Recent times, metal matrix composites (MMC) are considered as candidate materials for numerous applications such as aerospace, automotive and military industries due to improved properties over the conventional metals and alloys. Out of the different categories of metal matrix composites, discontinuous particulate reinforced composites are preferred for industrial applications due to low manufacturing cost. High fracture toughness, improved ductility and machinability characteristics support the selection of metal matrix nanocomposites (MMnC) over conventional composites for different applications. The majority of nanocomposites are produced through liquid state processing due to faster processing time and economy. However, the conventional liquid processing method leads to poor wetting of reinforced nanoparticles by molten metal that degrades the quality of the fabricated nanocomposite. This paper reviews some of the advanced liquid state processing techniques adopted for the improved wettable characteristics of nanoparticles and their uniform distribution in the metal matrix. © 2018 Sociedade Portuguesa de Materiais (SPM)

Kannan C

Department of Automotive Engineering

School of Mechanical Engineering

Vellore Campus

Ramanujam R

Department of Manufacturing Engineering

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Science and Technology of Materials

The micro- and nano-composites containing 2, 4 and 6 by wt% of B4C particles in aluminium are fabricated using stir and ultrasonic cavitation-assisted casting processes. The fabricated composites are characterized by using scanning electron microscopy, X-ray diffractometer. The dry sliding wear behaviour of the prepared composites are investigated by using pin on disc method at an applied load of 4, 8, 12, 16 N for pin temperatures of 100 and 200 °C. The wear study at room temperature is also carried out for comparison. The investigations indicate that the wear resistance of the nano particle-reinforced composites are better than those of the micro B4C particle-reinforced composites under all loads and different temperatures. Analysis of wear surface and debris by scanning electron microscopy with energy dispersive X-ray diffractometer reveals the nature of wear mode of samples. It is also observed that the predominant wear mechanism for pure aluminium at 100 and 200 °C are adhesion and metal flow respectively, whereas for fabricated composites abrasion, delamination and oxidation are the most dominant wear mechanisms. © 2016, The Indian Institute of Metals - IIM.

Transactions of the Indian Institute of Metals

High Temperature Wear Behaviour of Nano/Micro B4C Reinforced Aluminium Matrix Composites Fabricated by an Ultrasonic Cavitation-Assisted Solidification Process

Advanced Science Letters

Optimization of Stir Casting Parameters for Manufacturing Aluminium Based Nanocomposites Through Numerical Investigation

Journal of Alloys and Compounds

Effectiveness evaluation of molten salt processing and ultrasonic cavitation techniques during the production of aluminium based hybrid nanocomposites - An experimental investigation

Microstructural evolution in ultrafine grained Al-Graphite composite synthesized via combined use of ultrasonic treatment and friction stir processing

Tailoring microstructure and properties of bilayer-graded Al/B4C/MgAl2O4 composites by single-stage pressureless infiltration

Advanced liquid state processing techniques for ex-situ discontinuous particle reinforced nanocomposites: A review

Journal	Data powered by TypesetScience and Technology of Materials
Publisher	Data powered by TypesetElsevier BV
ISSN	2603-6363
Open Access	No