Microstructural and mechanical properties of nanometric magnesium oxide particulate-reinforced aluminum matrix composites produced by powder metallurgy method

2012 ◽  
Vol 26 (2) ◽  
pp. 367-372 ◽  
Author(s):  
Mohammad Amin Baghchesara ◽  
Hossein Abdizadeh
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Magnesium Oxide ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Powder Metallurgy Method ◽  
Matrix Composites ◽  
Particulate Reinforced

Mechanical properties of Al-Cu/B4C and Al-Mg/B4C metal matrix composites

2021 ◽  
Vol 63 (4) ◽  
pp. 350-355
Author(s):  
Mehmet Ayvaz ◽  
Hakan Cetinel
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Liquid Phase ◽  
Oxide Layer ◽  
Solid Phase ◽  
Aluminum Matrix ◽  
Liquid Phase Sintering ◽  
Aluminum Matrix Composites ◽  
Powder Metallurgy Method ◽  
Matrix Composites

Abstract To be able to successfully produce ceramic-reinforced aluminum matrix composites by using the powder metallurgy method, the wetting of ceramic reinforcements should be increased. In addition, the negative effects of the oxide layer of the aluminum matrix on sinterability should be minimized. In order to break the oxide layer, the deoxidation property of Mg can be used. Furthermore, by creating a liquid phase, both wettability and sinterability can be improved. In this study, the effects of Mg and Cu alloy elements and sintering phase on the wettability, sinterability, and mechanical properties of Al/B4C composites were investigated. For this purpose, various amounts (5, 10, 20, and 30 wt.-%) of B4C reinforced Al5Cu and Al5Mg matrix composites were produced by the powder metallurgy method. After pressing under 400 MPa pressure, composite samples were sintered for 4 hours. The sintering was carried out in two different groups as solid phase sintering at 560 °C and liquid phase sintering at 610 °C. Despite the deoxidation effect of Mg in Al5Mg matrix composites, higher mechanical properties were determined in Al5Cu composites which were sintered in liquid phase because wettability increased. The highest mechanical properties were obtained in the 20 wt.-% B4C reinforced Al5Cu sample sintered in liquid phase.

scholarly journals Titanium Dioxide Coated Graphene Nanosheets as a Reinforcement in Aluminum Matrix Composites Based on Pressure Sintering Process

2020 ◽  
Author(s):  
Zheng-Hua Guo ◽  
Qingjie Wu ◽  
Ning Li ◽  
Li-Hong Jiang ◽  
Wen He ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Titanium Dioxide ◽  
Load Transfer ◽  
Graphene Nanosheets ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Powder Metallurgy Method ◽  
Matrix Composites ◽  
The Matrix ◽  
Coating Layers

Abstract Graphene nanoplatelets (GNPs) reinforced 7075 aluminum (Al) nanocomposites were successfully synthesized using the powder metallurgy method. A novel method for optimizing interfacial bonding by coating titanium dioxide (TiO 2 ) on the surface of GNPs was proposed in this manuscript. The effects of GNPs on mechanical properties and microstructure of the aluminum matrix nanocomposites, both with and without TiO 2 coating layers, have been investigated. Experimental results showed that the corresponding mechanical properties of the nanocomposites were further improved when the GNPs have TiO 2 coating layers, compared with the addition of pure GNPs. The yield strength, ultimate tensile strength, and microhardness of the nanocomposites reinforced with TiO 2 -coated GNPs increased by 22.9%, 25.9%, and 20.1%, respectively, in comparison to those of the matrix. The further improvement of the mechanical properties could be attributed to the existence of the coating layer, which optimizes the interface bonding between the reinforcement and the matrix, thereby improving the effectiveness of load transfer.

