Comparative study of structural properties of trehalose water solutions by neutron diffraction, synchrotron radiation and simulation

2004 ◽  
Vol 350 (1-3) ◽  
pp. E367-E370 ◽  
Author(s):  
A Cesaro ◽  
V Magazù ◽  
F Migliardo ◽  
F Sussich ◽  
M Vadalà
Keyword(s):  
Synchrotron Radiation ◽  
Neutron Diffraction ◽  
Comparative Study ◽  
Structural Properties ◽  
Water Solutions

Comparative study of the spectral and structural properties of EuAl3(BO3)4 single crystals with different morphologies

2017 ◽  
Vol 59 (12) ◽  
pp. 2423-2429
Author(s):  
T. N. Fursova ◽  
V. V. Kedrov ◽  
O. G. Rybchenko ◽  
S. Z. Shmurak ◽  
E. B. Yakimov ◽  
...  
Keyword(s):  
Comparative Study ◽  
Single Crystals ◽  
Structural Properties

Investigation of Residual Stress/Strain and Texture in a Large Dissimilar Metal Weld Using Synchrotron Radiation and Neutrons

2013 ◽  
Vol 772 ◽  
pp. 193-199 ◽  
Author(s):  
Carsten Ohms ◽  
Rene V. Martins
Keyword(s):  
Synchrotron Radiation ◽  
Neutron Diffraction ◽  
Residual Stresses ◽  
Large Scale ◽  
High Energy ◽  
X Ray Diffraction ◽  
Butt Weld ◽  
X Ray ◽  
Component Size ◽  
Thin Slice

Bi-metallic piping welds are frequently used in light water nuclear reactors to connect ferritic steel pressure vessel nozzles to austenitic stainless steel primary cooling piping systems. An important aspect for the integrity of such welds is the presence of residual stresses. Measurement of these residual stresses presents a considerable challenge because of the component size and because of the material heterogeneity in the weld regions. The specimen investigated here was a thin slice cut from a full-scale bi-metallic piping weld mock-up. A similar mock-up had previously been investigated by neutron diffraction within a European research project called ADIMEW. However, at that time, due to the wall thickness of the pipe, stress and spatial resolution of the measurements were severely restricted. One aim of the present investigations by high energy synchrotron radiation and neutrons used on this thin slice was to determine whether such measurements would render a valid representation of the axial strains and stresses in the uncut large-scale structure. The advantage of the small specimen was, apart from the easier manipulation, the fact that measurement times facilitated a high density of measurements across large parts of the test piece in a reasonable time. Furthermore, the recording of complete diffraction patterns within the accessible diffraction angle range by synchrotron X-ray diffraction permitted mapping the texture variations. The strain and stress results obtained are presented and compared for the neutron and synchrotron X-ray diffraction measurements. A strong variation of the texture pole orientations is observed in the weld regions which could be attributed to individual weld torch passes. The effect of specimen rocking on the scatter of the diffraction data in the butt weld region is assessed during the neutron diffraction measurements.

Texture Gradient in ECAP Silver Measured by Synchrotron Radiation

2005 ◽  
Vol 495-497 ◽  
pp. 821-826 ◽  
Author(s):  
Werner Skrotzki ◽  
N. Scheerbaum ◽  
C.G. Oertel ◽  
Heinz Günter Brokmeier ◽  
Satyam Suwas ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Neutron Diffraction ◽  
Room Temperature ◽  
Extrusion Direction ◽  
High Energy ◽  
Texture Gradient ◽  
Fcc Metals ◽  
Local Texture ◽  
Angular Pressing ◽  
Global And Local

Silver of 3N purity was deformed at room temperature by equal channel angular pressing (ECAP) using three passes of route A. The global and local texture were investigated by neutron diffraction and high-energy synchrotron radiation, respectively. The texture is characterized by typical simple shear components of fcc metals which differently deviate from their ideal positions. Local texture measurements reveal that the intensity and inclination of the texture components with respect to the extrusion direction depend on the distance from the top of the extruded bar and change from pass to pass. Reasons for the texture gradient are discussed. The texture of silver is compared with that of copper having a higher stacking fault energy.

Structural Properties of Ni-Co Electroplated Coatings Studied by X-Ray Micro-Beam

2014 ◽  
Vol 635 ◽  
pp. 204-207 ◽  
Author(s):  
Ondrej Milkovič ◽  
Mária Hagarová ◽  
Jana Michaliková ◽  
Matúš Horváth
Keyword(s):  
Synchrotron Radiation ◽  
Structural Properties ◽  
Current Density ◽  
Deposition Process ◽  
Transmission Mode ◽  
Structure Parameters ◽  
Electrodeposition Process ◽  
Cu Substrate ◽  
X Ray ◽  
Current Densities

In this article we focused to influence of current density on the structure parameters evaluated by microdiffraction experiment in transmission mode using synchrotron radiation. For this purpose the coatings of Ni-Co alloy were deposited on the Cu substrate using different current densities during the electrodeposition process. The results of the microdiffraction experiment showed the structure uniformity of the coatings along their thickness, as well as changes in the structure parameters depending on the used current density during the deposition process.

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