scholarly journals Influence of composition and distribution of the reinforcing particles on fatigue properties of metal matrix composites

1993 ◽  
Vol 03 (C7) ◽  
pp. C7-1763-C7-1767
Author(s):  
E. HOCHREITER ◽  
F. JEGLITSCH
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Fatigue Properties ◽  
Matrix Composites ◽  
Reinforcing Particles

scholarly journals Tensile and fatigue properties of fiber-reinforced metal matrix composites Cf/5056Al

2021 ◽  
Vol 30 ◽  
pp. 2633366X2092971
Author(s):  
Ying Ba ◽  
Shu Sun
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
High Strength ◽  
Longitudinal Direction ◽  
Fatigue Properties ◽  
Matrix Composites ◽  
Weak Interface ◽  
Fiber Reinforced ◽  
Alloy Matrix ◽  
Medium Strength

Fiber-reinforced metal matrix composites have mechanical properties highly dependent on directions, possessing high strength and fatigue resistance in fiber longitudinal direction achieved by weak interface bonding. However, the disadvantage of weak interface combination is the reduction of transversal performances. In this article, tensile and fatigue properties of carbon fiber-reinforced 5056 aluminum alloy matrix (Cf/5056Al) composite under the condition of medium-strength interface combination are carried out. The fatigue damage mechanisms of Cf/5056Al composite under tension–tension and tension–compression loads are not the same, but the fatigue life curves are close, which may be the result of the medium-strength interface combination.

Oxidation Behavior of BN/(Al-Mg) Metal Matrix Composites

2005 ◽  
Vol 475-479 ◽  
pp. 975-978
Author(s):  
W.S. Woo ◽  
Woo Gwang Jung ◽  
Dong Bok Lee
Keyword(s):  
Metal Matrix Composites ◽  
Oxidation Resistance ◽  
Metal Matrix ◽  
Oxidation Behavior ◽  
Oxidation Mechanism ◽  
Pressureless Infiltration ◽  
Matrix Composites ◽  
Preferential Oxidation ◽  
Reinforcing Particles ◽  
Infiltration Technique

Metal matrix composites (MMCs) that consisted of Al-Mg matrix reinforced with initially added BN particles were fabricated using the pressureless infiltration technique, and their oxidation behavior was investigated at 500 and 550oC in air. Initially added BN particles were partly consumed to make AlN, as another reinforcing particles. Another reaction product was MgAlB2 dispersoids. Despite of the presence of these reinforcing particles, the oxidation resistance was not good owing to the formation of MgO-rich scale due to the preferential oxidation of Mg in the MMCs. Detailed microstructures and oxidation mechanism of the prepared MMCs are proposed.

scholarly journals Effect of Forging Parameters on Low Cycle Fatigue Behaviour of Al/Basalt Short Fiber Metal Matrix Composites

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
R. Karthigeyan ◽  
G. Ranganath
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Low Cycle Fatigue ◽  
Matrix Alloy ◽  
Short Fiber ◽  
Fatigue Properties ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
The Matrix ◽  
Fracture Damage

This paper deals with metal matrix composites (MMCs) of Al 7075 alloy containing different weight percentage (2.5, 5, 7.5, and 10) basalt short fiber reinforcement and unreinforced matrix alloy. The samples were produced by the permanent stir casting technique. The casting ingots were cut into blanks to be forged in single stage and double stage, using MN press and graphite-based lubricant. The microstructures and fatigue properties of the matrix alloy and MMC samples were investigated in the as cast state and in the single and double stage forging operations. The microstructure results showed that the forged sample had a uniform distribution of the basalt short fiber throughout the specimens. Evaluation of the fatigue properties showed that the forged samples had higher values than those of the as cast counterparts. After forging, the enhancement of the fatigue strength of the matrix alloy was so significant and high in the case of 2.5 and 5.0 wt. percentage basalt short fiber reinforced MMC, and there was no enhancement in 7.5 and 10 weight percentages short fiber reinforced MMCs. The fracture damage was mainly due to decohesion at the matrix-fiber interface.

scholarly journals Microstructural Characterization of TiC-Reinforced Metal Matrix Composites Fabricated by Laser Cladding Using FeCrCoNiAlTiC High Entropy Alloy Powder

2021 ◽  
Vol 11 (14) ◽  
pp. 6580
Author(s):  
Sangwoo Nam ◽  
Hyung Won Lee ◽  
In-Ho Jung ◽  
Young-Min Kim
Keyword(s):  
Metal Matrix Composites ◽  
Laser Cladding ◽  
Heat Input ◽  
Metal Matrix ◽  
Alloy Powder ◽  
Coating Layer ◽  
High Entropy Alloy ◽  
Matrix Composites ◽  
High Entropy ◽  
Reinforcing Particles

TiC-reinforced metal matrix composites were fabricated by laser cladding and FeCrCoNiAlTiC high entropy alloy powder. The heat of the laser formed a TiC phase, which was consistent with the thermodynamic calculation, and produced a coating layer without interfacial defects. TiC reinforcing particles exhibited various morphologies, such as spherical, blocky, and dendritic particles, depending on the heat input and coating depth. A dendritic morphology is observed in the lower part of the coating layer near the AISI 304 substrate, where heat is rapidly transferred. Low heat input leads to an inhomogeneous microstructure and coating depth due to the poor fluidity of molten pool. On the other hand, high heat input dissolved reinforcing particles by dilution with the substrate. The coating layer under the effective heat input of 50 J/mm2 had relatively homogeneous blocky particles of several micrometers in size. The micro-hardness value of the coating layer is over 900 HV, and the nano-hardness of the reinforcing particles and the matrix were 17 GPa and 10 GPa, respectively.

Structure Analysis of the Modified Cast Metal Matrix Composites by Use of the Rve Theory

2013 ◽  
Vol 58 (2) ◽  
pp. 357-360 ◽  
Author(s):  
P. Kurtyka ◽  
N. Rylko
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Three Dimensional ◽  
Volume Element ◽  
Matrix Composites ◽  
Reinforced Composites ◽  
Initial State ◽  
Reinforcing Particles ◽  
Three Dimensional Models ◽  
Properties Of Composites

The paper presents applications of a new theory of the representative volume element (RVE) based on the Mityushev- Eisenstein-Rayleigh sums (M-sums) to describe particle-reinforced composites. This theory is applied to study F3K.10S metal matrix composites reinforced SiC particles. The most important M-sum e2 is calculated for the initial state as e2 = -0.00206281. This shows considerable heterogeneity of distribution of reinforcing particles and its anisotropic properties. Further, the results are compared with the results obtained by the FSP. It is established that the use of a single FSP process causes a significant change in the distribution of particles reinforcing phase when the value e2 becomes 3.19488. It follows from Mityushev’s theory that e2=π corresponds to isotropic distributions. The article confirms that the new RVE theory resolves the problem of the constructive pure geometrical description of the properties of composites. Further work requires the optimization and extension of the theory to three-dimensional models.

Fatigue properties of particle-reinforced metal-matrix composites

1993 ◽  
Vol 15 (6) ◽  
pp. 493-499 ◽  
Author(s):  
E. Hochreiter ◽  
M. Panzenböck ◽  
F. Jeglitsch
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Fatigue Properties ◽  
Matrix Composites
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