scholarly journals Characterization of Microstructure and Hardness of Aluminum Alloy Matrix Composites Reinforced with Boron Fiber (Coarse and Fine) Particles Prepared by Powder Metallurgy Technique

2019 ◽  
Vol 8 (12) ◽  
pp. 5437-5444
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Powder Metallurgy ◽  
Fine Particles ◽  
Matrix Composites ◽  
Alloy Matrix ◽  
Boron Fiber ◽  
The Matrix ◽  
Aluminum Alloy Matrix

Powder metallurgy is one of the best methods to achieve uniform distribution of reinforcement in to the matrix. In this Paper, characterization of microstructure and hardness of aluminum alloy matrix composites reinforced with boron fiber particles prepared by powder metallurgy technique are investigated. The effects of boron fiber (Coarse particles size of 120 µm and Fine particles size of 50 µm) on mechanical properties were studied. Increasing the reinforcement of boron fiber content with 5%, 10% and15% into the matrix improved the mechanical properties. The percentage of boron fiber reinforcement increasing the strength of the hardness number is also increasing simultaneously, the aluminum alloys and boron fiber particles on the microstructure and mechanical properties of the composites were investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) with Energy dispersive spectrum (EDS) analyses indicated. Analysis and observing microstructure of the composite is boron fiber particles are uniformly dispersed in the aluminum alloy matrix composites.

Reactions at the matrix/reinforcement interface in aluminum alloy matrix composites

1995 ◽  
Vol 191 (1-2) ◽  
pp. 209-222 ◽  
Author(s):  
R. Mogilevsky ◽  
S.R. Bryan ◽  
W.S. Wolbach ◽  
T.W. Krucek ◽  
R.D. Maier ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Matrix Composites ◽  
Alloy Matrix ◽  
The Matrix ◽  
Aluminum Alloy Matrix ◽  
Matrix Reinforcement

Microstructure of graphite fibre reinforced aluminum matrix composites

1988 ◽  
Vol 46 ◽  
pp. 988-989
Author(s):  
K.-T. Chang ◽  
J.H. Mazur
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Composite Material ◽  
Aluminum Alloy ◽  
Graphite Fiber ◽  
Fiber Reinforced ◽  
Alloy Matrix ◽  
6061 Aluminum Alloy ◽  
The Matrix ◽  
Aluminum Alloy Matrix

The mechanical properties of fiber reinforced materials are determined by the mechanical properties of the individual components (i.e., the fiber and the matrix) and by the nature of the interface between these components. The interface is responsible for the transfer of the stress between the fiber and the matrix and, consequently, an understanding of the microstructure is essential in order to predict the performance of the composite system.In this work we report our preliminary investigations of the microstructure of graphite fiber reinforced 6061 aluminum alloy matrix composite material. The composite material was prepared in the form of a wire 0.65 mm in diameter from mesophase pitch base graphite fiber embedded in 6061 aluminum alloy matrix (A1 97.87%, Si 0.6%, Cu 0.28%, Mg 1.0%, Cr 0.2%, other trace elements 0.05%). Observations of the microstructure were performed on longitudinal and transverse sections of the composite material wire using light microscopy, scanning electron microscopy and transmission electron microscopy.

Mechanical and Tribological Behaviors of WAl12 Reinforced 2024 Aluminum Alloy Matrix Composites

2020 ◽  
Vol 993 ◽  
pp. 60-67
Author(s):  
Jin Hao Wu ◽  
You Hong Sun ◽  
Qing Nan Meng ◽  
Chi Zhang ◽  
Su Su Peng
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Room Temperature ◽  
Intermetallic Phase ◽  
Tensile Fracture ◽  
Matrix Composites ◽  
Friction Behavior ◽  
2024 Aluminum Alloy ◽  
Alloy Matrix ◽  
Aluminum Alloy Matrix

WAl12 reinforced 2024 aluminum alloy matrix composites were prepared by powder metallurgy with tungsten particles and W50Al50 alloy particles. The effects of WAl12 on the mechanical properties of 2024 aluminum alloy composites at room temperature and high temperature were studied, and the friction behavior was characterized. The results show that intermetallic WAl12 phase forms in the composite by 2024 aluminum alloy and tungsten. The mechanical properties and friction behavior can be improved by the formation of intermetallic WAl12 phase. The tensile strength of 2024 aluminum alloy at room temperature and 180 °C can be improved by adding tungsten less than 1.5 at.%. Adding 2.0 at.% tungsten can reduce the friction coefficient by 20 % and the scratch width by 40 %. The tensile fracture surface of the sample was analyzed by scanning electron microscopy (SEM), indicating that WAl12 intermetallic phase is closely connected with the aluminum matrix.

Recycled Aluminum Alloy Matrix Composites with Artificial Pellets Made of Incineration Ashes

2007 ◽  
Vol 561-565 ◽  
pp. 1653-1656
Author(s):  
Yoshitaka Iwabuchi ◽  
Isao Kobayashi
Keyword(s):  
Thermal Conductivity ◽  
Composite Material ◽  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Matrix Composites ◽  
Trial And Error ◽  
Alloy Matrix ◽  
Research Article ◽  
Aluminum Alloy Matrix ◽  
Incineration Ashes

This research article describes the newly developed composite material using the artificial pellets made of incineration ashes and recycled aluminum alloys. The factor affecting its various properties was investigated and discussed. Through trial and error, the hybrid preform with good soundness and preferable dispersion of the pellets could be obtained. The density and compression strength and thermal conductivity were measured in comparison of other structural materials.

Effect of the Matrix and Reinforcement Sizes on the Microstructure, the Physical and Mechanical Properties of Al-SiC Composites

2016 ◽  
Vol 139 (1) ◽  
Author(s):  
M. A. Salem ◽  
I. G. El-Batanony ◽  
M. Ghanem ◽  
Mohamed Ibrahim Abd ElAal
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Volume Fraction ◽  
Physical And Mechanical Properties ◽  
Particle Sizes ◽  
Matrix Composites ◽  
Volume Fractions ◽  
The Matrix ◽  
Sic Composites ◽  
Sic Particle

Different Al-SiC metal matrix composites (MMCs) with a different matrix, reinforcement sizes, and volume fractions were fabricated using ball milling (BM) and powder metallurgy (PM) techniques. Al and Al-SiC composites with different volume fractions were milled for 120 h. Then, the Al and Al-SiC composites were pressed under 125 MPa and finally sintered at 450 °C. Moreover, microsize and combination between micro and nano sizes Al-SiC samples were prepared by the same way. The effect of the Al matrix, SiC reinforcement sizes and the SiC volume fraction on the microstructure evolution, physical and mechanical properties of the produced composites was investigated. The BM and powder metallurgy techniques followed by sintering produce fully dense Al-SiC composite samples with different matrix and reinforcement sizes. The SiC particle size was observed to have a higher effect on the thermal conductivity, electrical resistivity, and microhardness of the produced composites than that of the SiC volume fraction. The decreasing of the Al and SiC particle sizes and increasing of the SiC volume fraction deteriorate the physical properties. On the other hand, the microhardness was enhanced with the decreasing of the Al, SiC particle sizes and the increasing of the SiC volume fraction.

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