Analysis of Mechanical Properties of AMC Fabricated by Vacuum Stir Casting Process

Singh, Jeet; Jawalkar, C. S.; Belokar, R. M.

doi:10.1007/s12633-019-00338-8

Cited by 31 publications

(14 citation statements)

References 29 publications

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“…The ceramic particles correlate with dislocations which lead to improvement in the tensile strength. Similar outcomes have been observed by different researchers [22][23][24]. It was observed that there was an improvement in the tensile strength of heat treated MMCs when compared to as received condition.…”

Section: Resultssupporting

confidence: 90%

Experimental studies of different quenching media on mechanical and wear behavior of Al7075/SiC/Al2O3 hybrid composites

Ravikumar¹,

Reddappa

Suresh

et al. 2020

Frattura Ed Integrità Strutturale

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The effects of SiC-Al2O3 particle in the Al alloy on the mechanical and wear characteristics of stir-casted Composites have been reported. The Al7075 is reinforced with 2, 4, 6 and 8 wt. % of (SiC + Al2O3) to manufacture the hybrid composite. Ceramic particulates were added into Al alloy to achieve the low wear rate and improving mechanical properties. Hardening of casted specimens at 480ºC for the duration of 2 hrs and the specimens were quenched into two different quenching media (water and ice cubes). Finally, age-hardening were carried out at the temperature of 160ºC for the duration of 4 hrs and cooled at room temperature. The tensile strength, hardness and wear behaviour of MMCs are evaluated on the un-treated and heat treated composite. The tensile strength and hardness of MMCs increases by incorporating SiC-Al2O3 particulates. The wear behaviour of the MMCs containing SiC-Al2O3 particulates revealed the high wear-resistance. The heat-treatment had considerably improved the properties when compared to the un-heat treated composites. The composites with the highest tensile strength, hardness and enhanced wear resistance were found in the composites quenched in ice cubes. Worned surfaces of the composite specimens were studied by using SEM and XRD analysis

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Section: Resultssupporting

confidence: 90%

Experimental studies of different quenching media on mechanical and wear behavior of Al7075/SiC/Al2O3 hybrid composites

Ravikumar¹,

Reddappa

Suresh

et al. 2020

Frattura Ed Integrità Strutturale

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“…Furthermore, the study presented in this paper focused on Figure 12. SEM images of samples S0 at different magnifications [2,3,5,16] used many types of reinforcement like, Al2O3, SiC, TiC, Gr, TiO2, and B4C, where these reinforcements have more advantages over its matrix material and still having the cost barrier. Also, other studies in the literature used industrial waste martials like red mud [1,16] , and industrial and agro waste like fly ash, groundnut shell, rice husk ash and bagasse ash [16,21] in reinforcement of AMMC composites.…”

Section: Fracture Resultsmentioning

confidence: 99%

“…For the past decades ceramic-reinforced aluminum metal matrix composites AMMCs materials have proved their dominance in many applications such as field of automobile and marine due to their superior properties *Corresponding Author Email: mohsin.aswad@gmail.com (M. A. Aswad) such as high strength-to-weight ratio, corrosion resistance and superior tribological properties [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…The selection of suitable matrix and reinforcement materials are being the main challenge in the fabrication of AMMCs [1]. Currently, researchers are showing immense interest to strengthening of AMMCs with ceramic materials such as silicon carbide, boron carbide and zirconium oxide [3,5]. Many studies have investigated the natural advantage of preparation of composites from minerals such as bauxite particles, and proved their effectiveness as cost effective reinforcing agents in fabrication of high performance composites [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Study on Iraqi Bauxite Ceramic Reinforced Aluminum Metal Matrix Composite Synthesized by Stir Casting

Aswad

Awad

Kaayem

2020

IJE

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For the past decades researchers are showing immense interest to investigate the natural advantage of preparation of composites from minerals such as bauxite particles, and proved their effectiveness as cost effective reinforcing agents in fabrication of high performance composites. This study, is a new attempt in using the Iraqi natural bauxite powder with different proportions (2, 4 and 6 wt%) in preparation of aluminum metal matrix composites (AMMCs) using stir casting and Mg additives. In experimental work, the bauxite stones were crashed and milled, then the powder was fired at 1400 ○ C. The powders were characterized using particle size, XRD and XRF analysis. The AMMCs casts were machined, polished, preheated, and their properties were characterized using hardness measurements, microstructural observations, and calculation of their Young's modulus, Poisson's ratio and fracture toughness. Also, their fracture toughness were evaluated by means of crack mouth opening displacement (CMOD) measurements from extensometer recordings. The results proved the successful production of AMMCs with improved fracture toughness, hardness and elastic modulus properties using Mg and Iraqi fired bauxite added at 2 and 4 wt% by stir casting. Moreover, results from CMOD measurements showed the effect of addition bauxite particles at 2 and 4 wt% in increasing "maximum load at failure" and "critical CMOD at critical load" of the matrix materials to about " 25 and 44%" , and " 32 and 47%", respectively. Also, at these ratios, the calculated fracture toughness of the matrix materials by means of KIC, and young modulus showed improvement at about "22 and 69%", and "8 and 12%", respectively. Addition of bauxite at 6% could not give the required improvement in the fracture toughness despite its effects in recording the highest improvements in hardness (57%) and elastic modulus (22%) due to the brittle behavior of AMMCs at this ratio.

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“…Powders are much elongated during the sintering process, the ductility behavior was quite low compared with the conventional casted piece [30,31].…”

Section: Hardnessmentioning

confidence: 99%

Influence of Nano-Silica in Al6061 Composites on Mechanical and Material Properties prepared through Powder Metallurgy

Kumar¹,

Nath²,

Babu³

2021

Preprint

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The influence of composites preparation methods in the aerospace industry has evolved quite new challenges achieving better and desired properties. In this context, this work deals with the preparation of nano silica-based composite through the powder metallurgy technique. The composites prepared were tested for material characterization with morphological, X-Ray diffraction, and mechanical characterization with hardness, tensile strength, density, and porosity tests. The results revealed that the nano-silica has interfacial interaction with aluminum alloy. The strength of Al6061 nano-silica composite has the effect of sintering and compaction processes. Crystallization of Al6061 composite has been influenced by sintering time for nano-silica reinforcement. A compound was formed during the ball milling process during the blending of Al6061 and nano-silica powders was examined and detailed through material characterization. It revealed the structure as a mesoporous structure which created a route for better-impregnated bearing material. Al6061 nano-silica impregnated bearing with porous structure holds the lubricating fluid which is serving the purpose of self-lubrication and self-cooling by dissipating the heat generated during the running conditions. The strengthening mechanism like the Orowan effect and dislocation density strengthening enhanced the process and revealed the effect on nano-silica content. The wettability of silica was improved through binder in PM and the preheating process of powders. Hardness incremented up to 21% of base alloy through the PM technique.

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Analysis of Mechanical Properties of AMC Fabricated by Vacuum Stir Casting Process

Cited by 31 publications

References 29 publications

Experimental studies of different quenching media on mechanical and wear behavior of Al7075/SiC/Al2O3 hybrid composites

Experimental studies of different quenching media on mechanical and wear behavior of Al7075/SiC/Al2O3 hybrid composites

Study on Iraqi Bauxite Ceramic Reinforced Aluminum Metal Matrix Composite Synthesized by Stir Casting

Influence of Nano-Silica in Al6061 Composites on Mechanical and Material Properties prepared through Powder Metallurgy

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