Variations of Internal Stresses within a Rafted Superalloy during High Temperature Mechanical Testing: An in situ XRD Study

2013 ◽  
Vol 1528 ◽  
Author(s):  
Alain Jacques ◽  
Laura Dirand ◽  
Thomas Schenk ◽  
Jean Philippe Chateau-Cornu ◽  
Olivier Ferry ◽  
...  
Keyword(s):  
Experimental Data ◽  
Load Transfer ◽  
High Energy ◽  
Internal Stresses ◽  
Strain Behavior ◽  
In Situ Xrd ◽  
Xrd Study ◽  
Dislocation Densities ◽  
In Situ Experiments

ABSTRACTModeling of the mechanical behavior of a two-phased material, even with a simple microstructure such as a single crystal superalloy remains a difficult task, for lack of phase specific experimental data. The combination of Three Crystal Diffractometry with high energy synchrotron radiation and in situ experiments can give access to such data in real time. A few examples are given on load transfer between phases, dislocation densities, and the stress – strain behavior of a phase.

High-Energy/Power and Low-Temperature Cathode for Sodium-Ion Batteries: In Situ XRD Study and Superior Full-Cell Performance

2017 ◽  
Vol 29 (33) ◽  
pp. 1701968 ◽  
Author(s):  
Jin-Zhi Guo ◽  
Peng-Fei Wang ◽  
Xing-Long Wu ◽  
Xiao-Hua Zhang ◽  
Qingyu Yan ◽  
...  
Keyword(s):  
Low Temperature ◽  
High Energy ◽  
Cell Performance ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Full Cell ◽  
In Situ Xrd ◽  
Xrd Study

Electron and ion irradiation-induced dissolution of mechanical twins in the intermetalic U3Si: An in situ HVEM study

1989 ◽  
Vol 47 ◽  
pp. 652-653
Author(s):  
Charles W. Allen ◽  
Robert C. Birtcher
Keyword(s):  
Elevated Temperatures ◽  
Ion Irradiation ◽  
Ion Beam ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Heavy Ion ◽  
High Energy ◽  
Mechanical Twinning ◽  
In Situ Experiments

The uranium silicides, including U3Si, are under study as candidate low enrichment nuclear fuels. Ion beam simulations of the in-reactor behavior of such materials are performed because a similar damage structure can be produced in hours by energetic heavy ions which requires years in actual reactor tests. This contribution treats one aspect of the microstructural behavior of U3Si under high energy electron irradiation and low dose energetic heavy ion irradiation and is based on in situ experiments, performed at the HVEM-Tandem User Facility at Argonne National Laboratory. This Facility interfaces a 2 MV Tandem ion accelerator and a 0.6 MV ion implanter to a 1.2 MeV AEI high voltage electron microscope, which allows a wide variety of in situ ion beam experiments to be performed with simultaneous irradiation and electron microscopy or diffraction.At elevated temperatures, U3Si exhibits the ordered AuCu3 structure. On cooling below 1058 K, the intermetallic transforms, evidently martensitically, to a body-centered tetragonal structure (alternatively, the structure may be described as face-centered tetragonal, which would be fcc except for a 1 pet tetragonal distortion). Mechanical twinning accompanies the transformation; however, diferences between electron diffraction patterns from twinned and non-twinned martensite plates could not be distinguished.

scholarly journals Dislocation densities in a low-carbon steel during martensite transformation determined by in situ high energy X-Ray diffraction

2021 ◽  
Vol 800 ◽  
pp. 140249
Author(s):  
Juan Macchi ◽  
Steve Gaudez ◽  
Guillaume Geandier ◽  
Julien Teixeira ◽  
Sabine Denis ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Martensite Transformation ◽  
Low Carbon Steel ◽  
High Energy ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dislocation Densities

Preparation of nanoanatase and its in situ XRD study

2008 ◽  
Vol 18 (2) ◽  
pp. 469-473 ◽  
Author(s):  
Guo-hua LI ◽  
Yi-fan ZHENG ◽  
Chun-an MA ◽  
Wei TIAN
Keyword(s):  
In Situ Xrd ◽  
Xrd Study

In Situ Synchrotron Measurement of Internal Stresses in Solid-Oxide Fuel Cell during Red-Ox Cycle

2008 ◽  
Vol 571-572 ◽  
pp. 339-344 ◽  
Author(s):  
Keisuke Tanaka ◽  
Yoshiaki Akiniwa ◽  
Hidehiko Kimura ◽  
Kenji Ukai ◽  
Misuzu Yokayama ◽  
...  
Keyword(s):  
Internal Stress ◽  
Thermal Cycle ◽  
High Energy ◽  
Thermal Reduction ◽  
Solid Oxide ◽  
Internal Stresses ◽  
Oxide Fuel ◽  
Air Atmosphere ◽  
Unit Cells

The internal stress in solid-oxide fuel cells (SOFCs) was evaluated during the thermal, reduction and re-oxidation cycles by using high-energy X-ray synchrotron radiation of about 70 keV at Beam line BL02B1 of SPring-8. The oxidized cell has a compression of about 400 MPa in the c-ScSZ electrolyte and a tension of 50-100 MPa in the NiO-YSZ anode at room temperature. In-situ measurement during the thermal cycle in an air atmosphere, the internal stress decreased with increasing temperature, becoming approximately zero at 1000 K. After the thermal cycle, the internal stress returned to its initial value. In the measurement during the reduction cycle, the internal stress was smaller than that measured during the cooling cycle after the anode was reduced from NiO-YSZ to Ni-YSZ. In the re-oxidation cycle of a reduced cell, the internal stress in the electrolyte went into tension above 800 K when the anode was re-oxidized from Ni-YSZ to NiO-YSZ. This tensile stress is responsible for possible fracture of unit cells in SOFCs.

In Situ XRD Study of Silicon, Lead and Bismuth Negative Electrodes in Nonaqueous Sodium Cells

2014 ◽  
Vol 161 (3) ◽  
pp. A416-A421 ◽  
Author(s):  
L. D. Ellis ◽  
B. N. Wilkes ◽  
T. D. Hatchard ◽  
M. N. Obrovac
Keyword(s):  
In Situ Xrd ◽  
Xrd Study ◽  
Negative Electrodes
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