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Feng, Zhihao; Lin, Chunfa; Lin, Jianping; Luo, Jing‐Li

doi:10.1023/a:1004476501524

Cited by 44 publications

(17 citation statements)

References 14 publications

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“…The sharper and more intense TO peak in the case of the processed sample is ascribed to the high temperature generation during processing [22]. It is perceived that the LO(Γ) peak intensity is reduced from~1665 au in powder sample to~1040 au in the processed samples.…”

Section: Raman Spectroscopymentioning

confidence: 94%

“…The corrosion behavior of the Al-SiC composite has been reported contradictorily by different authors. Some of them reported that Al-SiC composite shows better corrosion resistance as compared to Al alloy [18,19], while some of the authors reported low corrosion resistance in the case of Al-SiC composite as compared to Al alloy [20][21][22]. The finer size of SiC particles has better corrosion resistance as compared to the bulky particles [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…The finer size of SiC particles has better corrosion resistance as compared to the bulky particles [18][19][20]. Corrosion resistance is also improved with the increased volume fraction of SiC particles [18,19,22].…”

Section: Introductionmentioning

confidence: 99%

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Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Sharma

Sahoo

et al. 2018

J. Compos. Sci.

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Aluminium-based hybrid metal grid composites (MMC) are extensively utilized in automobile applications (engine cylinders, pistons, etc.) as they exhibit a fantastic blend of properties. Here, a detailed study of nano-mechanical, electrochemical and Raman spectroscopic behavior of friction stir processed Al6061-SiC-graphite hybrid surface composite is presented. The effect of various tool rotational speeds was evaluated along with the monitoring of variation in axial force. Microstructural changes with various tool rotational speeds are studied by using a scanning electron microscope. Raman spectroscopy and X-Ray diffraction studies are used for the spectroscopic characterization of the fabricated hybrid and mono surface composites. Residual stresses and various crystal structure disorders of reinforcement result in the significant change in intensity and a considerable shift in Raman peak positions. The nano-mechanical behavior of the fabricated composite with various reinforcements and tool rotational speeds are analyzed by using nano-indentation. The nano-mechanical behavior of hybrid composite fabricated with an optimum set of processing parameters is superior to mono composites fabricated with the same processing parameters. Also, the electrochemical behavior of the fabricated composites is studied by linear potentiodynamic polarization test. The Al6061-SiC-graphite hybrid surface composite reveals excellent nano-mechanical and electrochemical behavior when fabricated with an optimum set of processing parameters. The tool rotational speed has a pronounced effect on the dispersion of agglomerates and grain refinement of the matrix material. The processing parameters extensively affect the Raman spectroscopic behavior of the hybrid composite. The hybrid surface composite shows better corrosion resistance than the mono composites when fabricated with an optimum set of processing parameters. Reduced intergranular as well as interfacial corrosion pits in hybrid composites increased its resistance to corrosion.

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Section: Raman Spectroscopymentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Sharma

Sahoo

et al. 2018

J. Compos. Sci.

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“…It is generally accepted that the addition of reinforcements to aluminum will change the corrosion behavior significantly [7,14]. The interface in the composite may be provided numerous micro-crevice sites.…”

Section: Discussionmentioning

confidence: 99%

Improvement in the corrosion resistance of Al18B4O33w/2024Al composite by laser surface treatment

Liu

et al. 2007

Applied Surface Science

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“…Pitting corrosion often occurs in ceramic particulate reinforced Al-based MMCs. [6][7][8][9][10][11][12][13][14][15][16] Pitting is more serious for Al-based MMCs compared to unreinforced alloys. Corrosion resistance of Al-based composites is influenced by several factors such as processing conditions, microstructure, chemical composition and heat treatment, size and volume fraction of the reinforcing ceramic particulates, chloride content of the environment, etc.…”

mentioning

confidence: 99%

Corrosion Behavior of Al‐based Composites Containing In‐situ TiB₂, Al₂O₃ and Al₃Ti Reinforcements in Aerated 3.5 % Sodium Chloride Solution

Huo

Tjong

2007

Adv Eng Mater

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Aluminum-based metal-matrix composites (MMCs) reinforced with ceramic particulates exhibit high strength and elastic modulus, excellent wear resistance, near-isotropic and good high-temperature mechanical properties. [1][2][3][4] They have been used as structural materials in the automotive, aerospace and transportation industries. They are also very attractive for use as impellers and agitators in marine environments. [5] Poor corrosion resistance is a key issue for using these structural materials in marine environments. Pitting corrosion often occurs in ceramic particulate reinforced Al-based MMCs. [6][7][8][9][10][11][12][13][14][15][16] Pitting is more serious for Al-based MMCs compared to unreinforced alloys. Corrosion resistance of Al-based composites is influenced by several factors such as processing conditions, microstructure, chemical composition and heat treatment, size and volume fraction of the reinforcing ceramic particulates, chloride content of the environment, etc. The pits are commonly initiated at the flaws or heterogeneities in the passive film due to the presence of ceramic particulates and intermetallic precipitates in the MMCs. Corrosion attacks are known to occur preferentially in the vicinity of reinforcing particles or the reinforcementmatrix interface. [13,14] In addition, ceramic reinforcements also enhance precipitation of the intermetallics, promoting more pit nucleation in the composites. [8,9] For conventional Al-based MMCs fabricated via powder metallurgy route, ceramic particulates are prepared separately prior to their incorporation into aluminum matrix. Therefore, the size of reinforcements depends greatly on the initial powder diameter, typically in the order of several to tens of micrometers. Large ex-situ ceramic particles often act as stress concentrators during mechanical loading, leading to premature failure of composites. Moreover, fractured ceramic particles also serve as pit nucleation sites for the MMCs immersed in chloride containing solutions. [10] Therefore, many efforts have been directed towards the in-situ formation of ultrafine ceramic particles with uniform dispersion in metal matrices of the composites. Several techniques have been developed including exothermic dispersion (XD), reactive hot pressing (RHP), combustion-assisted cast, direct reaction synthesis, and liquid-solid or liquid-liquid reaction. [17][18][19][20][21] Among these, RHP process is attractive due to their simplicity and flexibility. Ultrafine ceramic particulates can be formed in-situ by the exothermic reaction between the element constituents of composites under hot pressing conditions. [1,19] The in-situ formed ceramic particulates exhibit thermodynamic compatibility with aluminum. The reinforcement-matrix interfaces are clean, resulting in a stronger particle-matrix bonding. The structure and mechanical behavior of Al-based MMCs reinforced with in-situ ceramic particulates are well established. [1,[18][19][20][21] However, there is no information available in the literature concerning t...

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Untitled

Cited by 44 publications

References 14 publications

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Improvement in the corrosion resistance of Al18B4O33w/2024Al composite by laser surface treatment

Corrosion Behavior of Al‐based Composites Containing In‐situ TiB₂, Al₂O₃ and Al₃Ti Reinforcements in Aerated 3.5 % Sodium Chloride Solution

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Untitled

Cited by 44 publications

References 14 publications

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Improvement in the corrosion resistance of Al18B4O33w/2024Al composite by laser surface treatment

Corrosion Behavior of Al‐based Composites Containing In‐situ TiB2, Al2O3 and Al3Ti Reinforcements in Aerated 3.5 % Sodium Chloride Solution

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Corrosion Behavior of Al‐based Composites Containing In‐situ TiB₂, Al₂O₃ and Al₃Ti Reinforcements in Aerated 3.5 % Sodium Chloride Solution