Effects of B2O3 Flux on the Synthesis and Microstructure of Aluminum Metal Matrix Composites

2012 ◽  
Vol 217-219 ◽  
pp. 31-34
Author(s):  
Hong Ming Wang ◽  
Gui Rong Li ◽  
Xue Ting Yuan ◽  
Xun Yin Zhang ◽  
Yu Tao Zhao ◽  
...  
Keyword(s):  
Volume Fraction ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Melting Points ◽  
Flux Method ◽  
Aluminum Metal ◽  
Actual Volume ◽  
Aluminum Metal Matrix Composites

new flux method is explored to decrease the reactive temperature of in situ chemical reaction to fabricate particles reinforced aluminum matrix composites. When B2O3 flux is added into the mixed reactive salts the melting points of them decrease with the increase of adding amount of B2O3 in the range of 1-5wt.%. When w(B2O3)=5% the melting point of K2TiF6-B2O3 salt is 450°C,which is decreased by 90°C compared with that of pure K2TiF6. Meanwhile the in situ reactive time is shortened and the actual volume fraction is increased.

scholarly journals A consequence of reinforcements in aluminum-based metal matrix composites: a literature review

10.30544/422 ◽  
2019 ◽  
Vol 25 (3) ◽  
pp. 195-208
Author(s):  
Nishith R Rathod ◽  
Jyoti Menghani
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Research Work ◽  
Aluminum Matrix ◽  
Ex Situ ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composites

In the recent era, Metal Matrix Composites (MMCs) are one of the most vigorously studied topics in material science. Lightweight metals and its alloys create an intense attraction for tailoring new metal matrix composites to overcome conventional limitations like low strength. Aluminum metal matrix composites signify to the high-grade lightweight high-performance aluminum-based MMCs. The reinforcements in aluminum matrix composites could be in the form of particulates, whiskers, and continuous fiber or discontinuous fiber, where weight or volume fraction varies from a few percentages to 60%. Properties of aluminum metal matrix composites can be customized as per the demand of the industry by getting the appropriate combination of the metal matrix, reinforcements, and selective processing route. Nowadays many grads of aluminum matrix composites are fabricated by different routes where in situ route processing is more attractive compared with conventional ex-situ process because it delivers excellent wettability, thermally stability of reinforcements, the bonding strength between reinforcements and matrix, cohesive atomic structure, and fine grain size of reinforcements (specifically nano size). The devoted research work of aluminum matrix composites during the last three-decade generates a wealth of knowledge on the effect of reinforcements vis-à-vis mechanical, chemical, tribological properties of aluminum matrix composites. The acceptance of the aluminum matrix composites as engineering materials depends not only on the performance advantages of the composites, but it also depends upon the cheap, easy, and familiar fabrication technologies for these tailored materials.

Welding of Aluminum Matrix Composites

2013 ◽  
Vol 762 ◽  
pp. 476-482
Author(s):  
Ji Tai Niu ◽  
Zeng Gao ◽  
Dong Feng Cheng ◽  
Xi Tao Wang ◽  
Si Jie Chen
Keyword(s):  
Metal Matrix ◽  
Research Team ◽  
Aluminum Matrix ◽  
Diffusion Welding ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Vacuum Brazing ◽  
The Poor ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composites

Aluminum metal matrix composites (Al-MMCs) are new promising materials for aviation, aerospace and automotive industries. However, due to the poor weldability they have very limited applications. In this paper, the authors present the welding achievements of Al-MMCs developed by their scientific research team in recent years. Laser welding, liquid phase impact diffusion welding and vacuum brazing were utilized. Based on analysis of microstructure, good joints can be achieved by using these welding methods.

