Particle sedimentation during processing of liquid metal-matrix composites

1992 ◽  
Vol 23 (6) ◽  
pp. 753-763 ◽  
Author(s):  
G. S. Hanumanth ◽  
G. A. Irons ◽  
S. Lafreniere
Keyword(s):  
Liquid Metal ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Particle Sedimentation

Infiltration-Diffusional-Solidification (IDS): A P/M+Liquid Metal Infiltration Route for Processing Metal Matrix Composites

1998 ◽  
Vol 299-300 ◽  
pp. 380-391
Author(s):  
M.J. Lopes ◽  
F.F. Bianchi ◽  
H.N. Yoshimura ◽  
Francisco Ambrozio Filho ◽  
Hélio Goldenstein
Keyword(s):  
Liquid Metal ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Liquid Metal Infiltration ◽  
Metal Infiltration

An Enthalpy Approach for the Solidification of Metal Matrix Composites

2002 ◽  
Author(s):  
E. K. Lee ◽  
R. S. Amano ◽  
P. K. Rohatgi
Keyword(s):  
Numerical Simulation ◽  
Liquid Metal ◽  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Energy Equation ◽  
Experimental Result ◽  
Matrix Composites ◽  
Solidification Of Metal

In this paper, a numerical simulation of the solidification of metal matrix composite (MMC) is presented. The metal alloy used in the MMC is Al-4.5%Cu. The simulation is based on an axisymmetric model with enthalpy formulation of the energy equation coupled with the momentum equations. The simulation will facilitate an approximation to the experimental result when the real setup is carried out in the laboratory. This paper focuses on the importance of the sink heat used at the end of the fibers to extract heat from the liquid metal.

Behavior of ceramic particles at the solid- liquid metal interface in metal matrix composites

1988 ◽  
Vol 19 (11) ◽  
pp. 2847-2855 ◽  
Author(s):  
D. M. Stefanescu ◽  
B. K. Dhindaw ◽  
S. A. Kacar ◽  
A. Moitra
Keyword(s):  
Liquid Metal ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Metal Interface ◽  
Ceramic Particles ◽  
Solid Liquid

Electron Microscopy of Metal-Matrix Composites

1970 ◽  
Vol 28 ◽  
pp. 404-405
Author(s):  
A. Lawley ◽  
M. R. Pinnel ◽  
A. Pattnaik
Keyword(s):  
Electron Microscopy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Critical Evaluation ◽  
Elastic Behavior ◽  
Matrix Composites ◽  
Directionally Solidified ◽  
Fracture Characteristics ◽  
Broad Program

As part of a broad program on composite materials, the role of the interface on the micromechanics of deformation of metal-matrix composites is being studied. The approach is to correlate elastic behavior, micro and macroyielding, flow, and fracture behavior with associated structural detail (dislocation substructure, fracture characteristics) and stress-state. This provides an understanding of the mode of deformation from an atomistic viewpoint; a critical evaluation can then be made of existing models of composite behavior based on continuum mechanics. This paper covers the electron microscopy (transmission, fractography, scanning microscopy) of two distinct forms of composite material: conventional fiber-reinforced (aluminum-stainless steel) and directionally solidified eutectic alloys (aluminum-copper). In the former, the interface is in the form of a compound and/or solid solution whereas in directionally solidified alloys, the interface consists of a precise crystallographic boundary between the two constituents of the eutectic.

TEM examination of 2014-SiC metal matrix composite

1988 ◽  
Vol 46 ◽  
pp. 726-727
Author(s):  
M. G. Burke ◽  
M. N. Gungor ◽  
P. K. Liaw
Keyword(s):  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Tensile Deformation ◽  
Microstructural Characterization ◽  
Thin Foil ◽  
Matrix Alloy ◽  
Matrix Composites ◽  
Ion Milling

Aluminum-based metal matrix composites offer unique combinations of high specific strength and high stiffness. The improvement in strength and stiffness is related to the particulate reinforcement and the particular matrix alloy chosen. In this way, the metal matrix composite can be tailored for specific materials applications. The microstructural characterization of metal matrix composites is thus important in the development of these materials. In this study, the structure of a p/m 2014-SiC particulate metal matrix composite has been examined after extrusion and tensile deformation.Thin-foil specimens of the 2014-20 vol.% SiCp metal matrix composite were prepared by dimpling to approximately 35 μm prior to ion-milling using a Gatan Dual Ion Mill equipped with a cold stage. These samples were then examined in a Philips 400T TEM/STEM operated at 120 kV. Two material conditions were evaluated: after extrusion (80:1); and after tensile deformation at 250°C.

Sign in / Sign up

Export Citation Format

Share Document