scholarly journals Progress of Flake Powder Metallurgy Research

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 931
Author(s):  
Behzad Sadeghi ◽  
Pasquale Cavaliere
Keyword(s):  
Powder Metallurgy ◽  
Ball Milling ◽  
Basic Unit ◽  
Processing Route ◽  
Metal Powders ◽  
Spherical Powder ◽  
Flake Powder Metallurgy ◽  
Energy Ball ◽  
Increased Strength ◽  
Reinforcement Distribution

This paper reviewed several recent progresses of the new powder metallurgy technology known as flake powder metallurgy (FPM) including different processing routes, conventional FPM (C-FPM), slurry blending (SB), shift-speed ball milling (SSBM), and high-shear pre-dispersion and SSBM (HSPD/SSBM). The name of FPM was derived from the use of flake metal powders obtained by low-speed ball milling (LSBM) from spherical powder. In this case, the uniformity of reinforcement distribution leads to increased strength and ductility. Powder is the basic unit in PM, especially advanced PM, and its control is key to various new PM technologies. The FPM is a typical method for finely controlling the powder shape through low-energy ball milling (LEBM) to realize the preparation of advanced material structures. The present paper represents a review of the main results of research on FPM and indicates the potential for future studies devoted to the optimization of this processing route.

scholarly journals Powder Metallurgy Processing and Mechanical Properties of Controlled Ti-24Nb-4Zr-8Sn Heterogeneous Microstructures

Metals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1626
Author(s):  
Benoît Fer ◽  
David Tingaud ◽  
Azziz Hocini ◽  
Yulin Hao ◽  
Eric Leroy ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Ball Milling ◽  
Processing Route ◽  
Fine Grain ◽  
Plasma Sintering ◽  
3D Network ◽  
Spark Plasma ◽  
Powder Particles ◽  
Heterogeneous Microstructures

This paper gives some insights into the fabrication process of a heterogeneous structured β-metastable type Ti-24Nb-4Zr-8Sn alloy, and the associated mechanical properties optimization of this biocompatible and low elastic modulus material. The powder metallurgy processing route includes both low energy mechanical ball milling (BM) of spherical and pre-alloyed powder particles and their densification by Spark Plasma Sintering (SPS). It results in a heterogeneous microstructure which is composed of a homogeneous 3D network of β coarse grain regions called “core” and α/β dual phase ultra-fine grain regions called “shell.” However, it is possible to significantly modify the microstructural features of the alloy—including α phase and shell volume fractions—by playing with the main fabrication parameters. A focus on the role of the ball milling time is first presented and discussed. Then, the mechanical behavior via shear tests performed on selected microstructures is described and discussed in relation to the microstructure and the probable underlying deformation mechanism(s).

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.

scholarly journals The effect of ball milling on crystallite size

2020 ◽  
Vol 3 (1) ◽  
pp. 543-549
Author(s):  
Oguzhan Sahin ◽  
Veysel Erturun
Keyword(s):  
Crystallite Size ◽  
Ball Milling ◽  
High Energy ◽  
Metal Powders ◽  
X Ray Diffraction ◽  
Ceramic Powders ◽  
Sem Images ◽  
X Ray ◽  
Sic Ceramic ◽  
Energy Ball

Homogeneous mixing of Al, varying amounts of Cu, Mg and Zn metal powders and SiC ceramic powders and mechanical alloys of metal powders by using high energy ball milling were carried out in the Retsch MM400 model mixer device, which performs movement in a spex manner. After this process, X-ray diffraction (XRD) was applied to the powdered mixtures. With the data obtained from XRD graphics; The crystallite size was calculated using the Scherrer equation, and the lattice stresses were calculated using the Williamson-Hall equation and comparisons between these two data were made. It was observed that the amount of Cu by weight, both the crystallite size, did not make a notable change for this property. Then, powder mixtures were sintered in hot isostatic press in argon atmosphere, which is a shielding gas, and turned into samples. These samples were polished and scanning electron microscopy (SEM) images were taken.

scholarly journals Study of the AISI 52100 Steel Reuse Through the Powder Metallurgy Route Using High Energy Ball Milling

2017 ◽  
Vol 21 (1) ◽  
Author(s):  
Bruna Horta Bastos Kuffner ◽  
Gilbert Silva ◽  
Carlos Alberto Rodrigues ◽  
Geovani Rodrigues
Keyword(s):  
Powder Metallurgy ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Aisi 52100 ◽  
Aisi 52100 Steel ◽  
Energy Ball ◽  
Powder Metallurgy Route

Interface Reaction of CNTs/Al Composites Fabricated by High Energy Ball Milling

2013 ◽  
Vol 750-752 ◽  
pp. 90-94 ◽  
Author(s):  
Gang Yue ◽  
Xiao Lan Cai ◽  
Kai Jun Wang ◽  
Hong Peng Sun ◽  
Ya Guang Chen
Keyword(s):  
Powder Metallurgy ◽  
Ball Milling ◽  
Interface Reaction ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Appreciable Amount ◽  
Preparation Process ◽  
Composite Powders ◽  
Thermodynamics And Kinetics ◽  
Energy Ball

CNTs/Al composites were fabricated by high energy ball milling. The phase structure and consti- tuent of the preparation process were analyzed. The interface reaction and the formation process of the interface reaction product Al4C3were discussed by thermodynamics and kinetics. The result shows that no Al4C3can be found in Al-CNTs composite powders fabricated by high energy ball milling. Al4C3exists in the inter- face after pressureless sintering. And no appreciable amount of Al4C3was observed in CNTs/Al composites directly by powder metallurgy. It shows that high energy ball milling can benifit the interface reaction. And the purified CNTs, never milled, is stable in the preparation process of CNTs/Al composites by powder metallurgy.

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