scholarly journals Unveiling the optical parameters of vanadium dioxide in the phase transition region: a hybrid modeling approach

RSC Advances ◽  
2020 ◽  
Vol 10 (50) ◽  
pp. 29945-29955
Author(s):  
Mehmet Cihan Cakir ◽  
Hasan Kocer ◽  
Yilmaz Durna ◽  
Deniz Umut Yildirim ◽  
Amir Ghobadi ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Region ◽  
Dynamic Behavior ◽  
Vanadium Dioxide ◽  
Hybrid Modeling ◽  
Optical Parameters ◽  
Modeling Approach ◽  
Metallic Inclusions ◽  
Phase Transition Region

A universal hybrid modeling approach is developed to model VO2 in transition, revealing dynamic behavior of metallic inclusions and grain shapes.

scholarly journals Current-modulated optical properties of vanadium dioxide thin films in the phase transition region

2014 ◽  
Vol 105 (21) ◽  
pp. 211104 ◽  
Author(s):  
Shuyan Zhang ◽  
Mikhail A. Kats ◽  
Yanjie Cui ◽  
You Zhou ◽  
Yu Yao ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Optical Properties ◽  
Transition Region ◽  
Vanadium Dioxide ◽  
Phase Transition Region ◽  
Vanadium Dioxide Thin Films

scholarly journals Effects of deformation on the microstructure of a Ti-V microalloyed steel in the phase transition region

2004 ◽  
Vol 57 (4) ◽  
pp. 303-311
Author(s):  
Wiliam Regone ◽  
Sérgio Tonini Button
Keyword(s):  
Phase Transition ◽  
Phase Transformation ◽  
Transition Region ◽  
Microstructural Evolution ◽  
Microalloyed Steel ◽  
Hot Forging ◽  
Microalloyed Steels ◽  
Air Cooling ◽  
Water Cooling ◽  
Phase Transition Region

Microalloyed steels are used in the forging of many automotive parts like crankshafts and connecting rods. They are hot worked in a sequence of stages that includes the heating to the soaking temperature, followed by forging steps, and finally the controlled cooling to define the microstructure and mechanical properties. In this work it was investigated the thermomechanical behavior and the microstructural evolution of a Ti-V microalloyed steel in the phase transition region. Torsion tests were done with multiple steps with true strain equal to 0.26 in each step. After each torsion step the samples were continuous cooled for 15 seconds to simulate hot forging conditions. These tests provided results for the temperature at the beginning of the phase transformation, and allowed to analyze the microstructural changes. Also, workability tests were held to analyze the microstructural evolution by optical and scanning electron microscopy. Results from the torsion tests showed that the temperature for the beginning of phase transformation is about 700 ºC. Workability tests held at 700 ºC followed by water-cooling presented microstructures with different regions: strain hardened, and static and dynamic recrystallized. Workability tests at 700 ºC followed by air-cooling showed a complex microstructure with ferrite, bainite and martensite, while tests at 650 and 600 ºC followed by water-cooling showed a microstructure with allotriomorphic ferrite present in the grain boundaries of the previous austenite.

Diffraction of a Plane Electromagnetic Wave by a VO2 Microsphere in the Phase Transition Region

2020 ◽  
Vol 62 (6) ◽  
pp. 993-997
Author(s):  
I. V. Bychkov ◽  
D. A. Kuzmin ◽  
V. A. Tolkachev ◽  
A. P. Kamantsev ◽  
V. V. Koledov ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electromagnetic Wave ◽  
Transition Region ◽  
Plane Electromagnetic Wave ◽  
Phase Transition Region

Polarization echo in ferroelectric phase transition region

1978 ◽  
Vol 22 (1) ◽  
pp. 755-757
Author(s):  
V. S. Romanov ◽  
V. I. Bashkov ◽  
V. M. Berezov ◽  
V. D. Korepanov
Keyword(s):  
Phase Transition ◽  
Transition Region ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Phase Transition Region
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