Improvement on ball-milling composite process of metal matrix micro-nanometer powder using nanosuspension as the precursor

2014 ◽  
Author(s):  
Hongyu Wang ◽  
Jianzhong Zhou ◽  
Xiangfeng Li ◽  
Qing Shen ◽  
Man Cheng
Keyword(s):  
Ball Milling ◽  
Metal Matrix ◽  
Nanometer Powder

Nickel/Alumina Metal Matrix Nanocomposites Obtained by High-Energy Ball Milling and Spark Plasma Sintering

2018 ◽  
Author(s):  
Enrique Martínez-Franco ◽  
Ming Li ◽  
Ricardo Cuenca Álvarez ◽  
Jesús González Hernández ◽  
Chao Ma ◽  
...  
Keyword(s):  
Ball Milling ◽  
Spark Plasma Sintering ◽  
Metal Matrix ◽  
High Energy ◽  
Alumina Nanoparticles ◽  
Metal Matrix Nanocomposites ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Energy Ball ◽  
Matrix Nanocomposites

Metal matrix nanocomposites (MMNCs) are anticipated to offer significantly better performance than existing superalloys. Nickel/alumina nanocomposite samples were fabricated with a powder metallurgy method, combining high-energy ball milling (HEBM) and spark plasma sintering (SPS). The objective of this research is to determine the effect of alumina nanoparticle fraction and HEBM parameters on the powder preparation and sintering processes, and resultant microstructure and properties. Nickel-based powders containing various fractions (1, 5 and 15 vol.%) alumina nanoparticles were prepared by HEBM. The initial particle sizes were 44 μm and 50 nm for nickel and alumina, respectively. The milling process was conducted by starting with mixing at 250 rpm for 5 min, followed by cycling operation at high and low speeds (1200 rpm for 4 min and 150 rpm for 1 min). Samples at different milling times (30, 60, 90 and 120 min) of each composition were obtained. Scanning electron microscopy (SEM) was used to evaluate the dispersion of nanoparticles in the powders at different milling times. SPS technique was used for consolidation of the prepared powders. SEM images showed that alumina nanoparticles are homogeneously dispersed in the metal matrix in the sample containing 15 vol.% alumina. Hardness measurements in cross sections of SPSed samples showed higher values for Ni/Al2O3 MMNC compared to pure Ni.

Effect of friction stir process parameters on tensile strength of eggshell and SiC-reinforced aluminium-based composite

2020 ◽  
Vol 18 (1) ◽  
pp. 157-166
Author(s):  
Anas Islam ◽  
Shashi Prakash Dwivedi ◽  
Vijay Kumar Dwivedi
Keyword(s):  
Tensile Strength ◽  
Ball Milling ◽  
Rotational Speed ◽  
Metal Matrix ◽  
Capital Investment ◽  
Content Type ◽  
Friction Stir Process ◽  
Friction Stir ◽  
Single Entity ◽  
Strong Control

Purpose This study aims to minimize pollution and enhance the mechanical properties of SiC- reinforced aluminum- based composite by utilizing waste eggshell. Pollution is increasing at an exponential rate across the globe. Every nation is struggling to have strong control over the rise in pollution. Many countries are even successful in this regard, but only up to a certain extent; also, a lot of capital investment is required just to make arrangements for making and taking care of dedicated dump yards. An alternative approach in this regard could be using the unwanted wastes in some constructive works by recycling them. Novel strategies and dedicated cells for the research and development regarding the recycling of various kinds of wastes are continuously being developed by various nations. Design/methodology/approach This study attempts to make a hybrid composite of AA6101 alloy through the friction stir process (FSP) technique in which waste eggshells and SiC have been used as reinforcement particles. As the densities of eggshells, SiC show different values of densities to make them a single entity, they were subjected to ball milling for around 75 h. After ball milling, the reinforcement particles (eggshells and SiC) were distributed uniformly in the metal matrix (Al), and they appear as a single entity in the metal matrix composite. Findings The main objective of this study is to obtain an enhanced value of tensile strength of the final composite. Concerning this, the parameters of FSP, i.e. rotational speed and transverse speed, have been optimized through the Box–Behnken design approach. The optimized values of FSP parameters came out to be as 935.92 rpm of rotational speed and 22.48 mm/min as transverse speed value. Originality/value The results showed that the tensile strength and hardness of the composite developed at an optimum combination of FSP parameters enhanced by about 47.14 and 45.45%, respectively.

Aluminium Metal Matrix Composite – An Insight into Solid State and Liquid State Processes

2015 ◽  
Vol 766-767 ◽  
pp. 234-239 ◽  
Author(s):  
K.R. Padmavathi ◽  
R. Ramakrishnan ◽  
K. Palanikumar
Keyword(s):  
Solid State ◽  
Ball Milling ◽  
Liquid State ◽  
Metal Matrix ◽  
Coefficient Of Thermal Expansion ◽  
Stir Casting ◽  
Processing Methods ◽  
Uniform Dispersion ◽  
Aluminium Metal ◽  
State Processing

Aluminium metal matrix composites (AMMCs) are being considered as a group of superior material for its lightness, strength, high specific modulus, low coefficient of thermal expansion and good wear resistance properties. Solid state and liquid state processing methods are used to fabricate AMMCs. Achieving a uniform distribution of reinforcement within the matrix is one such challenge, which affects directly on the properties and quality of composite material. Powder metallurgy route, one of the solid state processing methods can be effectively used to get uniform dispersion of reinforcements with aluminium metal matrix. This paper presents the summary of the ball milling and stir casting processes to fabricate the AMMCs and its applications. Major issues like ball milling time, dispersion of reinforcements, grain size, the stirring time and speed are discussed. Also the effect of different reinforcement for AMMCs on the mechanical properties is discussed in detail.

