scholarly journals In Situ High Energy X-ray Diffraction Characterization of Phase Transformations and Mechanical Behaviors in Rapidly Solidified Titanium and Stainless Steel Alloys

2021 ◽  
Author(s):  
Nathan Johnson
Keyword(s):  
Stainless Steel ◽  
Phase Transformations ◽  
High Energy ◽  
Mechanical Behaviors ◽  
X Ray Diffraction ◽  
Steel Alloys ◽  
X Ray ◽  
Rapidly Solidified

scholarly journals In-Situ Characterization by High-Energy X-ray Diffraction of the Phase Transformations Leading to Transformation-Induced Plasticity-Aided Bainitic Steel

2019 ◽  
Vol 3 (4) ◽  
pp. 25
Author(s):  
Zélie Tournoud ◽  
Frédéric De Geuser ◽  
Gilles Renou ◽  
Didier Huin ◽  
Patricia Donnadieu ◽  
...  
Keyword(s):  
Carbon Content ◽  
Phase Transformations ◽  
High Energy ◽  
Heat Treatments ◽  
Treatment Temperature ◽  
Bainitic Steel ◽  
X Ray Diffraction ◽  
Transformation Induced Plasticity ◽  
X Ray

The phase transformations occurring during the heat treatments leading to transformation-induced plasticity (TRIP)-aided bainitic steel have been investigated in-situ by high-energy X-ray diffraction (HEXRD) conducted with synchrotron light at 90 keV. Direct microstructure characterization has been performed by electron microscopy using electron backscatter diffraction and orientation and phase mapping in a transmission electron microscope. HEXRD data allow the quantification of the evolution of the austenite phase fraction with the heat treatments, as well as its carbon content and the fraction of carbides, from the lattice parameter evolution. It is shown that different combinations of austenite fraction and carbon content can be reached by adjusting the heat treatment temperature.

scholarly journals In situ characterization of residual stress evolution during heat treatment of SiC/SiC ceramic matrix composites using high‐energy X‐ray diffraction

2020 ◽  
Vol 104 (3) ◽  
pp. 1424-1435
Author(s):  
Michael W. Knauf ◽  
Craig P. Przybyla ◽  
Paul A. Shade ◽  
Jun‐Sang Park ◽  
Andrew J. Ritchey ◽  
...  
Keyword(s):  
Ceramic Matrix Composites ◽  
High Energy ◽  
Matrix Composites ◽  
Stress Evolution ◽  
X Ray Diffraction ◽  
In Situ Characterization ◽  
X Ray ◽  
Sic Ceramic

scholarly journals In-Situ High-Energy X-ray Diffraction During a Linear Deposition of 308 Stainless Steel via Wire Arc Additive Manufacture

2020 ◽  
Vol 51 (3) ◽  
pp. 1379-1394 ◽  
Author(s):  
D. W. Brown ◽  
A. Losko ◽  
J. S. Carpenter ◽  
B. Clausen ◽  
J. C. Cooley ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Energy ◽  
Additive Manufacture ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals In-situ high-energy X-ray characterization of neutron irradiated HT-UPS stainless steel under tensile deformation

2018 ◽  
Vol 156 ◽  
pp. 330-341 ◽  
Author(s):  
Chi Xu ◽  
Xuan Zhang ◽  
Yiren Chen ◽  
Meimei Li ◽  
Jun-Sang Park ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Tensile Deformation ◽  
High Energy ◽  
X Ray

scholarly journals Use of Space-Resolved in-Situ High Energy X-ray Diffraction for the Characterization of the Compositional Dependence of the Austenite-to-Ferrite Transformation Kinetics in Steels

2019 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Imed-Eddine Benrabah ◽  
Hugo Paul Van Landeghem ◽  
Frédéric Bonnet ◽  
Florence Robaut ◽  
Alexis Deschamps
Keyword(s):  
Growth Kinetics ◽  
Local Equilibrium ◽  
High Energy ◽  
Transformation Kinetics ◽  
Compositional Dependence ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ferrite Growth

In-situ high energy X-Ray diffraction (HEXRD) was used on compositionally graded steels to study the effect of substitutional elements on ferrite growth kinetics in Fe–C–X and Fe–C–X–Y systems. Two systems were selected to illustrate the applicability of the combinatorial approach in studying such transformations, Fe–C–Mn and Fe–C–Mn–Mo. Comparison between the measured ferrite growth kinetics using HEXRD and the predicted ones using Para-Equilibrium (PE) and Local Equilibrium with Negligible Partitioning (LENP) models indicates that the fractions reached at the stasis of transformation are lower than the predicted ones. Experiments indicated a deviation of measured kinetics from both PE and LENP models when increasing Mn and decreasing Mo (in Fe–C–Mn–Mo system). The large amount of data that can be obtained using this approach can be used for validating existing models describing ferrite growth kinetics.

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