Effects of Homogenization Treatment on Dispersoid Characteristics and Recrystallization Behavior in an Al-Zn-Mg-Cu-Zr Alloy

In the present research, a comprehensive study on the effect of the homogenization treatment on the characteristics of dispersoid and recrystallization behavior in an Al-Zn-Mg-Cu-Zr alloy has been conducted by means of optical micrography, scanning electron micrography and transmission electron micrography. The influence of three process parameters of the homogenization treatment, first stage holding temperature, holding time and heating rate, on the dispersoid characteristics has been throughly studied. The result shows that holding at 400°C for sufficient time is highly beneficial for obtaining fine and uniformly distributed Al3Zr particles. Compared with the high heating rate treatment, the slow one apparently leads to significantly smaller Al3Zr dispersoids, the dimension of the dispersoids decreases from 35 nm to 22 nm, and the number density of Al3Zr particle in the center of the grains increases from 13/μm2 to 35/μm2. The percentage of recrystallized grains of the alloy is found to be affected by dispersoid distribution.

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Effect of Homogenization Treatment Regime on Microstructure, Recrystallization Behavior, Mechanical Properties, and Superplasticity of Al-Cu-Er-Zr Alloy

JOM ◽

10.1007/s11837-021-04766-z ◽

2021 ◽

Author(s):

S. M. Amer ◽

A. V. Mikhaylovskaya ◽

R. Yu. Barkov ◽

A. D. Kotov ◽

A. G. Mochugovskiy ◽

...

Keyword(s):

Mechanical Properties ◽

Treatment Regime ◽

Recrystallization Behavior ◽

Homogenization Treatment ◽

Zr Alloy

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Effects of homogenization treatment on recrystallization behavior and dispersoid distribution in an Al–Zn–Mg–Sc–Zr alloy

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2007.02.054 ◽

2008 ◽

Vol 456 (1-2) ◽

pp. 163-169 ◽

Cited By ~ 85

Author(s):

Ling-Mei Wu ◽

Wen-Hsiung Wang ◽

Yung-Fu Hsu ◽

Shan Trong

Keyword(s):

Recrystallization Behavior ◽

Homogenization Treatment ◽

Zr Alloy

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Effects of Homogenization Treatment on Microstructure and Properties of Mg-Zn-Nd-Cd-Zr Alloy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.399-401.76 ◽

2011 ◽

Vol 399-401 ◽

pp. 76-79 ◽

Cited By ~ 2

Author(s):

Xian Lan Liu ◽

Chu Ming Liu ◽

Wen Yu Zhang ◽

Hui Zhong Li ◽

Su Min Zeng

Keyword(s):

Electron Microscope ◽

Artificial Aging ◽

Optical Microscope ◽

Peak Hardness ◽

Homogenization Treatment ◽

Transmission Electron ◽

Aging Conditions ◽

Second Phases ◽

Scanning Electron ◽

Zr Alloy

Mcrostructure and properties of Mg-Zn-Nd-Cd-Zr alloy have been investigated on different solution treatments and artificial aging conditions by optical microscope, SEM (scanning electron microscope) and TEM(transmission electron microscope). The results indicate that the grain boundarys become thinner and the second phases distributed on the grain boundarys become finer by double-stage homogenization at 400°C for 2h plus 460°C for 12h than that of homogenization at 420°C for 24h. Double-stage homogenization brings a greater peak-ageing hardness and longer time to reach peak hardness 20h about., and the ultimate tensile strength is 345MPa at 140°C for 34h, higher 15% than that of as-extruded

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Investigations on High Heating Rate and Precision Calibration of the Thermoelectric Characteristics of the Tool and Work Materials

CIRP Annals ◽

10.1016/s0007-8506(07)63359-9 ◽

1983 ◽

Vol 32 (1) ◽

pp. 47-51 ◽

Cited By ~ 3

Author(s):

H.J. Xu ◽

X.C. Tong ◽

X.S. Zhao ◽

Y.Z. Zhang ◽

J. Peklenik

Keyword(s):

Heating Rate ◽

High Heating Rate ◽

High Heating

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Metal oxide nanoparticles formed from solution droplets under high heating rate

Experimental Thermal and Fluid Science ◽

10.1016/j.expthermflusci.2012.03.029 ◽

2012 ◽

Vol 43 ◽

pp. 23-31 ◽

Cited By ~ 1

Author(s):