Effects of MgO Nano Particles on Microstructural and Mechanical Properties of Aluminum Matrix Composite prepared via Powder Metallurgy Route

2012 ◽  
Vol 05 ◽  
pp. 607-614 ◽  
Author(s):  
Mohammad Amin Baghchesara ◽  
Hossein Abdizadeh ◽  
Hamid Reza Baharvandi
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Powder Metallurgy ◽  
Volume Fraction ◽  
Average Particle Size ◽  
Aluminum Matrix ◽  
Nano Particles ◽  
Aluminum Matrix Composites ◽  
Average Particle ◽  
Powder Metallurgy Method

The objective of the present investigation was to evaluate the microstructural and mechanical properties of Al /nano MgO composite prepared via powder metallurgy method. Pure atomized aluminum powder with an average particle size of 1μm and MgO particulate with an average particle size between 60 to 80 nm were used. Composites containing 1.5, 2.5 and 5 percent of volume fraction of MgO were prepared by powder metallurgy method. The specimens were pressed by Cold Isostatic Press machine (CIP), subsequently were sintered at 575, 600 and 625°C. After sintering and preparing the samples, mechanical properties were measured. The results of microstructure, compression and hardness tests indicated that addition of MgO particulates to aluminum matrix composites improves the mechanical properties.

Mechanical properties of particulate-reinforced aluminum-matrix composites

1989 ◽  
Vol 37 (9) ◽  
pp. 2395-2402 ◽  
Author(s):  
S.V. Kamat ◽  
J.P. Hirth ◽  
R. Mehrabian
Keyword(s):  
Mechanical Properties ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Particulate Reinforced

Review and Outlook of Aluminum Matrix Composites

2020 ◽  
Vol 984 ◽  
pp. 119-124 ◽  
Author(s):  
Wan Bo Zhu ◽  
Zheng Gui Zhang ◽  
Hao Nan Chen ◽  
Tie Xiao
Keyword(s):  
Powder Metallurgy ◽  
Future Development ◽  
Aluminum Matrix ◽  
Performance Characteristics ◽  
Aluminum Matrix Composites ◽  
Powder Metallurgy Method ◽  
Matrix Composites ◽  
Preparation Methods ◽  
The Past ◽  
The Future

In the past 20 years, the development of aluminum matrix composites (AMCs) has made a qualitative leap. This article comprehensively introduces the performance characteristics and the preparation methods of aluminum matrix composites. The powder metallurgy method (P/M) is elaborated in detail. And the applications of aluminum matrix composites in aerospace, automobile and other fields are described. Finally, the future development of aluminum matrix composites is prospected.

Analysis of Coefficient of Thermal Expansion and Thermal Conductivity of Bi-Modal SiC/A356 Composites Fabricated via Powder Metallurgy Route

2017 ◽  
Author(s):  
Preetkanwal Singh Bains ◽  
H. S. Payal ◽  
Sarabjeet Singh Sidhu
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Powder Metallurgy ◽  
Volume Fraction ◽  
Coefficient Of Thermal Expansion ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Powder Metallurgy Method ◽  
Matrix Composites ◽  
Sic Particulates

The present study investigates the thermal conductivity and coefficient of thermal expansion of bimodal SiCp reinforced Aluminum matrix composites formed via powder metallurgy method. The after-effects of proportion of particulate reinforcement as size distribution and sintering parameters on the thermal properties have been explored. The Box-Behnken design for response surface methodology was adopted to recognize the significance of chosen variables on the thermal conductivity and coefficient of thermal expansion of the composite. It is witnessed that the thermal conductivity and coefficient of thermal expansion enhanced due to increase in fine SiC particulates volume fraction. It has been exhibited that the fine SiC particulates (37μm) doped Al-matrix occupied interstitial positions and developed continuous SiC-matrix network. SEMs were conducted to evaluate the microstructure architecture for MMCs.

scholarly journals Al-AlN nano-structural aluminum-matrix composite manufacturing by powder metallurgy method

2019 ◽  
Vol 2019 (10) ◽  
pp. 3-11
Author(s):  
Александр Амосов ◽  
Aleksandr Amosov ◽  
Антонина Кузина ◽  
Antonina Kuzina ◽  
Юлия Титова ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Solid Phase ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composite ◽  
Nano Particles ◽  
Phase Method ◽  
Aluminum Matrix Composites ◽  
Powder Metallurgy Method ◽  
Matrix Composites ◽  
Solid Phase Method

According to the review of liquid-phase and solid-phase methods of manufacturing aluminum-matrix composites reinforced with ceramic nano-particles one can obtain cast composites having a reinforcing phase not more than 5% by weight. There is shown a possibility to manufacture Al-AlN nano-composite with considerably higher content (up to 30% by weight) AlN aluminum nitride nano-particles with the aid of a solid-phase method of powder metallurgy.

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