Effect of Mixing Method on Microstructure of SiCp/Al Composites

2013 ◽  
Vol 749 ◽  
pp. 157-160
Author(s):  
Hui Qin Cao ◽  
Zhi Meng Guo ◽  
Wei Wei Yang ◽  
Ji Luo
Keyword(s):  
Ball Milling ◽  
Metal Matrix ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Homogeneous Distribution ◽  
Sic Particles ◽  
Homogenous Distribution ◽  
Mixing Method ◽  
Energy Ball ◽  
Basic Prerequisite

The fine and homogenous distribution of the SiC particles in Al metal matrix is basic prerequisite for improving the properties of the SiCp/Al composites. In this paper, the effects of high energy ball milling and ordinary ball milling on the spatial distribution of reinforcement of the SiCp/Al composites have been investigated. The result showed that high energy ball milling is the most effective method to get homogeneous distribution of SiC particles in Al matrix. There were many clusters of SiC particles in the composites fabricated by ordinary ball milling.

scholarly journals Innovative processing routes in manufacturing of metal matrix composite materials

10.30544/629 ◽  
2021 ◽  
Vol 27 (1) ◽  
pp. 1-13
Author(s):  
Jovana Ruzic ◽  
Marko Simić ◽  
Nikolay Stoimenov ◽  
Dušan Božić ◽  
Jelena Stašić
Keyword(s):  
Ball Milling ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Cost Effective ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Processing Route ◽  
Ingot Metallurgy ◽  
Energy Ball ◽  
Manufacturing Techniques

Metal matrix composites (MMCs) belong to a group of modern materials owing to their excellent technological, mechanical, and physical properties such as excellent wear and corrosion resistance, high electrical and thermal conductivity, improved strength and hardness. Final properties of MMCs are affected equally by all steps of its manufacturing process. It is shown that by using adequate process parameters to obtain starting materials (reaching the specific size, shape, and reactivity) the control of volume fraction and distribution of reinforcements within the matrix can be achieved. For this purpose, mechanical alloying has been appointed as a good approach. MMCs can be produced using powder metallurgy, ingot metallurgy, and additive manufacturing techniques. Combining high-energy ball milling with these techniques enables the design of an innovative processing route for MMCs manufacturing. Mechanochemical process (achieved using high-energy ball milling) was employed in three manufacturing procedures: hot pressing, compocasting, and laser melting/sintering for obtaining of the suitable powder. These production routes for MMCs manufacturing were the subject of this work. The aim of MMCs design is to establish an optimal combination of production techniques merged into the cost-effective fabrication route for obtaining MMCs with required properties.

Fabrication of Carbon Nanotube/Aluminum Matrix Composites by Ball Milling and Cold Press Processing

2021 ◽  
Vol 878 ◽  
pp. 89-97
Author(s):  
Shogo Kimura ◽  
Junki Ueda ◽  
Hideaki Tsukamoto
Keyword(s):  
Carbon Nanotube ◽  
Ball Milling ◽  
Metal Matrix ◽  
Milling Time ◽  
Aluminum Matrix ◽  
High Strength ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Ball Milling Time ◽  
Al Matrix

Carbon nanotube (CNT) has been one of promising candidates as a reinforcement in metal matrix composites (MMCs) for its variety of excellent properties such as lightweight, high strength etc. It is necessary to disperse CNT to the level of each one in order to lead to efficiently reflect the excellent essential physical properties of CNT in the composites. This research investigates fabrication processes linked with dry ball milling and cold pressing followed by sintering to uniformly disperse CNT in aluminum (Al) matrix. It was found that dispersibility of CNT were improved with increasing ball milling time based on observation of morphology of mixed powders and the composites using SEM. Vickers hardness and tensile strength of CNT/ Al composites increased with increasing ball milling time up to 24 hours, while they were constant or decreased because of increase of voids in case of longer than 24 hours of ball milling time.

Al/Al2O3 Nanocomposite Produced by ECAP

2013 ◽  
Vol 762 ◽  
pp. 457-464 ◽  
Author(s):  
Riccardo Casati ◽  
Matteo Amadio ◽  
Carlo Alberto Biffi ◽  
David Dellasega ◽  
Ausonio Tuissi ◽  
...  
Keyword(s):  
Ball Milling ◽  
Metal Matrix ◽  
Numerical Models ◽  
High Energy ◽  
Sem Analysis ◽  
High Energy Ball Milling ◽  
Composite Powders ◽  
Metal Matrix Nanocomposites ◽  
Angular Pressing ◽  
Energy Ball

Metal matrix nanocomposites have been produced by powder metallurgy route. Al and nanoAl2O3powders were grinded through high energy ball milling. Then, the composite powders were sintered by Equal Channel Angular Pressing (ECAP). 12 ECAP passes were carried out in order to improve the dispersion of the hard particles. SEM analysis was performed to investigate the distribution of the ceramic nanoparticles within the matrix. Hardness tests were executed to evaluate the mechanical behavior of the nanocomposites. Finally, mechanical strength values obtained by numerical models were compared with those estimated from hardness measurements. High energy ball milling followed by ECAP process revealed to be a suitable route for the production of metal matrix composites reinforced with well dispersed nanoparticles.

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