Research review of diversified reinforcement on aluminum metal matrix composites: fabrication processes and mechanical characterization

2018 ◽  
Vol 25 (4) ◽  
pp. 633-647 ◽  
Author(s):  
Jitendra M. Mistry ◽  
Piyush P. Gohil
Keyword(s):  
Mechanical Characteristics ◽  
Mechanical Characterization ◽  
Aluminum Matrix ◽  
Research Review ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Aluminum Metal ◽  
Future Work ◽  
Aluminum Metal Matrix Composites

AbstractThis paper presents a research review on fabrication processes and mechanical characterization of aluminum matrix composites (AMCs), which have found application in structural, electrical, thermal, tribological, and environmental fields. A comprehensive literature review is carried out on various types of fabrication processes, the effects of individual reinforcement and multiple reinforcements, its percentage, size, temperature, processing time, wettability, and heat treatment on the mechanical characterization of AMCs including different product applications. Various models and techniques proposed to express the mechanical characteristics of AMCs are stated here. The concluding remarks addresses the future work needed on AMCs.

Mechanical Properties of Aluminum Metal Matrix Composites

2009 ◽  
Vol 417-418 ◽  
pp. 341-344 ◽  
Author(s):  
P. Agrianidis ◽  
T. Agrianidis ◽  
K.G. Anthymidis ◽  
A. Trakali
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Automobile Industry ◽  
Metal Matrix ◽  
Aluminum Matrix ◽  
Operating Conditions ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composites

Aluminum matrix composites reinforced by ceramic particles are well know for their good thermo-physical and mechanical properties. As a result, during the last years, there has been a considerable interest in using aluminum metal matrix composites (MMCs) in the automobile industry. These potential applications have greatly stimulated the tribological studies of MMCs under different operating conditions. In this paper, TiB – particles - reinforced aluminum - tungsten matrix composites were fabricated by the cost – effective squeeze – casting technology and their microstructure characteristics and mechanical properties were investigated. The microstructure observation showed that the produced composites were dense, with no micro-holes and obvious defects. Their wear resistance was evaluated using a pin on disc type equipment under dry wear conditions and found significantly increased compared to pure Al metal.

Effect of Titanium Carbide Particles on Mechanical Properties of Aluminum Matrix Composites

2017 ◽  
Vol 5 (2) ◽  
pp. 20-30
Author(s):  
Zaman Khalil Ibrahim
Keyword(s):  
Mechanical Properties ◽  
Titanium Carbide ◽  
Compression Strength ◽  
Volume Fraction ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Powder Metallurgy Technique ◽  
Carbide Particles ◽  
Properties Of Composites

In this research aluminum matrix composites (AMCs) was reinforced by titanium carbide (TiC) particles and was produced. Powder metallurgy technique (PM) has been used to fabricate AMCs reinforced with various amounts (0%, 4%, 8%, 12%, 16% and 20% volume fraction) of TiC particles to study the effect of different volume fractions on mechanical properties of the Al-TiC composites. Measurements of compression strength and hardness showed that mechanical properties of composites increased with an increase in volume fraction of TiC Particles. Al-20 % vol. TiC composites exhibited the best properties with hardness value (97HRB) and compression strength value (275Mpa).

Study on Mechanical Properties of AA6351 Alloy Reinforced with Titanium Di-Boride (TiB2) Composite by In Situ Casting Method

2015 ◽  
Vol 787 ◽  
pp. 583-587 ◽  
Author(s):  
V. Mohanavel ◽  
K. Rajan ◽  
K.R. Senthil Kumar
Keyword(s):  
Tensile Strength ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Scanning Electron Micrographs ◽  
Matrix Composites ◽  
X Ray Diffraction ◽  
In Situ Reaction ◽  
Halide Salts ◽  
Scanning Electron

In the present study, an aluminum alloy AA6351 was reinforced with different percentages (1, 3 and 5 wt %) of TiB2 particles and they were successfully fabricated by in situ reaction of halide salts, potassium hexafluoro-titanate and potassium tetrafluoro-borate, with aluminium melt. Tensile strength, yield strength and hardness of the composite were investigated. In situ reaction between the inorganic salts K2TiF6 and KBF4 to molten aluminum leads to the formation of TiB2 particles. The prepared aluminum matrix composites were characterized using X-ray diffraction and scanning electron microscope. Scanning electron micrographs revealed a uniform dispersal of TiB2 particles in the aluminum matrix. The results obtained indicate that the hardness and tensile strength were increased with an increase in weight percentages of TiB2 contents.

Sign in / Sign up

Export Citation Format

Share Document