Influence of microstructure of fibre/matrix interface on mechanical properties of Al/SiC composites

Henriksen, B.R.; Johnsen, T. E.

doi:10.1179/mst.1990.6.9.857

Cited by 18 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particle‐reinforced AMCs like Al–SiCp, the distribution of the particles in the aluminium matrix and the microstructure of the ceramic particle/matrix interfaces are among the characteristics that most determine properties ( Yao et al ., 1995 ). Reinforcement/matrix interfaces play a key role in the fracture behaviour of AMCs and a chemical reaction at these interfaces may lead to a strong bond between the two constituents, but a brittle reaction product can be highly detrimental to the mechanical performance of the composite ( Heriksen & Johnsen, 1990). By contrast, during melt processing an excessively high interfacial reaction may reduce wetting of ceramic particles and cause them to agglomerate, and this is also detrimental to the fracture toughness of the composite ( Mortensen & Jin, 1992).…”

Section: Introductionmentioning

confidence: 99%

Scanning and transmission electron microscopy study of the microstructural changes occurring in aluminium matrix composites reinforced with SiC particles during casting and welding: interface reactions

Ureña¹,

Jm²,

Gil³

et al. 1999

Journal of Microscopy

View full text Add to dashboard Cite

Processing of aluminium matrix composites (AMCs), especially those constituted by a reactive system such as Al-SiC, presents great difficulties which limit their potential applications. The interface reactivity between SiC and molten Al generates an aluminium carbide which degrades the composite properties. Scanning and transmission electron microscopes equipped with energy-dispersive X-ray spectroscopes are essential tools for determining the structure and chemistry of the Al-SiC interfaces in AMCs and changes occurring during casting and arc welding. In the present work, an aluminium-copper alloy (AA2014) reinforced with three different percentages of SiC particles was subjected to controlled remelting tests, at temperatures in the range 750-900 degrees C for 10 and 30 min. Arc welding tests using a tungsten intert gas with power inputs in the range 850-2000 W were also carried out. The results of these studies showed that during remelting there is preferential SiC particle consumption with formation of Al4C3 by interface reaction between the solid SiC particle and the molten aluminium matrix. The formation of Al4C3 by the same mechanism has also been detected in molten pools of arc welded composites. However, in this case there was formation of an almost continuous layer of Al4C3, which protects the particle against further consumption, and formation of aciculate aluminium carbide on the top weld. Both are formed by fusion and dissolution of the SiC in molten aluminium followed by reaction and precipitation of the Al4C3 during cooling.

show abstract

Section: Introductionmentioning

confidence: 99%

Scanning and transmission electron microscopy study of the microstructural changes occurring in aluminium matrix composites reinforced with SiC particles during casting and welding: interface reactions

Ureña¹,

Jm²,

Gil³

et al. 1999

Journal of Microscopy

View full text Add to dashboard Cite

show abstract

“…Since ber preforms are relatively compliant porous materials, and since the applied pressure can be as high as 100 MPa, signi cant preform deformation is often observed in in ltrated composites. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] In analyzing the in ltration process for these cases, preform deformation, then, cannot be neglected.…”

Section: Introductionmentioning

confidence: 99%

Infiltration of fibrous preforms by a pure metal: Part V. Influence of preform compressibility

Michaud

Mortensen

Sommer

1999

Metall Mater Trans A

View full text Add to dashboard Cite

In ltration by a pure matrix in the presence of preform deformation and partial matrix solidi cation is analyzed using a bounding approach for the preform rheology where solid metal is present. It is found, using parameters for the in ltration of short alumina ber preforms by aluminum, that the two bounds are close in comparison to other factors of uncertainty in the prediction of in ltration rate. Using this approach, preform compression is shown to exert a signi cant in uence on the in ltration rate for the system explored; in particular, the analysis shows the existence of an optimal value of applied pressure. Simpli cations in the analysis are also presented, which yield fairly accurate results while easing their computation signi cantly.

show abstract

“…In most composites reinforcement is added to the matrix of the bulk material to increase strength and stiffness of the matrix [1][2][3]. A reduction in material density coupled with an increase in stiffness yield strength can be translated to reduction of structural weight.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Characterization of Al 1100 Alloy in Different Concentration of Ammonium Chloride Solution at Laboratory Temperature.

Rd¹,

Prakash²

2017

Chem Sci J

View full text Add to dashboard Cite

In this study of Al 1100 alloy is selected, the corrosion test was conducted at room temp using Electrochemical studies. The corrodent medium used for the test was 1 M, 75 M, 0.5 M and 0.25 M Ammonium chloride solution. The specimen was washed with distilled water fallowed by acetone and allowed to dry thoroughly the corrodent specimen was cleaned with brush for remove adhering corrosion product washed with water and acetone, then dried. The corrosion rates are calculated using CH-Instrument. In each case the corrosion rate in ammonium chloride solution decreases and the corrosion becomes decrease in exposure time for Al alloy due to the aluminium in many induced passivation due to the formation of metal chloride layer.

show abstract

Influence of microstructure of fibre/matrix interface on mechanical properties of Al/SiC composites

Cited by 18 publications

References 11 publications

Scanning and transmission electron microscopy study of the microstructural changes occurring in aluminium matrix composites reinforced with SiC particles during casting and welding: interface reactions

Scanning and transmission electron microscopy study of the microstructural changes occurring in aluminium matrix composites reinforced with SiC particles during casting and welding: interface reactions

Infiltration of fibrous preforms by a pure metal: Part V. Influence of preform compressibility

Electrochemical Characterization of Al 1100 Alloy in Different Concentration of Ammonium Chloride Solution at Laboratory Temperature.

Contact Info

Product

Resources

About