scholarly journals Microstructure, Mechanical Properties and Wear Behavior of the Rheoformed 2024 Aluminum Matrix Composite Component Reinforced by Al2O3 Nanoparticles

Metals ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 460 ◽  
Author(s):  
Jufu Jiang ◽  
Guanfei Xiao ◽  
Changjie Che ◽  
Ying Wang
Keyword(s):  
Mechanical Properties ◽  
Matrix Composite ◽  
Wear Behavior ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composite ◽  
Al2o3 Nanoparticles ◽  
Composite Component

scholarly journals Wear Dry Behavior of the Al-6061-Al2O3 Composite Synthesized by Mechanical Alloying

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1652
Author(s):  
Víctor Hugo Mercado-Lemus ◽  
Cynthia Daisy Gomez-Esparza ◽  
Juan Carlos Díaz-Guillén ◽  
Jan Mayén-Chaires ◽  
Adriana Gallegos-Melgar ◽  
...  
Keyword(s):  
Mechanical Alloying ◽  
Load Transfer ◽  
Wear Behavior ◽  
Aluminum Matrix ◽  
High Energy ◽  
Aluminum Matrix Composite ◽  
Al2o3 Nanoparticles ◽  
Protective Behavior ◽  
Al 6061 ◽  
The Matrix

The present research deals with the comparative wear behavior of a mechanically milled Al-6061 alloy and the same alloy reinforced with 5 wt.% of Al2O3 nanoparticles (Al-6061-Al2O3) under different dry sliding conditions. For this purpose, an aluminum-silicon-based material was synthesized by high-energy mechanical alloying, cold consolidated, and sintered under pressureless and vacuum conditions. The mechanical behavior was evaluated by sliding wear and microhardness tests. The structural characterization was carried out by X-ray diffraction and scanning electron microscopy. Results showed a clear wear resistance improvement in the aluminum matrix composite (Al-6061-Al2O3) in comparison with the Al-6061 alloy since nanoparticles act as a third hard body against wear. This behavior is attributed to the significant increment in hardness on the reinforced material, whose strengthening mechanisms mainly lie in a nanometric size and homogeneous dispersion of particles offering an effective load transfer from the matrix to the reinforcement. Discussion of the wear performance was in terms of a protective thin film oxide formation, where protective behavior decreases as a function of the sliding speed.

scholarly journals Study on Properties of Multi Walled Carbon Nanotube Reinforced Aluminum Matrix Composite through Casting Technique

2021 ◽  
Vol 18 (1) ◽  
pp. 97-101
Author(s):  
Shuib Pasha S A ◽  
Nayeem Ahmed M ◽  
Tilak S R ◽  
Anil Kumar B N
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Matrix Composite ◽  
Research Work ◽  
Aluminum Matrix ◽  
Stir Casting ◽  
Optical Microscope ◽  
Aluminum Matrix Composite ◽  
Casting Technique ◽  
Multi Walled Carbon Nanotubes

Composite materials are defined as material systems consisting of mixture of or combination of two or more micro constituents insoluble in each other and differing in form and or material composition. In this study Metal Matrix Composite (MMCs) has been produced using stir casting method for performing the mechanical properties. Most of the engineering industries want light and better mechanical properties of components; this can be achieved by MMCs of Aluminium because of its excellent performance. In this research work we fabricate the Aluminium by liquid route. Here Al 7075 is used as a base metal and Multi Walled Carbon Nanotubes (MWCNT) used as sub metal with various percentages. Experiments were conducted to analyze microstructure, hardness & tensile strength. By using optical microscope and Scanning Electron Microscope (SEM) we analyze the sample specimens are well dispersion in MWCNT with AA 7075. Hardness and tensile strength increases with increasing of wt. %. Hardness of material increases with increase in percentages of MWCNT, whereas tensile strength of the material increases with increase in percentages of MWCNT and Elongation reduces

scholarly journals ADDITION OF MAGNESIUM (Mg) WITH ALUMINA (AL2O3) REINFORCER IN ALUMINUM MATERIAL COMPOSITES ON THE MECHANICAL PROPERTIES AND MICRO STRUCTURES

2021 ◽  
Vol 2 (2) ◽  
pp. 7-13
Author(s):  
Basuki Widodo ◽  
Agung Panji Sasmito
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Matrix Composite ◽  
Volume Fraction ◽  
Aluminum Matrix ◽  
Casting Process ◽  
Magnesium Content ◽  
Aluminum Matrix Composite ◽  
Aluminum Matrix Composites ◽  
Low Density

Aluminum is a widely used and applied material in daily life or in the industrial and automotive world. In order to improve the performance and properties of the application to be used, it needed an alloying element to improve the mechanical properties of the aluminum. Aluminum Matrix Composite (AMC) or better known as aluminum matrix composite is one type of material that has great potential to be developed, due to its good combination and properties such as high strength and hardness, low density, low density, capable of good machining, and its basic ingredients are easily found on the market and cheaper than other materials. This research was conducted using the stir casting process to be able to mix all the compositions contained in aluminum matrix composites and to help the distribution of alumina reinforcing particles (Al2O3) and aluminum matrices be evenly distributed. The parameters used in this casting process are varying the volume fraction of the Al2O3 amplifier by 0.5%; 1.5% and 2.5% plus the magnesium content remains 0.9%. The results showed that the addition of Al2O3 can increase the value of hardness and reduce the value of tensile strength. The highest hardness value was 75.3 HRB at the addition of Al2O3 by 2.5% and the lowest tensile strength value was 7.17 Kgf / mm2 with the percentage of Al2O3 addition of 0.5%.

Mechanical Properties of SiC/Gr Reinforced Hybrid Aluminum Composites after Heat Treatment

2021 ◽  
Vol 1042 ◽  
pp. 111-115
Author(s):  
Dwi Rahmalina ◽  
Hendri Sukma ◽  
Abdul Rokhim ◽  
Amin Suhadi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Matrix Composite ◽  
Treatment Process ◽  
Solution Treatment ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composite ◽  
Heat Treatment Process ◽  
Matrix Composites ◽  
The Impact

Metal matrix composite has been developed to improve mechanical properties for the automotive component application. One crucial factor in achieving excellent mechanical properties is improving the properties of the aluminum matrix of composite by the heat treatment process. The mechanical properties of Al-Mg-Si matrix composites alloyed with Zn and reinforced with 5% SiC and 5%Gr particle were examined after the heat treatment process. The aluminum matrix is melted inside the crucible furnace at 850 °C and is added with SiC/Gr particle, followed by stirring at 7500 rpm to optimize the mixing of the composite. Then, the composite is poured into the preheated mold at 300 °C and then squeezed with 30 MPa of pressure. The heat treatment process consists of three steps; solution treatment, quenching, and artificial aging. The aging process is conducted with variation of temperature (140 °C, 180 °C and 200 °C) and holding time (2, 4, and 6 hours). The test results show that the mechanical properties of aluminum matrix composite tend to increase after the heat treatment process. The optimum mechanical properties are achieved at the aging temperature of 200 °C for 6 hours, with the hardness value of 60.3 HRA and the impact value of 0.112 Joule/mm2.

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