In situ observation of the olivine-spinel phase transformation in Fe2SiO4using synchrotron radiation

1987 ◽  
Vol 92 (B7) ◽  
pp. 6207 ◽  
Author(s):  
Takehiko Yagi ◽  
Masaki Akaogi ◽  
Osamu Shimomura ◽  
Toshihiro Suzuki ◽  
Syun-Iti Akimoto
Keyword(s):  
Phase Transformation ◽  
Synchrotron Radiation ◽  
Spinel Phase ◽  
In Situ Observation

In Situ Observation of Weld Solidification and Phase Transformation Process Using Synchrotron Radiation

2007 ◽  
Vol 539-543 ◽  
pp. 3820-3825 ◽  
Author(s):  
Yuichi Komizo ◽  
Hidenori Terasaki ◽  
Mitsuharu Yonemura ◽  
Takahiro Osuki
Keyword(s):  
Phase Transformation ◽  
Synchrotron Radiation ◽  
Welding Process ◽  
Fusion Welding ◽  
Morphological Observation ◽  
Observation System ◽  
Imaging Plate ◽  
In Situ Observation ◽  
Welding Processes

In order to understand the microstructure changes during welding processes , kinetic information about the phase transformation is essential. In our research group, in-situ observation systems consisting of undulator beam and imaging plate and two dimensional pixel detector have recently been used. These make it possible that phase transformation can be identified in real-time under the condition of directional-oriented solidification . In the present work, a combination of analyzing method: the in-situ observation system by X-ray diffraction technique using intense synchrotron radiation, and morphological observation by high-temperature laser scanning confocal microscopy is suggested to analyze the phase transformation during the welding process. Using the results acquired by these analysis methods, phase evolution of hypereutectoid carbon steel, during fusion welding was analyzed. The primary phase was directly identified as an austenite phase. Precipitation of pearlite phase was observed followed by the martensitic transformation.

scholarly journals In situ Observation of Phase Transformation in MnAl(C) Magnetic Materials

Materials ◽  
2017 ◽  
Vol 10 (9) ◽  
pp. 1016 ◽  
Author(s):  
Ping-Zhan Si ◽  
Hui-Dong Qian ◽  
Chul-Jin Choi ◽  
Jihoon Park ◽  
Sangho Han ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Magnetic Materials ◽  
In Situ Observation

In Situ Observation of a Phase Transformation in α-(BEDT-TTF)2I3using a Contactless Technique

1987 ◽  
Vol 91 (9) ◽  
pp. 909-911 ◽  
Author(s):  
K. Späth ◽  
F. Gross ◽  
C. P. Heidmann ◽  
K. Andres
Keyword(s):  
Phase Transformation ◽  
In Situ Observation

scholarly journals Quantitative Study of Electron Radiation Damage by in Situ Observation of the Phase Transformation from CaCO3 to CaO as a function of the accelerating voltage (20-300 kV)

2013 ◽  
Vol 19 (S2) ◽  
pp. 1214-1215 ◽  
Author(s):  
U. Golla-Schindler ◽  
W. Schweigert ◽  
G. Benner ◽  
A. Orchowski ◽  
U. Kaiser
Keyword(s):  
Phase Transformation ◽  
Radiation Damage ◽  
Quantitative Study ◽  
In Situ Observation ◽  
Electron Radiation

Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 – August 8, 2013.

scholarly journals In-situ characterization of growth of isothermal ω phase in metastable β-Ti alloy TIMETAL LCB

2020 ◽  
Vol 321 ◽  
pp. 11037
Author(s):  
J. Nejezchlebova ◽  
L. Bodnarova ◽  
M. Janovska ◽  
P. Sedlak ◽  
H. Seiner ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Elastic Constants ◽  
Elastic Anisotropy ◽  
Solid Phase ◽  
In Situ Observation ◽  
Ω Phase ◽  
Resonant Ultrasound ◽  
Isothermal Ageing

Metastable β-Ti alloys exhibit various solid-solid phase transitions. Our study is focused on the characterization of the diffusion controlled β→ωiso phase transition. The particles of ω phase play an important part in thermomechanical treatment since they serve as heterogeneous nucleation sites for precipitation of finely dispersed particles of hexagonal α phase. The in-situ observation of the growth of particles of ω phase could be difficult by conventional techniques. However, it was shown recently that the ω phase significantly influences the elastic constants of the material, and the different forms of ω phase have different effects on the elastic anisotropy, as well as on the internal friction coefficients. Therefore, the β→ω phase transformation could be in-situ observed by the precise measurement of the tensor of elastic constants. In this contribution, we present the study of the kinetics of the β→ωiso phase transformation by resonant ultrasound spectroscopy. The polycrystalline samples of TIMETAL LCB alloy were in-situ examined by this technique during isothermal and non-isothermal ageing at temperatures up to 300 °C.

In situ observation of solidification of silicon steel by synchrotron radiation X-ray topography

1987 ◽  
Vol 18 (4) ◽  
pp. 723-727 ◽  
Author(s):  
Tooru Matsumiya ◽  
Wataru Yamada ◽  
Tetsuro Ohashi ◽  
Osamu Nittono
Keyword(s):  
Synchrotron Radiation ◽  
Silicon Steel ◽  
In Situ Observation ◽  
X Ray
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