Observation of a metastable phase during solidification of undercooled Nd–Fe–B alloy melts by in situ diffraction experiments using synchrotron radiation

2004 ◽  
Vol 85 (12) ◽  
pp. 2232-2234 ◽  
Author(s):  
Thomas Volkmann ◽  
Jörn Strohmenger ◽  
Jianrong Gao ◽  
Dieter M. Herlach
Keyword(s):  
Synchrotron Radiation ◽  
Metastable Phase ◽  
In Situ Diffraction

Metastable Phase Formation in Undercooled Nd-Fe-B Alloys Investigated by In Situ Diffraction Using Synchrotron Radiation

2006 ◽  
Vol 508 ◽  
pp. 81-86 ◽  
Author(s):  
Joern Strohmenger ◽  
Thomas Volkmann ◽  
J.R. Gao ◽  
Dieter M. Herlach
Keyword(s):  
Synchrotron Radiation ◽  
Metastable Phase ◽  
European Synchrotron Radiation Facility ◽  
Wide Composition Range ◽  
Short Period ◽  
Metastable Phase Formation ◽  
Undercooled Melt ◽  
Electromagnetically Levitated ◽  
In Situ Diffraction

Diffraction experiments on electromagnetically levitated Nd-Fe-B alloys during solidification of the undercooled melt have been performed at the European Synchrotron Radiation Facility (ESRF). By using high intensity synchrotron radiation complete diffraction spectra could be detected within a short period of some seconds thus enabling the observation of metastable solidification products that exhibits a limited lifetime. A metastable phase that crystallizes in wide composition range and that initiates the solidification of the stable Nd2Fe14B1-phase (φ-phase) have been observed.

Measurement of Stress in Phosphated-Iron Oxide Layers by In-Situ Diffraction of Synchrotron Radiation

2002 ◽  
Vol 404-407 ◽  
pp. 809-816 ◽  
Author(s):  
Benoit Panicaud ◽  
Pierre Olivier Renault ◽  
Jean Luc Grosseau-Poussard ◽  
J.F. Dinhut ◽  
D. Thiaudière ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Synchrotron Radiation ◽  
Oxide Layers ◽  
In Situ Diffraction

scholarly journals Evolution of structure and local magnetic fields during crystallization of HITPERM glassy alloys studied by in situ diffraction and nuclear forward scattering of synchrotron radiation

2015 ◽  
Vol 17 (42) ◽  
pp. 28239-28249 ◽  
Author(s):  
Marcel Miglierini ◽  
Márius Pavlovič ◽  
Vít Procházka ◽  
Tomáš Hatala ◽  
Gerhard Schumacher ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Metallic Glasses ◽  
Local Structure ◽  
Hyperfine Interactions ◽  
Nuclear Forward Scattering ◽  
Glassy Alloys ◽  
Evolution Of Structure ◽  
Local Magnetic Fields ◽  
In Situ Diffraction

In situ transformation of local structure and hyperfine interactions are simultaneously followed in real time during temperature annealing of metallic glasses.

Thermal Stability of Retained Austenite in Low Alloyed TRIP-Steel Determined by High Energy Synchrotron Radiation

2013 ◽  
Vol 772 ◽  
pp. 129-133
Author(s):  
Stefan Brauser ◽  
Arne Kromm ◽  
Eitan Dabah ◽  
Thomas Kannengiesser ◽  
Michael Rethmeier
Keyword(s):  
Synchrotron Radiation ◽  
High Energy ◽  
Heating Process ◽  
Austenitic Phase ◽  
Trip Steels ◽  
The Stability ◽  
In Situ Diffraction ◽  
Kinetics Of ◽  
Thermal Stability Of

TRIP-steels offer a good combination between strength and ductility. Therefore TRIP-steels are widely used in the automobile industries. The aim of this work is to study the stability of involved phases during heating and to identify the kinetics of the occuring phase transformations. For that purpose, in-situ diffraction measurements, using high energy synchrotron radiation were conducted. The analysis revealed the decomposition of the metastable austenitic phase into carbide and ferrite along the heating process and the regeneration of the austenite by further heating of the sample.

Development of a long trace profiler in situ at National Synchrotron Radiation Research Center

2019 ◽  
Vol 90 (2) ◽  
pp. 021716 ◽  
Author(s):  
Shang-Wei Lin ◽  
Duan-Jen Wang ◽  
Huang-Wen Fu ◽  
Huang-Ming Tsai ◽  
Chih-Yu Hua ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Research Center ◽  
Radiation Research

scholarly journals A large-solid-angle X-ray Raman scattering spectrometer at ID20 of the European Synchrotron Radiation Facility

2017 ◽  
Vol 24 (2) ◽  
pp. 521-530 ◽  
Author(s):  
S. Huotari ◽  
Ch. J. Sahle ◽  
Ch. Henriquet ◽  
A. Al-Zein ◽  
K. Martel ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Raman Scattering ◽  
Solid Angle ◽  
European Synchrotron Radiation Facility ◽  
Electronic Excitations ◽  
Raman Scattering Spectroscopy ◽  
X Ray ◽  
Area Detector ◽  
Spectroscopic Tool

An end-station for X-ray Raman scattering spectroscopy at beamline ID20 of the European Synchrotron Radiation Facility is described. This end-station is dedicated to the study of shallow core electronic excitations using non-resonant inelastic X-ray scattering. The spectrometer has 72 spherically bent analyzer crystals arranged in six modular groups of 12 analyzer crystals each for a combined maximum flexibility and large solid angle of detection. Each of the six analyzer modules houses one pixelated area detector allowing for X-ray Raman scattering based imaging and efficient separation of the desired signal from the sample and spurious scattering from the often used complicated sample environments. This new end-station provides an unprecedented instrument for X-ray Raman scattering, which is a spectroscopic tool of great interest for the study of low-energy X-ray absorption spectra in materials under in situ conditions, such as in operando batteries and fuel cells, in situ catalytic reactions, and extreme pressure and temperature conditions.

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