Tensile fracture behaviour of 7072/SiCp metal matrix composites fabricated by gravity die casting process

2011 ◽  
Vol 26 (5) ◽  
Author(s):  
Reddy
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Fracture Behaviour ◽  
Die Casting ◽  
Casting Process ◽  
Tensile Fracture ◽  
Matrix Composites ◽  
Die Casting Process

A Design Optimization of the High Pressure Die Casting Process for the Fabrication of Bulk Metal Matrix Composites

2017 ◽  
Vol 6 (1) ◽  
pp. 20170052
Author(s):  
B. O. Malomo ◽  
O. T. Ogunbodede ◽  
O. T. Popoola ◽  
K. M. Oluwasegun ◽  
S. A. Ibitoye ◽  
...  
Keyword(s):  
High Pressure ◽  
Design Optimization ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Die Casting ◽  
Casting Process ◽  
Matrix Composites ◽  
Bulk Metal ◽  
Die Casting Process ◽  
Pressure Die Casting

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.

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.

scholarly journals The Deformation Characteristics, Fracture Behavior and Strengthening-Toughening Mechanisms of Laminated Metal Composites: A Review

Metals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 4 ◽  
Author(s):  
Kuan Gao ◽  
Xin Zhang ◽  
Baoxi Liu ◽  
Jining He ◽  
Jianhang Feng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Fracture Behavior ◽  
Tensile Fracture ◽  
Matrix Composites ◽  
Deformation Characteristics ◽  
Toughening Mechanisms ◽  
Metal Composites ◽  
Fracture Elongation

Multilayer metal composites have great application prospects in automobiles, ships, aircraft and other manufacturing industries, which reveal their superior strength, toughness, ductility, fatigue lifetime, superplasticity and formability. This paper presents the various mechanical properties, deformation characteristics and strengthening–toughening mechanisms of laminated metal matrix composites during the loading and deformation process, and that super-high mechanical properties can be obtained by adjusting the fabrication process and structure parameters. In the macroscale, the interface bonding status and layer thickness can effectively affect the fracture, impact toughness and tensile fracture elongation of laminated metal matrix composites, and the ductility and toughness cannot be fitting to the rule of mixture (ROM). However, the elastic properties, yield strength and ultimate strength basically follow the rule of mixture. In the microscale, the mechanical properties, deformation characteristics, fracture behavior and toughening mechanisms of laminated composites reveal the obvious size effect.

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