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.

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.

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.

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.

Developments in the aluminum metal matrix composites reinforced by micro/nano particles – A review

2019 ◽  
Vol 54 (6) ◽  
pp. 813-833 ◽  
Author(s):  
Neeraj K Bhoi ◽  
Harpreet Singh ◽  
Saurabh Pratap
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Agricultural Waste ◽  
Aluminum Matrix ◽  
Weight Ratio ◽  
Nano Particles ◽  
Matrix Composites ◽  
Mixing Condition ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composites

‘The micro/nano reinforced particle’ aluminum metal matrix composites (Al-MMCs) are widely used in manufacturing sector due to light-weight, superior strength-to-weight ratio, better fracture toughness, improved fatigue, and tensile property, enhanced corrosion resistance to harsh environment, etc. This article provides an overview of the manufacturing processes and different reinforcing elements used during the synthesis of Al-MMCs. Generally, the reinforced particles like carbides, nitrides, and compounds of oxides are used. Different organic, inorganic, industrial and agricultural waste which can be used for reinforcement in the aluminum matrix is highlighted with their feasible applications. The common mechanical properties (i.e. hardness, tensile and compressive strength, etc.) reported by different researchers are thoroughly discussed with the aim to highlight the amount of reinforcement and improvement occurred during processing. The formation and methodology for mixing condition and sintering behaviour of Al-MMCs are discussed to impart knowledge about the processing circumstances in powder metallurgical route. The affecting conditions during operating and responsible factor for the tribological behaviour are deliberated in a precise manner to recognize the potentiality of reinforcing particles in Al-MMCs. Finally, the different shortcomings and future prospects of the Al-MMCs are given to encourage the future research directions.

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 Material characterization of SiC and Al2O3–reinforced hybrid aluminum metal matrix composites on wear behavior

2019 ◽  
Vol 28 ◽  
pp. 096369351985635 ◽  
Author(s):  
Rajesh AM ◽  
Mohamed Kaleemulla ◽  
Saleemsab Doddamani ◽  
Bharath KN
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Wear Behavior ◽  
Matrix Material ◽  
Aluminum Matrix ◽  
Weight Fraction ◽  
Age Hardening ◽  
Matrix Composites ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composites

In the present investigation, wear test is conducted on a pin-on-disc device at room temperature for both the age hardening and without age hardening conditions. Al7075 has been chosen as the matrix material. Hybrid aluminum metal matrix composites are produced utilizing stir casting route for enhancing the wear behavior and hardness number. The reinforcement used is silicon carbide with 5, 10, and 15 wt% and alumina as the reinforcement in 5, 10, and 15 wt%. In the aluminum matrix, microstructural characterization reveals homogeneous mixing of reinforcements. This investigation shows that the enhanced wear resistance is due to the increment weight fraction of reinforcement. By raising the sliding speeds, there is a reduction in the rate of wear and it reduces with increment in the sliding distance. With increasing weight fraction, there is decrement in the rate of wear of composites. In general, tribological property enhances because of the addition of the two reinforcements.

scholarly journals Wettability in Metal Matrix Composites

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1034
Author(s):  
Massoud Malaki ◽  
Alireza Fadaei Tehrani ◽  
Behzad Niroumand ◽  
Manoj Gupta
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Aluminum Matrix ◽  
Interfacial Strength ◽  
High Strength ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Metal Matrix Nanocomposites ◽  
Aerospace Applications ◽  
Matrix Nanocomposites

Metal matrix composites (MMCs) have been developed in response to the enormous demand for special industrial materials and structures for automotive and aerospace applications, wherein both high-strength and light weight are simultaneously required. The most common, inexpensive route to fabricate MMCs or metal matrix nanocomposites (MMNCs) is based on casting, wherein reinforcements like nanoceramics, -carbides, -nitrides, elements or carbon allotropes are added to molten metal matrices; however, most of the mentioned reinforcements, especially those with nanosized reinforcing particles, have usually poor wettability with serious drawbacks like particle agglomerations and therefore diminished mechanical strength is almost always expected. Many research efforts have been made to enhance the affinity between the mating surfaces. The aim in this paper is to critically review and comprehensively discuss those approaches/routes commonly employed to boost wetting conditions at reinforcement-matrix interfaces. Particular attention is paid to aluminum matrix composites owing to the interest in lightweight materials and the need to enhance the mechanical properties like strength, wear, or creep resistance. It is believed that effective treatment(s) may enormously affect the wetting and interfacial strength.

Production of Al Metal Matrix Composites by the Stir-Casting Method

2013 ◽  
Vol 592-593 ◽  
pp. 614-617 ◽  
Author(s):  
Konstantinos Anthymidis ◽  
Kostas David ◽  
Pavlos Agrianidis ◽  
Afroditi Trakali
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Automobile Industry ◽  
Metal Matrix ◽  
Aluminum Matrix ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Casting Method ◽  
Alloy Matrix

It is well known that the addition of ceramic phases in an alloy e.g. aluminum, in form of fibers or particles influences its mechanical properties. This leads to a new generation of materials, which are called metal matrix composites (MMCs). They have found a lot of application during the last twenty-five years due to their low density, high strength and toughness, good fatigue and wear resistance. Aluminum matrix composites reinforced by ceramic particles are well known for their good thermophysical and mechanical properties. As a result, during the last years, there has been a considerable interest in using aluminum metal matrix composites in the automobile industry. Automobile industry use aluminum alloy matrix composites reinforced with SiC or Al2O3 particles for the production of pistons, brake rotors, calipers and liners. However, no reference could be cited in the international literature concerning aluminum reinforced with TiB particles and Fe and Cr, although these composites are very promising for improving the mechanical properties of this metal without significantly alter its corrosion behavior. Several processing techniques have been developed for the production of reinforced aluminum alloys. This paper is concerned with the study of TiB, Fe and Cr reinforced aluminum produced by the stir-casting method.

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