In-Situ Neutron Diffraction Studies of Mixed Conducting Sr-Fe-Co-O Materials

1998 ◽  
Vol 547 ◽  
Author(s):  
B.J. Mitchell ◽  
J.W. Richardson ◽  
B. Ma ◽  
J.P. Hodges
Keyword(s):  
Neutron Diffraction ◽  
Elevated Temperatures ◽  
Ceramic Membrane ◽  
Membrane Material ◽  
Partial Pressures ◽  
Wide Range ◽  
Dense Ceramic ◽  
Scattering Lengths ◽  
In Situ Neutron Diffraction

AbstractSrFeCo0.5Oy has been identified as a potential dense ceramic membrane material used for gas separation at elevated temperatures. Neutrons play an important role in the study of such materials, particularly due to the favorable scattering lengths of Fe, Co and O. In-situ neutron diffraction experiments allow these materials to be studied under a wide range of temperatures and oxygen partial pressures. Results indicate very complex behavior of individual phases during synthesis and under operational membrane conditions.

scholarly journals Temperature dependence of elastic and plastic deformation behavior of a refractory high-entropy alloy

2020 ◽  
Vol 6 (37) ◽  
pp. eaaz4748 ◽  
Author(s):  
Chanho Lee ◽  
George Kim ◽  
Yi Chou ◽  
Brianna L. Musicó ◽  
Michael C. Gao ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Neutron Diffraction ◽  
Deformation Behavior ◽  
Elevated Temperatures ◽  
High Entropy ◽  
Plastic Deformation Behavior ◽  
Deformation Behaviors ◽  
In Situ Neutron Diffraction ◽  
Elastic And Plastic Deformation

Single-phase solid-solution refractory high-entropy alloys (HEAs) show remarkable mechanical properties, such as their high yield strength and substantial softening resistance at elevated temperatures. Hence, the in-depth study of the deformation behavior for body-centered cubic (BCC) refractory HEAs is a critical issue to explore the uncovered/unique deformation mechanisms. We have investigated the elastic and plastic deformation behaviors of a single BCC NbTaTiV refractory HEA at elevated temperatures using integrated experimental efforts and theoretical calculations. The in situ neutron diffraction results reveal a temperature-dependent elastic anisotropic deformation behavior. The single-crystal elastic moduli and macroscopic Young’s, shear, and bulk moduli were determined from the in situ neutron diffraction, showing great agreement with first-principles calculations, machine learning, and resonant ultrasound spectroscopy results. Furthermore, the edge dislocation–dominant plastic deformation behaviors, which are different from conventional BCC alloys, were quantitatively described by the Williamson-Hall plot profile modeling and high-angle annular dark-field scanning transmission electron microscopy.

Load Partition in NiTi Shape Memory Alloy Polycrystals Investigated by In-Situ Neutron Diffraction and Micromechanics Modelling

2002 ◽  
Vol 404-407 ◽  
pp. 829-834 ◽  
Author(s):  
Petr Šittner ◽  
Václav Novák ◽  
Petr Lukáš ◽  
D. Lugovyy ◽  
D. Neov ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Niti Shape Memory Alloy ◽  
In Situ Neutron Diffraction

Study of tempering behavior of lath martensite using in situ neutron diffraction

2015 ◽  
Vol 107 ◽  
pp. 29-32 ◽  
Author(s):  
Z.M. Shi ◽  
W. Gong ◽  
Y. Tomota ◽  
S. Harjo ◽  
J. Li ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Lath Martensite ◽  
In Situ Neutron Diffraction

On the response of titanium sulfocarbide to stress studied by in situ neutron diffraction and the elastoplastic self-consistent approach

2011 ◽  
Vol 65 (7) ◽  
pp. 573-576 ◽  
Author(s):  
M. Shamma ◽  
V. Presser ◽  
B. Clausen ◽  
D. Brown ◽  
O. Yeheskel ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Self Consistent ◽  
In Situ Neutron Diffraction ◽  
Consistent Approach

In situ neutron diffraction study of fatigue behavior of CrFeCoNiMo0.2 high entropy alloy

2021 ◽  
Vol 139 ◽  
pp. 107371
Author(s):  
Haiyan He ◽  
Bing Wang ◽  
Dong Ma ◽  
Alexandru D. Stoica ◽  
Zhenduo Wu ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Diffraction Study ◽  
Fatigue Behavior ◽  
Neutron Diffraction Study ◽  
High Entropy Alloy ◽  
High Entropy ◽  
In Situ Neutron Diffraction
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