In-situ synthesis and characterization of nano-structured NiAl-Al2O3 composite during high energy ball milling

Beyhaghi, Maryam; Khaki, Jalil Vahdati; Manawan, Maykel; Rashid, Ali Reza Kiani; Kashefi, Mehrdad; Jönsson, Stefan

doi:10.1016/j.powtec.2018.01.052

Cited by 39 publications

(14 citation statements)

References 39 publications

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“…Another interesting system is Al 2 O 3 –NiAl [ 20 , 21 , 22 ] or NiAl/TiC–Al 2 O 3 [ 23 ]. Combining these ceramics with intermetallic phases allows producing composites for high-temperature and chemical-resistant applications.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the introduction of the intermetallic phase into the ceramic matrix and ceramics into the intermetallic matrix can efficiently improve the fracture toughness of composite materials of intermetallic–ceramics systems. Because of that, the NiAl–Al 2 O 3 system has been intensively investigated, especially the composites in which NiAl is a matrix and alumina is a reinforcing phase [ 22 , 24 , 25 , 26 , 27 ]. Abe and Ohwa, in their work [ 27 ] prepared NiAl–Al 2 O 3 composites by the pressureless sintering of the powders synthesized via chemical precipitation route.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, very fine reinforcement particles and their homogeneity distribution in the matrix can be obtained in the composite powder. For example, Beyhaghi et al [ 22 , 24 ] produced nanocomposite powders NiAl–Al 2 O 3 via the mechano-synthesis route. As initial substrates, Ni, NiO, and Al powders were used.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Al2O3 Samples and NiAl–Al2O3 Composite Consolidated by Pulse Plasma Sintering

et al. 2021

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The paper describes an investigation of Al2O3 samples and NiAl–Al2O3 composites consolidated by pulse plasma sintering (PPS). In the experiment, several methods were used to determine the properties and microstructure of the raw Al2O3 powder, NiAl–Al2O3 powder after mechanical alloying, and samples obtained via the PPS. The microstructural investigation of the alumina and composite properties involves scanning electron microscopy (SEM) analysis and X-ray diffraction (XRD). The relative densities were investigated with helium pycnometer and Archimedes method measurements. Microhardness analysis with fracture toughness (KIC) measures was applied to estimate the mechanical properties of the investigated materials. Using the PPS technique allows the production of bulk Al2O3 samples and intermetallic ceramic composites from the NiAl–Al2O3 system. To produce by PPS method the NiAl–Al2O3 bulk materials initially, the composite powder NiAl–Al2O3 was obtained by mechanical alloying. As initial powders, Ni, Al, and Al2O3 were used. After the PPS process, the final composite materials consist of two phases: Al2O3 located within the NiAl matrix. The intermetallic ceramic composites have relative densities: for composites with 10 wt.% Al2O3 97.9% and samples containing 20 wt.% Al2O3 close to 100%. The hardness of both composites is equal to 5.8 GPa. Moreover, after PPS consolidation, NiAl–Al2O3 composites were characterized by high plasticity. The presented results are promising for the subsequent study of consolidation composite NiAl–Al2O3 powder with various initial contributions of ceramics (Al2O3) and a mixture of intermetallic–ceramic composite powders with the addition of ceramics to fabricate composites with complex microstructures and properties. In composites with complex microstructures that belong to the new class of composites, in particular, the synergistic effect of various mechanisms of improving the fracture toughness will be operated.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of Al2O3 Samples and NiAl–Al2O3 Composite Consolidated by Pulse Plasma Sintering

et al. 2021

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“…The interfaces between the reinforcement and matrix are stable and clear. As the reinforcement, small in-situ intermetallic compound particles are able to not only improve basic properties such as strength, hardness, and the elastic modulus, but also meet the plastic deformation requirement to the greatest extent possible [19,20,21,22,23,24].…”

Section: Introductionmentioning

confidence: 99%

Study on In-Situ Synthesis Process of Ti–Al Intermetallic Compound-Reinforced Al Matrix Composites

Wan

Wang

et al. 2019

Materials

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In this study, ball-milled powder of Ti and Al was used to fabricate Ti–Al intermetallic compound-reinforced Al matrix composites by an in-situ reaction in cold-pressing sintering and hot-pressing sintering processes. The detailed microstructure of the Ti–Al intermetallic compound-reinforced Al composite was characterized by optical microscopy (OM), X-ray diffraction (XRD), energy dispersive spectrometry (EDS), and electron backscattered diffraction (EBSD). The results indicate that a typical core–shell-like structure forms in the reinforced particles. The shell is composed of a series of Ti–Al intermetallic compounds and has good bonding strength and compatibility with the Al matrix and Ti core. With cold-pressing sintering, the shell around the Ti core is closed, and the shell thickness increases as the milling time and holding time increase. With hot-pressing sintering, some radiating cracks emerge in the shell structure and provide paths for further diffusion of Ti and Al atoms. The Kirkendall effect, which is caused by the difference between the diffusion coefficients of Ti and Al, results in the formation of cavities and a reduction in density degree. When the quantity of the intermetallic compounds increases, the hardness of the composites increases and the plasticity decreases. Therefore, factors that affect the quantity of the reinforcements, such as the milling time and holding time, should be determined carefully to improve the comprehensive properties of the composites.

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“…A study for strengthening NiAl-Al2O3 composites by grain refinement was carried out using mechanosynthesis in ball milling. The crystal structure of synthesized NiAl and Al2O3 was measured in nanometer size of around 11-19 nm after 10 hours milling time, and 8 nm after being milled for 60 hours [8]. TiB2-NiAl composites were synthesized by arch melting to study the strengthening effect of TiB2 dispersion in the NiAl matrix.…”

Section: Introductionmentioning

confidence: 99%

NiAl–TiC–Al2O3 composite formed by self-propagation high-temperature synthesis process: Combustion behaviour, microstructure, and properties

Riyadi

Zhang

Marchant

et al. 2019

Journal of Alloys and Compounds

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Intermetallic-ceramic composites formed by the self-propagation high-temperature synthesis (SHS) process have attracted much interest in research development since they offer low-cost production and mechanical properties that have characteristically high performance. The objective of this work was to study the effect of reactant compositions on the combustion behaviour, microstructure and mechanical properties of the synthesized product of NiAl-TiC-Al2O3 composite. The reaction mechanism of the synthesized products was discussed based on the observations of the combustion reaction and the microstructure characterization. The results provided information on the relationship between the reactant composition, microstructure and the properties of the products of NiAl-TiC-Al2O3 composites formed by the SHS process.

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In-situ synthesis and characterization of nano-structured NiAl-Al2O3 composite during high energy ball milling

Cited by 39 publications

References 39 publications

Characterization of Al2O3 Samples and NiAl–Al2O3 Composite Consolidated by Pulse Plasma Sintering

Characterization of Al2O3 Samples and NiAl–Al2O3 Composite Consolidated by Pulse Plasma Sintering

Study on In-Situ Synthesis Process of Ti–Al Intermetallic Compound-Reinforced Al Matrix Composites

NiAl–TiC–Al2O3 composite formed by self-propagation high-temperature synthesis process: Combustion behaviour, microstructure, and properties

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