Design of In Situ Metal Matrix Composites Produced by Powder Metallurgy—A Critical Review

Deschamps, Isadora Schramm; Avila, Daniel dos Santos; Piazera, Enzo Vanzuita; Cruz, Robinson C.D.; Aguilar, C.; Klein, Aloı́sio Nelmo

doi:10.3390/met12122073

Cited by 9 publications

(5 citation statements)

References 444 publications

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“…Figure 6 schematically shows the mechanism of porosity formation at the matrixinclusion interface, as well as the presence of Ni in the volume of Mo-9Si-8B particles and silicon oxide on their surface. Since the sintering process involves the interaction of Mo belonging to the matrix and Mo in spherical Mo-9Si-8B particles, there is a possibility of the Kirkendall effect [19,26]. This effect is most clearly observed at a sintering temperature of 1400 • C. The diffusion of silicon (JSi) from the Mo3Si and Mo5SiB2 phases in the direction of the Mo matrix of the MMC is accompanied by the reverse diffusion of Mo (J Mo ) and vacancies (J v ) (Figure 6a).…”

Section: Pressure-less Sintering Of Mo Matrix Compositesmentioning

confidence: 99%

“…The use of traditional melting technology does not allow for strict control of these parameters [17]. At the same time, powder metallurgy technology allows for achieving a high level of control over the microstructure of materials, ensuring high homogeneity of the distribution of phase components [18,19]. It is also possible to modify the phase composition of the material in a wide range without significantly changing the microstructure of the material [19].…”

Section: Introductionmentioning

confidence: 99%

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Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni

Solodkyi,

Petrusha,

Grigoroscuta

et al. 2023

Metals

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Mo matrix composites (MMC) with Mo-9Si-8B inclusions were fabricated by pressure-less sintering (PLS) and spark plasma sintering (SPS) techniques at temperatures between 1200–1500 °C using 1 wt.% Ni sinter additive. The positive impact of the addition Ni addition on the sinterability and formation of a continuous Mo matrix of MMC with randomly distributed Mo3Si and Mo5SiB2 inclusions was determined. The Ni addition increased the shrinkage of MMC during PLS by almost a third. The continuous Mo matrix of MMC and a relative density of more than 98% was obtained after SPS at 1400–1500 °C. The composite with the maximum relative density of 98% showed a Vickers hardness of 482 ± 9 (HV20). The potential of using Ni-activated PLS and SPS to produce high-density MMC is shown.

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Section: Pressure-less Sintering Of Mo Matrix Compositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni

Solodkyi,

Petrusha,

Grigoroscuta

et al. 2023

Metals

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“…In powder metallurgy, metal powders are mixed with ceramic particles and consolidated under high pressure [9][10][11]. This process can produce MMCs with a uniform dispersion of ceramic particles in the metal matrix, which can significantly improve the mechanical properties of the material [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Hybrid B4C and Si3N4 Nanoparticles on the Mechanical and Physical Properties of Copper Nanocomposites

Djouider,

Alhawsawi,

Elmoujarkach

et al. 2023

Metals

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This study investigated the effects of reinforcing pure copper with hybrid B4C and Si3N4 nanoparticles on the mechanical and physical properties of the nanocomposite matrix. The composite matrix was prepared using the powder metallurgy (PM) method, allowing uniform nanoparticle dispersion within the copper matrix. The PM method was a practical approach for achieving a homogeneous and good dispersion of the reinforcing particles in the matrix while controlling the porosity and improving the microstructure of the fabricated composite matrix. The addition of B4C and Si3N4 are both very hard and dense materials. When added to a material, they can fill voids and reduce porosity. This can lead to significant improvements in the material’s mechanical properties. The study found that adding hybrid B4C and Si3N4 nanoparticles enhanced the microhardness and mechanical properties of the nanocomposites. The improvements in the mechanical and physical properties of such composites containing 5% B4C were 21.6% and 18.4% higher than the copper base alloy. The findings suggest that including ceramic particles is a viable strategy for enhancing the mechanical characteristics of copper in its pure form. For example, adding 5% B4C particles to copper resulted in a 23% increase in Young’s modulus of the material while reducing electrical conductivity by 4.6%. On the other hand, the hybrid composite Cu/5%B4C + 2.5%Si3N4 showed a 32% improvement in Young’s modulus and 71% in the microhardness value compared to the base metal. This makes it a promising option for various engineering applications, such as high-performance electrical contacts and bearings.

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“…Materials formed via reactions between metals are interesting from the viewpoint of achieving new sets of mechanical and functional properties [1][2][3][4]. The binary Cu-Al system is the basis for the fabrication of Al-based alloys [5,6], aluminum bronzes [7][8][9][10][11] as well as composite structures and joints [12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Spark Plasma Sintering and Hot Pressing of Cu+Al Powder Mixtures and Pre-Deposited Cu/Al Layers

Dudina,

Bokhonov,

Gavrilov

et al. 2023

J. Compos. Sci.

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Reactive processing of metals is interesting for materials design and achieving new sets of properties. The transformation degree of the metals, the factor governing the properties of the material as a whole, depends on the sintering/heat treatment conditions. In the present investigation, the phase and microstructure formation of materials obtained by sintering of Cu-10 wt.% Al mixtures and layered Cu/Al structures under different modes of pressing/heating is presented. The samples were obtained via spark plasma sintering (SPS), hot pressing (HP) and pressureless sintering. The products of the interaction between the metals were Al2Cu and Cu9Al4 intermetallics and Cu(Al) solid solutions. The influence of the consolidation method on the phase composition of the sintered materials was studied. The hardness of the composites was analyzed in relation to their structural features. A model experiment has been conducted to trace the structural evolution at the Cu/Al interface caused by interdiffusion. The Cu/Al layered structures obtained by detonation spraying of the powders on a steel substrate were treated by SPS or HP. The effect of electric current, which is a feature of SPS processing, was in accelerating the reaction product formation in the layered structures still containing the starting metallic reactants.

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Design of In Situ Metal Matrix Composites Produced by Powder Metallurgy—A Critical Review

Cited by 9 publications

References 444 publications

Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni

Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni

The Effect of Hybrid B4C and Si3N4 Nanoparticles on the Mechanical and Physical Properties of Copper Nanocomposites

Spark Plasma Sintering and Hot Pressing of Cu+Al Powder Mixtures and Pre-Deposited Cu/Al Layers

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