizing a Co Coating

Mohammadpour

Khosroshahi

Mousavian

et al. 2014

Metall Mater Trans B

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Ceramic particles typically do not have sufficiently high wettability by molten metal for effective bonding during metal matrix composite fabrication. In this study, a novel method has been used to overcome this drawback. Micron-sized SiC particles were coated by a cobalt metallic layer using an electroless deposition method. A layer of cobalt on the SiC particles was produced prior to incorporation in molten pure aluminum in order to improve the injected particle bonding with the matrix. For comparison, magnesium was added to the melt in separate experiments as a wetting agent to assess which method was more effective for particle incorporation. It was found that both of these methods were more effective as regard ceramic particulate incorporation compared with samples produced with as-received SiC particles injected into the pure aluminum matrix. SEM images indicated that cobalt coating of the particles was more effective than magnesium for incorporation of fine SiC particles (below 30 lm), while totally the incorporation percentage of the particles was higher for a sample in which Mg was added as a wetting agent. In addition, microhardness tests revealed that the cobalt coating leads to the fabrication of a harder composite due to increased amount of ceramic incorporation, ceramic-matrix bonding, and possibly also to formation of Al-Co intermetallic phases.

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“…Low interfacial adherence and non-homogeneous distribution are the main challenges for the conventional metal composite manufacturing process [3]. Previous research on homogeneous distribution of reinforcement particles in an aluminum matrix have been attempted by milling of SiC p and aluminum powders and casting at semi-solid state to improve the wettability and distribution [4,5]. Undesirable fiber cracking occurs under high load pressure in the powder metallurgy process [6].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and properties of aluminum silicon/short fibre carbon composites fabricated by semi-solid thixomixing

2015

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A novel method was developed, based on thixotropic nature of semi-solid slurry of aluminum silicon alloy, for the effective dispersion and distribution of short carbon fibers (C sf ) under intensive shear stress (τ) into the eutectic without physical or chemical damage.The C sf were distributed homogeneously into the matrix at optimum conditions: a temperature of 576-580 °C, around 48% of solid fraction, and rotation speed of mixing was at 100 rpm. The gas entrapment and porosity was a challenge in the fabrication the aluminum composite by thixomixing, and its size increased when the samples were heat treated. The extruded and heat treated composites had around 24% improvement of mechanical strength as assessed by tensile tests. The predominant deposition of silicon and its intermetallics at the interfacial region improved the wettability and adherence to achieve good mechanical properties. The formation of some intermetallics can be helpful to overcome low wettability effects and their structural evolutions were impressive. The fractography analysis illustrated the ductile fracture with some plastic deformation as the results of dimples and some fiber pull-out in the fractured surface. Ultra-micro hardness evaluation showed good interfacial bonding after heat treatment. The thixomixing process can be developed to produce various composites with different reinforcement.

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Development of Al356/SiCp cast composites by injection of SiCp containing composite powders

Cited by 97 publications

References 21 publications

Particulate Distribution improvement for Al/SiC MMC and Al/MgO MMC Prepared by Modified Liquid State Stir Mixing-Casting

Particulate Distribution improvement for Al/SiC MMC and Al/MgO MMC Prepared by Modified Liquid State Stir Mixing-Casting

A Novel Method for Incorporation of Micron-Sized SiC Particles into Molten Pure Aluminum Utilizing a Co Coating

Microstructure and properties of aluminum silicon/short fibre carbon composites fabricated by semi-solid thixomixing

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