Tensile Behaviour of Nano-Particulate Reinforced Aluminium Matrix Composites at Elevated Temperatures

2007 ◽  
Vol 561-565 ◽  
pp. 761-764 ◽  
Author(s):  
A. Ahmed ◽  
A.J. Neely ◽  
K.K. Shankar ◽  
Sammy Lap Ip Chan
Keyword(s):  
Room Temperature ◽  
Elevated Temperatures ◽  
Aluminium Matrix ◽  
Tensile Behaviour ◽  
Matrix Composites ◽  
Aluminium Matrix Composites ◽  
Al Composite ◽  
Maximum Stiffness ◽  
Al 7075 ◽  
Particulate Reinforced

The tensile behaviour of nanometric SiC particulate (SiCp) reinforced aluminium matrix composites (AMCs) was examined at room temperature, 215°C and 350°C. These AMCs were produced via powder metallurgy (P/M) using Al 7075 powder reinforced with different volume fractions (1 vol.%, 3 vol.% and 5 vol.%) of nano-SiCp. The experimental results exhibit that at room temperature un-reinforced Al has both maximum strength and ductility whereas the 5 vol.% SiCp/Al composite has only maximum stiffness. Similar trends were obtained for tests performed at 215°C. However at 350°C, the 1 vol.% SiCp/Al composite has the highest stiffness. Optical microscopy and scanning electron microscopy were performed for microstructure study, examination of the SiCp distribution in the Al matrix and fractography.

scholarly journals Al Matrix Composites Reinforced by Ti and C Dedicated to Work at Elevated Temperature

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3114
Author(s):  
Bartosz Hekner ◽  
Jerzy Myalski ◽  
Patryk Wrześniowski ◽  
Tomasz Maciąg
Keyword(s):  
Working Conditions ◽  
Elevated Temperatures ◽  
Aluminium Matrix ◽  
Carbon Surface ◽  
Matrix Composites ◽  
Time Intervals ◽  
Aluminium Matrix Composites ◽  
Al Matrix Composites ◽  
Microstructure Of The Material ◽  
Al Matrix

In this paper, the applicability of aluminium matrix composites to high-temperature working conditions (not exceeding the Al melting point) was evaluated. The behaviour of Al-Ti-C composites at elevated temperatures was described based on microstructural and phase composition observations for composites heated at temperatures of 540 and 600 °C over differing time intervals from 2 to 72 h. The materials investigated were aluminium matrix composites (AMC) reinforced with a spatial carbon (C) structure covered by a titanium (Ti) layer. This layer protected the carbon surface against contact with the aluminium during processing, protection which was maintained for the material’s lifetime and ensured the required phase compositions of Al4C3 phase limitation and AlTi3 phase creation. It was also proved that heat treatment influenced not only phase compositions but also the microstructure of the material, and, as a consequence, the properties of the composite.

Investigation of the properties of Al7075-HTC composites produced by powder metallurgy

2021 ◽  
pp. 002199832199087
Author(s):  
Ozan Arsun ◽  
Yasin Akgul ◽  
Hamza Simsir
Keyword(s):  
Powder Metallurgy ◽  
Corrosion Test ◽  
Aluminium Matrix ◽  
Matrix Composites ◽  
Test Results ◽  
Corrosion Properties ◽  
Aluminium Matrix Composites ◽  
Al 7075 ◽  
7075 Alloy ◽  
First Time

Even though aluminium matrix composites have been used in many different application areas, the improvement of its mechanical, tribological, and corrosion properties is crucial for enlargement of its application areas. To achieve this, many ceramic-based and carbon-based additives have been used. However, eco-friendly and low production cost hydrothermal carbons (HTCs) have not been used, yet. In this study, three different amounts of HTCs (0.25, 0.50, and 1.00 wt.%) produced from cellulose were used as a reinforcement material in Al 7075 by powder metallurgy for the first time. According to the mechanical, tribological, and corrosion test results, all of the mentioned properties of Al 7075 alloy were improved by reinforcing with HTCs. As a consequence of this study, HTCs can be used as appropriate reinforcement materials for the aluminium matrix composites.

Research Progress on Plastic Processing Techniques of Particulate Reinforced Aluminium Matrix Composites

2017 ◽  
Vol 898 ◽  
pp. 971-983 ◽  
Author(s):  
Hai Bao Wu ◽  
De Fu Li ◽  
Xing Gang Li ◽  
Guo Qiang Chai
Keyword(s):  
Material Properties ◽  
Spray Deposition ◽  
Stir Casting ◽  
Research Progress ◽  
Aluminium Matrix ◽  
Matrix Composites ◽  
Aluminium Matrix Composites ◽  
Low Thermal Expansion ◽  
Plastic Processing ◽  
Particulate Reinforced

Particulate Reinforced Aluminium Matrix Composites (PRAMCs) have been widely applied in military and civilian areas such as aviation, aerospace, advanced weapon applications and electrical industries due to their good mechanical properties at elevated temperature, low thermal expansion coefficient, excellent wear resistance and low production cost. The main preparation techniques of the PRAMCs include stir casting, powder metallurgy, pressureless infiltration and spray deposition. However, the problems such as low densification and particle cluster encountered in these techniques often reduce the material properties. It has reported that the homogeneity of the distribution of particulate reinforcements in metal matrix can be improved by plastic processing, thus enhancing the material densification. This paper summarized recent progress in the plastic processing methods of the PRAMCs, with an emphasis on the spinning technique. The effects of various process parameters on the material properties were discussed in detail. A summary of research progress on the numerical simulation of plastic processing of the PRAMCs was presented. In the end, an outlook was given on the prospect of the PRAMCs’ development.

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