scholarly journals Mathematical model of the heat interaction between the metal matrix and the reinforcement phase during the production of Metal Matrix Composites

2018 ◽  
Vol 2 (1) ◽  
pp. 1-8
Author(s):  
Daniela Todorova Spasova ◽  
Krastin Krasimirov Yordanov
Keyword(s):  
Mathematical Model ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Casting Process ◽  
Temperature Fields ◽  
Matrix Composites ◽  
Casting Technology ◽  
Matrix Liquid ◽  
Casting Process Simulation ◽  
Heat Interaction

This present paper is relevant to the establishment on mathematical model of the heat interaction between the metal matrix (liquid phase- Cu) and a reinforcement (solid- Fe) phase, during the production of the Metal Matrix Composites (MMCs) by the method of capillary molding. In this case is substituted heat object with a mathematical model drawn up and grounded to investigation of the original behavior and properties, clarifies temperature fields in bodies. The established simulation clarifies temperature fields and the causal liaison between the metal matrix and the reinforcement phase in the formation of the macro and microstructure at the time of production of MMCs. Casting process simulation is an approved method for the optimization of the methods of casting technology. The basic opportunities, ideology and structure of the software "MATLAB FEA" are introduced to simulate casting technology. The possibilities of the product are illustrated by the results obtained from a computer simulation by the technical process of the production of MMCs.

CFD Simulation and Experimental Validation of Solidification of Metal Matrix Composites (MMC) in the Presence of Cooled Fibers

2004 ◽  
Author(s):  
R. S. Amano ◽  
J. Xie ◽  
E. K. Lee ◽  
P. K. Rohatgi
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Cfd Simulation ◽  
Applied Pressure ◽  
Casting Process ◽  
Processing Parameters ◽  
Matrix Composites ◽  
Primary Alpha ◽  
Parametric Studies ◽  
Solidification Of Metal

A new experimental configuration for the casting of metal matrix composites (MMCs) using Al-4.5 wt pct Cu have been used to obtain finer microstructures around the fiber reinforcement. The new configuration allows the fibers to be extended out the mold and cooled by a heat sink. By doing so, the solidification can be made more rapid, and more primary alpha-aluminum phase can be formed on the surface of the fibers. It is believed that this can lead to improvement in the properties of the composite. CFD simulation of the solidification of Al-4.5 wt pct Cu in the casting process has been carried out by using commercial CFD code. Parametric studies on the effects of different processing parameters on solidification time have been simulated using the CFD code. These parameters include, but are not limited to, the pouring temperature of the liquid melt, sink temperature, fiber length extended out of the mold, the mold initial temperature, fiber conductivity, applied pressure, and fiber bundle diameter. Selected simulation results are compared with the available experimental data obtained from the UWM Center for Composites.

Microstructure and Properties of Stir Cast AZ91 Mg Alloy – SiCp Composites

2012 ◽  
Vol 710 ◽  
pp. 365-370 ◽  
Author(s):  
Sujayakumar Prasanth ◽  
Kumaraswamy Kaliamma Ajith Kumar ◽  
Thazhavilai Ponnu Deva Rajan ◽  
Uma Thanu Subramonia Pillai ◽  
Bellambettu Chandrasekhara Pai
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Microstructural Characterization ◽  
Casting Process ◽  
Stir Casting ◽  
Tensile Fracture ◽  
Matrix Composites ◽  
Az91 Magnesium Alloy ◽  
The Matrix ◽  
Az91 Magnesium

Magnesium metal matrix composites (MMCs) have been receiving attention in recent years as an attractive choice for aerospace and automotive applications because of their low density and superior specific properties. Using stir casting process, AZ91 magnesium alloy metal matrix composites have been produced with different weight percentages (5, 10, 15, 20 and 25) of silicon carbide particles (SiCp) addition. Microstructural characterization reveals uniform distribution of SiC particles with good interfacial bonding between the matrix and reinforcement. Electrical conductivity and Co-efficient of Thermal Expansion (CTE) measurements carried out on these composites have yielded better properties. Improved mechanical properties such as hardness, ultimate tensile strength, and compressive strength are obtained. The microfracture mechanisms involved during tensile fracture is analyzed and correlated with the properties obtained.

On the Analysis of a Mathematical Model for Metal Matrix Composites Manufacturing

2003 ◽  
Vol 13 (06) ◽  
pp. 843-874 ◽  
Author(s):  
A. Farina ◽  
A. Fasano
Keyword(s):  
Mathematical Model ◽  
Metal Matrix Composites ◽  
Existence And Uniqueness ◽  
Metal Matrix ◽  
Metal Flow ◽  
Qualitative Property ◽  
Matrix Composites ◽  
Composites Manufacturing ◽  
Complete Filling ◽  
A Free Boundary Problem

We prove the existence and uniqueness theorems for a free boundary problem formulated as a mathematical model for metal matrix composites manufacturing. The process consists of the injection of a liquid metal through a rigid porous solid, accompanied by partial solidification and subsequent remelting. A technologically relevant qualitative property here investigated is a condition ensuring that solidification does not proceed to a point that the molten metal flow is stopped before the complete filling of the mould.

scholarly journals Fatigue and Fracture Behavior of Al6061-B4C Aluminium Matrix Composites

2020 ◽  
Vol 9 (4) ◽  
pp. 2121-2125
Keyword(s):  
Fracture Toughness ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Density Ratio ◽  
High Hardness ◽  
High Strength ◽  
Casting Process ◽  
Matrix Composites ◽  
Reaction Products ◽  
Automobile Engineering

In the present day engineering design and development activities many Scientists, Researchers and Engineers are striving hard to develop new and better engineering materials, which accomplishes high strength, low weight and energy efficient materials since the problems of environment and energy are major threshold areas. The development of new materials is growing day by day to replace the conventional materials in aerospace, marine engineering, automobile engineering industries etc., Hence, composite materials are found to be an alternative. A variety of metals and their alloys such as Aluminum, Magnesium and Titanium are comprehensively used as matrix materials. Among these Aluminium alloys have been used extensively, because of their excellent strength, low density, corrosion resistance and toughness. Similarly, many researchers have attempted to develop aluminum based metal matrix composites using different reinforcements such as SiC, Al2O3, B4C, TiC, TiO2, B4C etc., are added to the matrix to get required MMC’s. Among these reinforcements, B4C emerged as an exceptional reinforcement due to its high strength to density ratio, possesses high hardness and avoid the formation of interfacial reaction products with aluminum. Hence, in this paper attempts are made to fabricate Al 6061-3, 6, 9 and 12 wt.% B4C metal matrix composites by stir casting process to study fatigue life and fracture toughness as per ASTM standards. It is evident that fatigue strength and fracture toughness of the composites were enhanced with the addition of the wt.% of the reinforcement.

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