Fabrication of Aluminium AA7075 Reinforced by Zinc Metal Matrix Composites and Their Wear Behaviour Analysis

Manandhar, Dinesh; Ravindran, Ravishankar

doi:10.15407/mfint.39.11.1497

Cited by 2 publications

(1 citation statement)

References 23 publications

(20 reference statements)

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“…During sintering of metal-glass materials, glass is sitalized [1] and it is necessary to develop such modes of glass that would ensure crystallization in the entire volume of glass inclusions, which contributes to an increase in the strength of the material [2]. In addition, when glass is in contact with iron for a long time in the temperature range 1000-1200 °C, the glass becomes greenish, which indicates its saturation with iron [3].…”

Section: Introductionmentioning

confidence: 99%

Saturation of Glass Particles With Metal During Sintering of a Composite Material of the Iron–cast Iron–glass System

2021

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Sintering of multicomponent systems is characterized by a number of features, consisting in the fact that sintering of dissimilar materials is a complex eutectic process. Along with self-diffusion, which causes the transfer of mass to the contact area of the particles, there is mutual diffusion, which ensures the homogenization of the composition by equalizing the concentrations of unlike atoms within the sample. Under conditions of limited solubility or complete insolubility of the components, sintering of the system is complicated by the isolation of homogeneous particles from mutual contact, hindering self-diffusion and thereby worsening the sintering conditions. The saturation of particles of vacuum glass brand S88–5 (GOST 11.027.010–75, Russia) and glass “Pyrex” (TS, Russia), which are part of iron and “iron-cast iron glass” materials, depending on the sintering temperature, has been studied. To improve the interfacial interaction, and, consequently, to increase the mechanical and tribotechnical properties of powdered iron-glass materials, the effect of the glass melting temperature on the saturation of glass with metal was investigated. The dependences of the content of base metal and silicon ions in glass on the sintering temperature are plotted. The effect of the glass melting temperature on increasing the saturation of glass with metal is predicted. The saturation of the glass with the base metal depends on the viscosity of the glass at sintering temperatures and is accompanied by an increase in microhardness and refractive indices up to 1.2 times compared to the initial state of the glass. The microhardness of particles of vacuum glass of grade S88-5 after sintering of metal-glass samples increases noticeably than in samples with Pyrex glass. When sintering "iron-cast iron-glass" materials, the metal base is saturated with silicon, which leads to an increase in the hardness of iron up to 1.8 times

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Section: Introductionmentioning

confidence: 99%

Saturation of Glass Particles With Metal During Sintering of a Composite Material of the Iron–cast Iron–glass System

2021

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Characterization and Properties of Mg–TiO$_2$ Composites Produced $via$ Ball Milling and Powder Metallurgy

Stalin¹,

Vidhya²,

Ravichandran³

et al. 2020

Metallofiz. Noveishie Tekhnol.

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The new magnesium matrix composites reinforced with different weight fractions (0, 4, 8, 12) of TiO 2 particles are fabricated by powder metallurgy. The ball milled powders are compacted and sintered for further mechanical and characterization studies. With the increasing weight percentage of TiO 2 particles, the particles gradually show more homogeneous distribution in the matrix. Compared with the matrix, the compressive strength of the composites is improved. With the increasing TiO 2 contents from 0 to 12% wt., the ultimate compressive strength increases from 82 to 158 MPa, respectively, while the corresponding strain decreases. The improvement of the ultimate compressive strength and hardness of the Mg-TiO 2 composites is due to the homogeneous microstructure of TiO 2 in Mg matrix. Energy dispersive X-ray spectroscopy and scanning electron microscopy are used to study the morphology and distribution of reinforcements in the matrix material. An identical distribution of TiO 2 parti

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Fabrication of Aluminium AA7075 Reinforced by Zinc Metal Matrix Composites and Their Wear Behaviour Analysis

Cited by 2 publications

References 23 publications

Saturation of Glass Particles With Metal During Sintering of a Composite Material of the Iron–cast Iron–glass System

Saturation of Glass Particles With Metal During Sintering of a Composite Material of the Iron–cast Iron–glass System

Characterization and Properties of Mg–TiO$_2$ Composites Produced $via$ Ball Milling and Powder Metallurgy

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