scholarly journals Electron Beam Induced Phase Transformation in Zinc Phosphate

2014 ◽  
Vol 20 (S3) ◽  
pp. 1660-1661
Author(s):  
Kun He ◽  
Xian Zhang ◽  
Yu-Peng Lu ◽  
Reza Shahbazian Yassar
Keyword(s):  
Phase Transformation ◽  
Electron Beam ◽  
Zinc Phosphate

Selective electron beam melting of NiTi: Microstructure, phase transformation and mechanical properties

2019 ◽  
Vol 744 ◽  
pp. 290-298 ◽  
Author(s):  
Quan Zhou ◽  
Muhammad Dilawer Hayat ◽  
Gang Chen ◽  
Song Cai ◽  
Xuanhui Qu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Transformation ◽  
Electron Beam ◽  
Electron Beam Melting ◽  
Selective Electron Beam Melting

Humidity sensitive irreversible phase transformation of an open-framework Zinc phosphate and its water-assisted high proton conduction properties

2021 ◽  
Author(s):  
Jing-Wei Yu ◽  
Hai-Jiao Yu ◽  
Qiu Ren ◽  
Jin Zhang ◽  
Yang Zou ◽  
...  
Keyword(s):  
Phase Transformation ◽  
High Temperature ◽  
Zinc Phosphate ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
Open Framework ◽  
High Proton ◽  
Irreversible Phase Transformation ◽  
Low Temperature Phase ◽  
Conduction Properties

Open-framework zinc phosphate (NMe4)(ZnP2O8H3) undergoes irreversible phase transformation. Structural transformation with α (NMe4.Zn[HPO4][H2PO4] the low-temperature phase) and β (NMe4.ZnH3[PO4]2 the high-temperature phase) (Tc=149 °C) and conduction properties were investigated by...

Austenite phase transformation of SKD11 by surface heat treatment with a focused electron beam

2017 ◽  
Vol 321 ◽  
pp. 247-256 ◽  
Author(s):  
Eun Goo Kang ◽  
Honzong Choi ◽  
Byung-Kwon Min ◽  
Sang Jo Lee
Keyword(s):  
Heat Treatment ◽  
Phase Transformation ◽  
Electron Beam ◽  
Austenite Phase ◽  
Surface Heat

The Effects of Electron Beam Irradiation on Structural and Optical Properties of TiO2 Particles

2017 ◽  
Vol 888 ◽  
pp. 297-303 ◽  
Author(s):  
Cik Rohaida Che Hak ◽  
Siti Salwa Zainal Abidin ◽  
Nur Ubaidah Saidin ◽  
Siti Aishah Ahmad Fuzi ◽  
Yusof Abdullah ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Optical Properties ◽  
Photocatalytic Activity ◽  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Low Dose ◽  
Beam Irradiation ◽  
Structural And Optical Properties ◽  
Dose Irradiation ◽  
Indirect Band Gap

The effect of electron irradiation on structural and optical properties of TiO2 particles has been studied. The crystallinity change was observed at low dose irradiation (4-20 kGy) while phase transformation from pure anatase to mixture of anatase-rutile was inevitable after 100 kGy without significant change in crystallinity. The highest fraction of rutile:anatase ratio was 20:80 obtained at 700 kGy. Morphology study demonstrated that TiO2 particles were spherical, nano-sized and heavily agglomerated with no obvious microstructural changes were observed after irradiation. The direct and indirect band gap (Eg) showed a decrement at low dose but re-increased after irradiation at >100 kGy. The highest Eg was at 700 kGy which can be explained by the changes of TiO2 atomic structure in the presence of mixture anatase:rutile. Therefore, the electron beam irradiation does affect both structural and optical properties of TiO2 nanoparticles. This is expected to affect the photocatalytic activity of TiO2.

Residual Stress Modelling in a Thick-Sectioned Electron Beam Weld

2013 ◽  
Author(s):  
Ben Pellereau ◽  
Chris Gill ◽  
Paul Hurrell ◽  
Ed Kingston
Keyword(s):  
Residual Stress ◽  
Phase Transformation ◽  
Electron Beam ◽  
Heat Source ◽  
Material Model ◽  
Hole Drilling ◽  
Electron Beam Weld ◽  
Element Analysis ◽  
Stress Measurements ◽  
Mesh Density

Previous work presented residual stress measurements in an electron beam weld in a thick section ferritic forging [1]; this weld was also modelled using finite element analysis. Due to the tool used to model the heat source, the mesh density in the region of the weld was limited. This work improves on the previous work by using a DFLUX subroutine to provide a mesh-independent heat source input, allowing a better mesh in the region of the weld. The modelling was carried out in Abaqus[2] using the VFT[3] user material model to allow phase transformation effects to be included. This however does not include creep properties and so the as-welded stresses were seeded on to a model that used Abaqus built-in material properties in order to model the heat treatment. The results of this analysis have been compared with analyses run using just the VFT material model (with no creep) and using just the Abaqus properties (with no phase transformation) in order to investigate the sensitivity of the stresses predicted to the material model used. The results of all three analyses have also been compared to the results of the original analysis and with the deep hole drilling residual stress measurements.

scholarly journals Effect of Phase Transformation on Tensile Behavior of Co–Cr–Mo Alloy Fabricated by Electron-beam Melting

2014 ◽  
Vol 61 (5) ◽  
pp. 234-242 ◽  
Author(s):  
Shi-Hai SUN ◽  
Yuichiro KOIZUMI ◽  
Shingo KUROSU ◽  
Yun-Ping LI ◽  
Akihiko CHIBA
Keyword(s):  
Phase Transformation ◽  
Electron Beam ◽  
Electron Beam Melting ◽  
Tensile Behavior
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