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.

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 Tribological Behaviour of MoS2 and Graphite Reinforced Aluminium Matrix Composites

2021 ◽  
Vol 1059 (1) ◽  
pp. 012021
Author(s):  
A. Saravanakumar ◽  
D. Ravikanth ◽  
L. Rajeshkumar ◽  
D. Balaji ◽  
M. Ramesh
Keyword(s):  
Aluminium Matrix ◽  
Matrix Composites ◽  
Tribological Behaviour ◽  
Aluminium Matrix Composites

scholarly journals Enhancement on the Tribological Properties of the Multilayer RGO/Al Matrix Composites by Cu-Coating Method

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3163
Author(s):  
Fengguo Liu ◽  
Ning Su ◽  
Renguo Guan
Keyword(s):  
Electron Microscope ◽  
Tribological Properties ◽  
Milled Powder ◽  
Wear Loss ◽  
Matrix Composites ◽  
Tem Analysis ◽  
Lubricating Film ◽  
Coating Method ◽  
Al Matrix Composites ◽  
Al Matrix

Multilayer reduced graphene oxide (mrGO) was chemically modified by electroless plating of copper on surface to form mrGO-Cu. The scanning electron microscope (SEM) and transmission electron microscope (TEM) analysis revealed that nano-Cu particles were uniformly dispersed on the surface of mrGO. The mrGO-Cu powders were further utilized as reinforcements for aluminum (Al) matrix and the mrGO-Cu/Al composite was successfully fabricated through clad rolling of milled powder. The tribological properties of the mrGO-Cu/Al composites were explored. The tribological results show that the mrGO-Cu could reduce the friction coefficient and wear loss of mrGO-Cu/Al composites, since the mrGO-Cu participated in lubricating processes due to the formation of a transfer layer on the contact surface. Furthermore, it is found that the composition of mrGO-Cu could significantly influence the tribological properties of the mrGO-Cu/Al composites. The composites with 4% of mrGO-Cu for composites exhibited the best tribological behavior, which transformed from adhesive wear to abrasive wear, due to the formation of a graphite lubricating film.

Effects of β-Si3N4 whiskers addition on mechanical properties and tribological behaviors of Al matrix composites

Wear ◽  
2019 ◽  
Vol 430-431 ◽  
pp. 145-156 ◽  
Author(s):  
Chenxu Zhang ◽  
Dongxu Yao ◽  
Jinwei Yin ◽  
Kaihui Zuo ◽  
Yongfeng Xia ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Matrix Composites ◽  
Tribological Behaviors ◽  
Al Matrix Composites ◽  
Al Matrix
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