Mechanical properties of Al-10% Cu alloy particulate composites

Prasad, Priya R.; Ray, S.; Gaindhar, J. L.; Kapoor, M. L.

doi:10.1016/0036-9748(85)90001-8

Cited by 5 publications

(5 citation statements)

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“…Aikin and Christodoulou [34] have taken ␣ ϭ 1/2, while Prasad et al [31] has found ␣ ϭ 4(DZ) 2 / 2 , in term of parameters of microstructure such as D and Z, representing, respectively, the average particle size and the average of the inverse of the planar section diameter. Nath et al [33] has found ␣ ϭ Ϫ0.3 in dual-phase steel following the expression of Prasad et al [31] In cast composites, there is the presence of porosity affecting the yield strength; therefore, to isolate the effect of particles, it is necessary to eliminate the contribution of porosity in the observed yield strength in order to arrive at an estimate of yield strength at zero porosity. The quantitative influence of an individual pore on the yield stress is governed by its shape and size.…”

Section: B Mechanical Propertiesmentioning

confidence: 98%

“…The strengthening in PMMCs has been extensively investigated leading to several explanations for the increased yield strength of PMMCs. [31][32][33][34][35] The shear-lag theory, although providing a simplistic treatment of load transfer from matrix to the particles, leads to a linear closed form expression for yield stress in pore-free composite as [31,34] [4]…”

Section: B Mechanical Propertiesmentioning

confidence: 99%

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Processing, microstructure, and mechanical properties of cast In-Situ Al(Mg, Ti)-Al2O3(TiO2) composite

Hamid

Jain

Ghosh

et al. 2006

Metall Mater Trans A

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In-situ particle-reinforced aluminum alloy-based cast composites have been synthesized by solidification of the slurry obtained by dispersion of externally added titanium dioxide (TiO 2 ) particles in molten aluminum at different processing temperatures. Alumina particles (Al 2 O 3 ) form in situ through chemical reaction of TiO 2 particles with molten aluminum. Simultaneously, the chemical reaction also releases titanium, which dissolves into molten aluminum and results in the formation of intermetallic phase Ti(Al 1-x ,Fe x ) 3 during solidification. Increasing the processing temperature increases (1) the amount of elongated as well as blocky intermetallic phase Ti(Al 1-x ,Fe x ) 3 , (2) the proportion of alumina particles in the reinforcing oxides, and (3) the porosity content in the resulting cast in-situ composite. The difference in particle content and porosity between the top and the bottom of the cast ingot increases with increasing processing temperature. The hardness of the cast in-situ composite is significantly more than that of the matrix alloy due to the presence of reinforcing particles, but the hardness is greatly impaired by the presence of porosity at the top of the cast ingot. The percent elongation of the cast in-situ composite decreases with increasing processing temperature possibly due to increasing porosity as well as an increasing amount of elongated intermetallic phase, which affects the percent elongation of the matrix alloy. The tensile and yield stresses of the cast in-situ composite decreases with increasing processing temperature again due to increasing porosity, which affects the ultimate tensile stress more than the yield stress. In the cast in-situ composite containing 3.31 Ϯ 0.77 vol pct of porosity, the Brinell hardness is about 6 times its yield stress. The estimated yield stress of the cast in-situ composite at zero porosity as given by the linear least-squares fit appears to increase with particle content at a significantly higher rate than that predicted by the shear-lag model.

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Section: B Mechanical Propertiesmentioning

confidence: 98%

Section: B Mechanical Propertiesmentioning

confidence: 99%

Processing, microstructure, and mechanical properties of cast In-Situ Al(Mg, Ti)-Al2O3(TiO2) composite

Hamid

Jain

Ghosh

et al. 2006

Metall Mater Trans A

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“…The required measures of SiC/Al 2 O 3 particles were added to the liquid aluminum while mixing with a stirrer at 600 rpm speed [20]. The liquid Al7075-SiC/Al 2 O 3 was filled a permanent mold and it was permitted to set.…”

Section: Processingmentioning

confidence: 99%

“…In the aluminum matrix composites, the development of tribolayer setbacks the changeovers from mild to severe wear. The exclusion of tribolayer from contact surfaces, the bulk materials becomes direct contact with the counterface and accordingly, it becomes intricate to generate another tribolayer on the heated and soft matrix [20]. Because of additional sliding, a drop in the frictional force is seen on the grounds that the mechanically mixed layer gets isolated from the pin surface, caused by delamination which exposes the fresh pin surface [21].…”

Section: Introductionmentioning

confidence: 99%

Generation of mechanically mixed layer during wear in hybrid aluminum MMC under as-cast and age hardened conditions

Rajesh¹,

Kaleemulla

Doddamani

et al. 2019

SN Appl. Sci.

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In the present investigations, dry sliding wear test is conducted using a pin on disc tribometer at room temperature for both the as-cast and age hardening conditions. Al7075 has chosen as the matrix material. The reinforcement used are particles of silicon carbide and alumina with 5 wt%, 10 wt%, and 15 wt%. Hybrid aluminum metal matrix composites are produced utilizing stir casting route for enhancing the wear behavior. In the aluminum matrix, micro-structural characterization reveals the homogeneous mixing of reinforcements. From the investigation, it is observed that composites containing 10% by weight of silicon carbide and aluminum oxide reinforcements with ageing exhibited superior tribological properties. From the micro-structural study, it has been observed that the generation of the mechanically mixed layer in the hybrid aluminum metal matrix composites will lead to a reduction in wear rate.

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“…Rao and Das [4]in stirring method the molten alloy with an impeller by integrating alumina particles, aluminiumalumina composites prepared. Prasad et al [5] wear behaviour has been observed for material with particles of semi-solid alloys and ceramic particle(s) reinforced AMCs. Reinforcement of SiC, Al2O3, Tic, C, B4C, fly ash, TiB2, Al3Zr etc.…”

Section: Introductionmentioning

confidence: 99%

An Effect of SiO2 and Carbon Nano Tubes on Mechanical Properties of LM-12 Aluminium Alloy Hybrid Metal Matrix Composite

Shetty¹,

Tjprc²

2019

IJMPERD

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The present research is aimed to develop hybrid metal matrix composite using aluminium alloy LM-12 reinforced with constant weight percentage (9%) of SiO2 and different weight percentage (wt %) carbon nano tubes. After casting different mechanical tests were conducted such as Tensile strength, Hardness and Microstructure analysis of Hybrid Metal Matrix Composite developed experimentally. The method of developing and producing new composite material using a sand mould is by stirring casting method then allowed to solidify. Tests such as tensile test, hardness and microstructure analysis are to be performed on different specimens within the casting. The composite materials so produced are tested for their mechanical properties according to ASTM standards.

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Mechanical properties of Al-10% Cu alloy particulate composites

Cited by 5 publications

References 0 publications

Processing, microstructure, and mechanical properties of cast In-Situ Al(Mg, Ti)-Al2O3(TiO2) composite

Processing, microstructure, and mechanical properties of cast In-Situ Al(Mg, Ti)-Al2O3(TiO2) composite

Generation of mechanically mixed layer during wear in hybrid aluminum MMC under as-cast and age hardened conditions

An Effect of SiO2 and Carbon Nano Tubes on Mechanical Properties of LM-12 Aluminium Alloy Hybrid Metal Matrix Composite

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