Mechanical Properties of Mg2Si/Mg Composites via Powder Metallurgy Process

Muramatsu, Hiroshi; Kondoh, Katsuyoshi; Yuasa, Eiji; Aizawa, Tatsuhiko

doi:10.1299/jsmea.46.247

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…These methods lead to the production of what is known as Mg 2 Si-dispersed magnesiumbased composite material. 6,[8][9][10][11][12][13][14][15][16][17][18][19] However, there have been no reports on improving the Young's modulus of these composited through the injection molding method. The use of the injection molding technique for producing Mg 2 Sidispersed magnesium-based composites could offer numerous advantages over existing production methods, paving the way for broader industrial applications of these composites.…”

Section: Introductionmentioning

confidence: 99%

Effect of Silicon Addition on Microstructure, Hardness and Young’s Modulus of Injection Molded AZ91D Alloy

Hideshima,

Maeda,

Fukuta

et al. 2024

Mater. Trans.

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Magnesium chips were coated with silicon powder using a binder, and injection molding was performed using silicon-coated chips as the raw material. Microstructural analysis of the products revealed that all added silicon (Si) precipitated as Mg 2 Si particles, with no voids present at the interfaces between the Mg 2 Si particles and the matrix. Furthermore, the hardness and Young's modulus of the products increased with higher Si content. The Young's moduli followed the rules of mixtures.

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Section: Introductionmentioning

confidence: 99%

Effect of Silicon Addition on Microstructure, Hardness and Young’s Modulus of Injection Molded AZ91D Alloy

Hideshima,

Maeda,

Fukuta

et al. 2024

Mater. Trans.

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“…For instance, Ponhan et al [7] prepared Mg-SiC nanocomposites with well-dispersed SiC particles by P/M. Muramatsu et al [22] fabricated Mg 2 Si/Mg composites by the P/M technique, and significant grain refinement was achieved during the P/M process.…”

Section: Introductionmentioning

confidence: 99%

Effect of Vanadium Reinforcement on the Microstructure and Mechanical Properties of Magnesium Matrix Composites

Sun

Zhou

et al. 2021

Crystals

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In this work, vanadium particles (VP) were utilized as a novel reinforcement of AZ31 magnesium (Mg) alloy. The nanocrystalline (NC) AZ31–VP composites were prepared via mechanical milling (MM) and vacuum hot-press sintering. During the milling process, the presence of VP contributed to the cold welding and fracture mechanism, resulting in the acceleration of the milling process. Additionally, increasing the VP content accelerated the grain refinement of the matrix during the milling process. After milling for 90 h, the average grain size of AZ31-X wt % Vp (X = 5, 7.5, 10) was refined to only about 23 nm, 19 nm and 16 nm, respectively. In the meantime, VP was refined to sub-micron scale and distributed uniformly in the matrix, exhibiting excellent interfacial bonding with the matrix. After the sintering process, the average grain size of AZ31-X wt % VP (X = 5, 7.5, 10) composites still remained at the NC scale, which was mainly caused by the pinning effect of VP. Besides that, the porosity of the sintered composites was no more than 7.8%, indicating a good densification effect. As a result, there was little difference between the theoretical and real density. Compared to as-cast AZ31 Mg alloy, the microhardness of sintered AZ31-X wt % VP (X = 5, 7.5, 10) composites increased by 65%, 87% and 96%, respectively, owing to the strengthening mechanisms of grain refinement strengthening, Orowan strengthening and load-bearing effects.

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“…The elastic modulus of magnesium is very low, and furthermore, owing to its very low melting point (650 C), its mechanical strength degrades rapidly with increasing temperature. Improvement of the mechanical properties of Mg alloys can be achieved by reinforcement with various ceramic particulates, as has already been well demonstrated [4,5], or by applying new Mg-based compounds (such as Mg 2 Si) as the alloy or matrix constituent [6]. An ideal alternative would be an alloy that exhibited a very low density but had a relatively high melting point and a high elastic modulus.…”

Section: Introductionmentioning

confidence: 99%

“…Several investigations on the fabrication and consolidation of either a single-phase Mg 2 Si intermetallic [4,7,10] or Al-Mg 2 Si [11][12][13], Al-Mg 2 Si-Si [14,15] and Mg-Mg 2 Si [4,5,16,17] composite samples have been reported. Mg matrix composites reinforced with Mg 2 Si particles have been successfully solid-state synthesized in situ via powder metallurgy [4,5] and more recently via a mechanically activated solid-state reaction [6].…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Testing of Prototype Mg₂Si-Mg-TiC and Mg₂Si-TiC/TiB₂Composites

Kevorkijan¹,

Škapin

2011

Materials and Manufacturing Processes

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In this work, the preparation of various light-weight Mg-Mg 2 Si-TiC metal matrix composites and Mg 2 Si-TiC/TiB 2 ceramic composites is described, and the influence of their structure on mechanical response is discussed. Mg-Mg 2 Si-TiC composites with continuous magnesium matrix densified to >95% T.D. were fabricated by pressureless reactive infiltration of performs made from Mg 2 Si and TiC powders. Infiltration was performed in an argon atmosphere at temperatures 700 , 800 , and 900 C for 1 h. Trials made with Mg 2 Si preforms reinforced with TiB 2 were unsuccessful. Mg 2 Si-TiC/TiB 2 ceramic composites densified to >97% T.D. were prepared by pressureless reactive sintering of tables made from Mg 2 Si and TiC or TiB 2 powders. The reactive sintering was performed at 1020 C for 0.5-1 h under a protective argon atmosphere. The phases present in the obtained composite samples have been identified by scanning electron microscopy (SEM)/energy dispersive X-ray spectroscopy. In addition, room temperature tensile tests and hardness measurements (HV) were also undertaken. The results show that Mg-Mg 2 Si-TiC composites are with mechanical properties GPa, and fracture toughness: 6.4-6.5 MPa m1/2) superior to that of conventional magnesium alloys, while Mg 2 Si-TiC/TiB 2 samples combined enhanced hardness (9-10 GPa) and fracture toughness (1.4-2.3 MPa m1/2) achieved in low density (2.2-2.5 g/cm3) composite structure.

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Mechanical Properties of Mg2Si/Mg Composites via Powder Metallurgy Process

Cited by 6 publications

References 2 publications

Effect of Silicon Addition on Microstructure, Hardness and Young’s Modulus of Injection Molded AZ91D Alloy

Effect of Silicon Addition on Microstructure, Hardness and Young’s Modulus of Injection Molded AZ91D Alloy

Effect of Vanadium Reinforcement on the Microstructure and Mechanical Properties of Magnesium Matrix Composites

Preparation and Testing of Prototype Mg₂Si-Mg-TiC and Mg₂Si-TiC/TiB₂Composites

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Mechanical Properties of Mg2Si/Mg Composites via Powder Metallurgy Process

Cited by 6 publications

References 2 publications

Effect of Silicon Addition on Microstructure, Hardness and Young’s Modulus of Injection Molded AZ91D Alloy

Effect of Silicon Addition on Microstructure, Hardness and Young’s Modulus of Injection Molded AZ91D Alloy

Effect of Vanadium Reinforcement on the Microstructure and Mechanical Properties of Magnesium Matrix Composites

Preparation and Testing of Prototype Mg2Si-Mg-TiC and Mg2Si-TiC/TiB2Composites

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Product

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Preparation and Testing of Prototype Mg₂Si-Mg-TiC and Mg₂Si-TiC/TiB₂Composites