Journal ArticleDOI
Synthesis, characterization and properties of stir cast AA6351-aluminium nitride (AlN) composites
TLDR
In this article, the AA6351-AlN composites were characterized using scanning electron microscope (SEM) and x-ray diffraction (XRD) and the mechanical properties such as micro-hardness, compression strength, flexural strength and tensile strength of the proposed composite have been studied.Abstract:
In the present investigation, AA6351 aluminum alloy matrix composites reinforced with various percentages of AlN particles were fabricated by stir casting technique. The percentage of AlN was varied from 0 to 20% in a step of 4%. The prepared AA6351-AlN composites were characterized using scanning electron microscope (SEM) and x-ray diffraction (XRD). The mechanical properties such as micro-hardness, compression strength, flexural strength, and tensile strength of the proposed composite have been studied. X-ray diffraction patterns confirm the presence of AlN particles in the composites. SEM analysis reveals the homogeneous distribution of AlN particles in the AA6351 matrix. The mechanical properties of the composite were found to be noticeably higher than that of the plain matrix alloy due to augmented particle content. The produced composites exhibit superior mechanical properties when compared with unreinforced matrix alloy. Fracture surface analysis of tensile specimens show the ductile–brittle nature of failure in the composites.read more
Citations
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Influence of AlN particles on microstructure, mechanical and tribological behaviour in AA6351 aluminum alloy
TL;DR: In this article, a study was conducted using AA6351 aluminum alloy in conjunction with AlN particles whose percentages of incorporation were 4, 8, 12, 16% and 20 wt.% in the ascending order.
Journal ArticleDOI
Experimental investigation on mechanical properties of AA7075-AlN composites
TL;DR: Hard ceramic particle reinforced aluminum matrix composites (AMCs) are considered a distinct category of advanced materials which command outstanding strength, good corrosion resistance an... as mentioned in this paper, and good lifetime.
Journal ArticleDOI
Microstructural and tribological characteristics of AA6351/Si3N4 composites manufactured by stir casting
TL;DR: In this article, Al-Si-Mg is employed as matrix material and silicon nitride (Si3N4) particles as reinforcement material to manufacture the aluminum composites (AMCs).
Journal ArticleDOI
Mechanical and microstructural characterization of AA7178-TiB2 composites
TL;DR: In this article, an aluminum alloy AA7178 was reinforced with three different weight fractions (3, 6 and 9 wt.-%) of titanium diboride (TiB2) particles which were efficacious.
Journal ArticleDOI
Processing issues, machining, and applications of aluminum metal matrix composites
Jigar Suthar,Kaushik M. Patel +1 more
TL;DR: In this article, issues related to AMMC fabrication, corrosion resistance, wear resistance, machining parameter optimization, and chip analysis of AMMCs are discussed. And the authors provide a guideline to researchers about present scenario of AM MC fabrication using stir casting process.
References
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Journal ArticleDOI
Comparison of microstructure and mechanical properties of A356 aluminum alloy/Al2O3 composites fabricated by stir and compo-casting processes
TL;DR: In this article, nano and micro-composites (A356/Al 2 O 3 ) with different weight percent of particles were fabricated by two melt techniques such as stir-casting and compo-casting.
Journal ArticleDOI
Effect of mechanical alloying on the morphology, microstructure and properties of aluminium matrix composite powders
TL;DR: In this paper, a high-energy attritor mill was used to determine the steady state of the process and the particle size distribution and the microhardness of the mechanically alloyed particles were determined.
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Microstructure and mechanical properties of Al-Al2O3 micro and nano composites fabricated by stir casting
TL;DR: In this article, a three-step mixing method was used to improve the wettability and distribution of reinforcement particles within the matrix, which included heat treatment of micro and nano Al2O3 particles, injection of heat-treated particles, and stirring the melt at different speeds.
Journal ArticleDOI
Influence of B4C on the tribological and mechanical properties of Al 7075–B4C composites
A. Baradeswaran,A. Elaya Perumal +1 more
TL;DR: In this article, the influence of B 4 C on the mechanical and Tribological behavior of Al 7075 composites is identified, and the test results showed increasing hardness of composites compared with the base alloy because of the presence of the increased ceramic phase.
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Synthesis and characterization of in situ formed titanium diboride particulate reinforced AA7075 aluminum alloy cast composites
TL;DR: In this paper, in situ reaction of inorganic salts such as K 2 TiF 6 and KBF 4 to molten aluminum was shown to enhance the microhardness and ultimate tensile strength of aluminum matrix composites.