Mechanical and tribological properties of zinc-aluminium metal-matrix composites

Lo, Shi-Hong; Dionne, S.; Sahoo, M.; Hawthorne, H.M.

doi:10.1007/bf01119723

Cited by 95 publications

(31 citation statements)

References 3 publications

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“…This result may be caused by a number of effects related to the particular solidification conditions during nucleation, solidification, and growth, which are both affected by the particles in the light of the results. The finer structure caused by particle addition is in concordance with the results obtained by Auras and Schvezov [4] and by Lo et al [30] and opposite to those of Karni et al [31].…”

Section: Macrostructures and Microstructures Eight Experimentssupporting

confidence: 81%

Columnar-to-Equiaxed Transition in Metal-Matrix Composites Reinforced with Silicon Carbide Particles

Ares

Schvezov

2013

Journal of Metallurgy

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The present work is focused on the study of the effect of directional heat extraction on the silicon-carbide (SiC) distribution in zinc-aluminum matrix composites (MMCs) and on the columnar-to-equiaxed (CET) position in directionally solidified samples. To this end, a ZA-27 alloy matrix was reinforced with ceramic particles of SiC and vertically directionally solidified. The cooling rates, temperature gradients, and interphase velocities were then measured, and their influence on the solidification microstructure of the MMCs was analyzed. The recalescence detected and measured during the equiaxed transition was of the order of 3.5 ∘ C to 1.1 ∘ C. The values of the temperature gradients reached a minimum during the CET and were even negative in most cases (between −3.89 K and 0.06 K). The interphase velocities varied between 0.07 mm/s and 0.44 mm/s at the transition. Also, the presence of ceramic particles in ZA-27 alloys affected the thermodynamic local conditions and the kinetics of nucleation, producing a finer microstructure.

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Section: Macrostructures and Microstructures Eight Experimentssupporting

confidence: 81%

Columnar-to-Equiaxed Transition in Metal-Matrix Composites Reinforced with Silicon Carbide Particles

Ares

Schvezov

2013

Journal of Metallurgy

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“…The data obtained con irmed the existence of Fe 4 (OH) 8 Cl(s) (Chloride green rust) and Fe 6 (OH) 12 SO 4 (s) (Sulfate green rust) on the surface of metal. It is obvious from data also that the effect of adding of increasing amounts (0.05-0.2 M) of NaHCO 3 (the pH was 8.9 for all solutions and no pH adjustment was done) to the formation water contain chloride ion decreases the anodic dissolution of carbon steel and shi ts its potential EPA to more noble direction.…”

Section: X-ray Diffraction (Xrd) Analysismentioning

confidence: 99%

“…The static immersion corrosion method was adopted to measure of the corrosion loss. The corrosion test behavior of Al 1100 alloy was studied by the immersion test [7,8]. The static immersion corrosion method was adopted to measure the corrosion loss.…”

Section: Corrosion Testmentioning

confidence: 99%

“…To minimize the contamination of the aqueous solution and loss due to evaporation, the beakers were covered with paraffin papers during the entire test period. After the specified time the samples were cleaned mechanically by using a brush in order to remove heavy corrosion deposited on the surface [8]. The corresponding changes in the weights were noted.…”

Section: Corrosion Testmentioning

confidence: 99%

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

Rd¹,

Prakash²

2017

Chem Sci J

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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.

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“…In case of monotectoid zinc-aluminium alloys of the kind studied in this investigation, primary a is the first phase to form [33] in a dendritic manner (figure 2(a), region marked by A) during solidification. This is followed by the formation of another phase b around the primary a dendrites [33].…”

Section: Microstructure and Nature Of Microconstituentsmentioning

confidence: 99%

Dry sliding wear response of zinc-based alloy over a range of test speeds and loads: a comparative study with cast iron

Prasad

2007

Tribol Lett

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This study pertains to the observations made during the sliding wear response of a zinc-based alloy in different test conditions. The effects of sliding speed and load on the wear behaviour of the alloy have been studied. The properties evaluated were wear rate, frictional heating and coefficient of friction. The wear performance of the zinc-based alloy has been compared with that of a conventional cast iron in identical test conditions. The wear rate of the samples increased with applied load and sliding speed while the seizure resistance (load) deteriorated with speed. The zinc-based alloy exhibited less wear rate and reduced frictional heating than that of the cast iron while friction coefficient followed a reverse trend. Observed wear response of the samples has been discussed in terms of specific features like lubricating, load carrying, microcracking and thermal stability of various microconstituents of the samples, and substantiated further through the features of wear surfaces, subsurface regions and debris.KEY WORDS: zinc-based alloy, cast iron, dry sliding wear behaviour, microstructure-property correlations, material removal mechanisms

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Mechanical and tribological properties of zinc-aluminium metal-matrix composites

Cited by 95 publications

References 3 publications

Columnar-to-Equiaxed Transition in Metal-Matrix Composites Reinforced with Silicon Carbide Particles

Columnar-to-Equiaxed Transition in Metal-Matrix Composites Reinforced with Silicon Carbide Particles

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

Dry sliding wear response of zinc-based alloy over a range of test speeds and loads: a comparative study with cast iron

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