scholarly journals Effect of process parameters on the phase transformation kinetics in copper-based alloys and composites

10.30544/571 ◽  
2020 ◽  
Vol 26 (4) ◽  
pp. 365-373
Author(s):  
Marko Simić ◽  
Nenad Radović ◽  
Milan Gordić ◽  
Jovana Ruzic
Keyword(s):  
Phase Transformation ◽  
Review Paper ◽  
Copper Alloys ◽  
Ingot Metallurgy ◽  
Transformation Kinetics ◽  
High Corrosion Resistance ◽  
Phase Transformation Kinetics ◽  
Industrial Gases ◽  
Processing Techniques ◽  
Kinetics Of

Copper-based alloys and composites, owing to their convenient properties, are being considered essential materials in various industries. Since copper possesses an ability to develop high corrosion resistance, putting it in the domain of a desirable material in the manufacturing of valves, pipes, and also systems that carry industrial gases and aqueous fluids. Its usage is also invaluable for cables and electrical wires. This review paper describes diversity in copper alloy processing techniques (powder and ingot metallurgy) which are alongside the phase transformation kinetics interpreted and explained in detail. Furthermore, the focus is put on the copper alloys, as well as the kinetics present in these systems, with the application being highlighted. Correlation between physical properties and phase transformation kinetics in copper alloys is made. It is shown that if certain alloying elements are to be added, different properties could be improved. The effect of phase precipitation on phase transformation kinetics of copper alloys is shown by studying the Cu–15Ni–8Sn alloy.

scholarly journals Phase transformation kinetics of zirconium under ramp wave loading with different windows

2018 ◽  
Vol 67 (7) ◽  
pp. 070204
Author(s):  
Chong Tao ◽  
Wang Gui-Ji ◽  
Tan Fu-Li ◽  
Zhao Jian-Heng ◽  
Tang Zhi-Ping
Keyword(s):  
Phase Transformation ◽  
Wave Loading ◽  
Transformation Kinetics ◽  
Phase Transformation Kinetics ◽  
Kinetics Of

Effect of hot deformation on phase transformation kinetics of 86CrMoV7 steel

2006 ◽  
Vol 57 (4-5) ◽  
pp. 306-313 ◽  
Author(s):  
Furen Xiao ◽  
Bo Liao ◽  
Guiying Qiao ◽  
Shuzhe Guan
Keyword(s):  
Phase Transformation ◽  
Hot Deformation ◽  
Transformation Kinetics ◽  
Phase Transformation Kinetics ◽  
Kinetics Of

scholarly journals Phase Transformation Kinetics of a FCC Al0.25CoCrFeNi High-Entropy Alloy during Isochronal Heating

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1015
Author(s):  
Jun Wang ◽  
Chen Wei ◽  
Haoxue Yang ◽  
Tong Guo ◽  
Tingting Xu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Activation Energy ◽  
Phase Transformation ◽  
High Entropy Alloy ◽  
Transformation Kinetics ◽  
High Entropy ◽  
Phase Transformation Kinetics ◽  
Diffusion Controlled ◽  
Thermal Dilation ◽  
Kinetics Of

The phase transformation kinetics of a face-centered-cubic (FCC) Al0.25CoCrFeNi high-entropy alloy during isochronal heating is investigated by thermal dilation experiment. The phase transformed volume fraction is determined from the thermal expansion curve, and results show that the phase transition is controlled by diffusion controlled nucleation-growth mechanism. The kinetic parameters, activation energy and kinetic exponent are determined based on Kissinger–Akahira–Sunose (KAS) and Johnson–Mehl–Avrami (JMA) method, respectively. The activation energy and kinetic exponent determined are almost constant, indicating a stable and slow speed of phase transition in the FCC Al0.25CoCrFeNi high-entropy alloy. During the main transformation process, the kinetic exponent shows that the phase transition is diffusion controlled process without nucleation during the transformation.

scholarly journals Study on the Phase Transformation Kinetics of Sol-Gel DrivedTiO2Nanoparticles

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
H. Mehranpour ◽  
M. Askari ◽  
M. Sasani Ghamsari ◽  
H. Farzalibeik
Keyword(s):  
Activation Energy ◽  
Phase Transformation ◽  
Sol Gel ◽  
Rutile Phase ◽  
Transformation Kinetics ◽  
X Ray ◽  
Prepared Nanoparticles ◽  
Phase Transformation Kinetics ◽  
Diffusion Controlled ◽  
Kinetics Of

Titanium dioxide nanopowders were synthesized by the diffusion controlled sol-gel process (LaMer model) and characterized by DTA-TG, XRD, and SEM. The preparedTiO2nanoparticles have uniform size and morphology, and the phase transformation kinetics of obtained material was studied by interpretation of the X-ray diffraction patterns peaks on the base of Avrami equation. The stating point of anatase-rutile phase transformation temperature in the prepared nanoparticles was found between 100 and200°C. A decreasing trend on the intensity of X-ray peaks of anatase phase was observed up to600°Cwhen the presence of the rutile phase became predominant. Results indicated that the transition kinetics of the diffusion controlled prepared nanoparticles was begun at low temperature, and it can be concluded that the nucleation and growth sites in these particles were more than other. However, it has been found that the nucleation activation energy of rutile phase was 20 kj/mol, and it is the lowest reported activation energy.

Self-Assembly, Dynamics, and Phase Transformation Kinetics of Donor−Acceptor Substituted Perylene Derivatives

2010 ◽  
Vol 132 (21) ◽  
pp. 7478-7487 ◽  
Author(s):  
Nikos Tasios ◽  
Christos Grigoriadis ◽  
Michael Ryan Hansen ◽  
Henrike Wonneberger ◽  
Chen Li ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Self Assembly ◽  
Transformation Kinetics ◽  
Phase Transformation Kinetics ◽  
Donor Acceptor ◽  
Perylene Derivatives ◽  
Kinetics Of
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