Francesco Carbone ◽

Alberto C. Barone ◽

Federico Beretta ◽

Andrea D’Anna

Keyword(s):

Metal Oxide ◽

Heating Rate ◽

Metal Oxide Nanoparticles ◽

Oxide Nanoparticles ◽

High Heating Rate ◽

High Heating

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High heating rate sintering and microstructural evolution assessment using the discrete element method

Open Ceramics ◽

10.1016/j.oceram.2021.100182 ◽

2021 ◽

Vol 8 ◽

pp. 100182

Author(s):

Mirele Horsth Paiva Teixeira ◽

Vasyl Skorych ◽

Rolf Janssen ◽

Sergio Yesid Gómez González ◽

Agenor De Noni Jr ◽

...

Keyword(s):

Discrete Element Method ◽

Heating Rate ◽

Microstructural Evolution ◽

Discrete Element ◽

High Heating Rate ◽

High Heating ◽

Element Method

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STRUCTURAL CHARACTERISTICS OF (Ba,Sr)TiO3 THIN FILMS BY RAPID THERMAL ANNEALING

Surface Review and Letters ◽

10.1142/s0218625x07009153 ◽

2007 ◽

Vol 14 (01) ◽

pp. 141-145

Author(s):

Q. Y. ZHANG ◽

S. W. JIANG ◽

Y. R. LI

Keyword(s):

Thin Films ◽

Grain Size ◽

Heating Rate ◽

Thermal Annealing ◽

Rapid Thermal Annealing ◽

Rapid Heating ◽

Structural Characteristics ◽

High Heating Rate ◽

Duration Time ◽

Temperature Heating

The rapid thermal annealing (RTA) process was adapted to crystallize the amorphous ( Ba,Sr ) TiO 3 thin films prepared on Si (111) substrates by RF magnetic sputtering deposition. The effect of annealing temperature, heating rate and duration time on crystallization was studied through X-ray diffraction and atomic force microscopy. The result shows that the crystallinity and grain size were strongly dependent on the temperature, heating rate, and duration time. Higher heating rate leads to smaller grain size. In high heating rate, the grain size shows different dependence of temperature from that of low heating rate. For a heating rate of 50°C/s, the grain size decreased with temperature increasing below 700°C, while after that temperature, the grain size increased slightly with the temperature increasing. At a certain temperature, the crystallinity and surface roughness improved with increase in annealing time, while grain size changed little. The effect of rapid heating rate on the nucleation and grain growth has been discussed, which contributes to the limited grain size of the annealed ( Ba,Sr ) TiO 3 thin films.

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State-of-art of silver and gold nanoparticles synthesis routes, characterization and applications: a review

Zeitschrift für Physikalische Chemie ◽

10.1515/zpch-2021-3084 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Faisal Ali ◽

Muhammad Hamza ◽

Munawar Iqbal ◽

Beriham Basha ◽

Norah Alwadai ◽

...

Keyword(s):

Electron Microscope ◽

X Rays ◽

Ag Nps ◽

Au Nps ◽

Advantages And Disadvantages ◽

Transmission Electron ◽

Synthesis Properties ◽

Synthesis Routes ◽

Synthesis Approach ◽

Comprehensive Study

Abstract To date, the noble metal-based nanoparticles have been used in every field of life. The Au and Ag nanoparticles (NPs) have been fabricated employing different techniques to tune the properties. In this study, the methodologies developed and adopted for the fabrication of Au and Ag have been discussed, which include physical, chemical and biological routes. The Au and Ag characteristics (morphology, size, shape) along with advantages and disadvantages are discussed. The Au and Ag NPs catalytic and biomedical applications are discussed. For the Ag and Au NPs characterization, SEM (scanning electron microscope), TEM (transmission electron microscope), FTIR (Fourier transform infra-red spectroscopy), XRD (X-rays diffraction) and DLS (dynamic light scattering) techniques are employed. The properties of Au and Ag NPs found dependent to synthesis approach, i.e., the size, shape and morphologies, which showed a promising Catalytic, drug delivery and antimicrobial agent applications. The review is a comprehensive study for the comparison of Au and Ag NPs synthesis, properties and applications in different fields.

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