scholarly journals Lattice Strain Evolutions in Ni-W Alloys during a Tensile Test Combined with Synchrotron X-ray Diffraction

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4027
Author(s):  
Tarik Sadat ◽  
Damien Faurie ◽  
Dominique Thiaudière ◽  
Cristian Mocuta ◽  
David Tingaud ◽  
...  
Keyword(s):  
Solid Solution ◽  
Tensile Test ◽  
Single Phase ◽  
Lattice Strain ◽  
Tensile Tests ◽  
X Ray Diffraction ◽  
X Ray ◽  
Significant Difference ◽  
Diffraction Peaks

Ni and Ni(W) solid solution of bulk Ni and Ni-W alloys (Ni-10W, Ni-30W, and Ni-50W) (wt%) were mechanically compared through the evolution of their {111} X-ray diffraction peaks during in situ tensile tests on the DiffAbs beamline at the Synchrotron SOLEIL. A significant difference in terms of strain heterogeneities and lattice strain evolution occurred as the plastic activity increased. Such differences are attributed to the number of brittle W clusters and the hardening due to the solid solution compared to the single-phase bulk Ni sample.

High-pressure study of a nanostructured SnSe1−xSx (x = 0.5) solid solution by in-situ X-ray diffraction and ab-initio calculations

2019 ◽  
Vol 792 ◽  
pp. 536-542
Author(s):  
Larissa da Silva Marques ◽  
Joelma Maria de Oliveira Ferreira ◽  
Querem Hapuque Félix Rebelo ◽  
Angsula Ghosh ◽  
Daniela Menegon Trichês ◽  
...  
Keyword(s):  
Solid Solution ◽  
High Pressure ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Pressure Study

Solid solutions in the system Ag2S–Ag2Se

1992 ◽  
Vol 7 (8) ◽  
pp. 2219-2224 ◽  
Author(s):  
N.E. Pingitore ◽  
B.F. Ponce ◽  
M.P. Eastman ◽  
F. Moreno ◽  
C. Podpora
Keyword(s):  
Solid Solution ◽  
Solid Solutions ◽  
Type Structure ◽  
Solid Solution Series ◽  
X Ray Diffraction ◽  
Compositional Gradient ◽  
X Ray ◽  
Optical Electron ◽  
Discrete Phase ◽  
Diffraction Peaks

Optical, electron microprobe, and x-ray diffraction analysis of 88 samples of various compositions between Ag2S and Ag2Se synthesized at high temperature in sealed quartz tubing indicates the presence of two solid-solution series in this system at ambient (room) conditions. One series extends from Ag2S to approximately Ag2S0.4Se0.7 and has the Ag2S-III-type structure (monoclinic). The second series ranges from Ag2S0.3Se0.7 to Ag2Se and is characterized by the Ag2Se-II-type structure (orthorhombic). Members of both series, in appropriate proportions, characterize the apparent compositional gap between the two solid solutions. Gradual shifts in the locations of the x-ray diffraction peaks along the compositional gradient of each solid solution revealed an expansion of the d-spacing as the larger Se ion was substituted for S in the Ag2S-III-type structure and a contraction as S was substituted for Se in the Ag2Se-II-type structure. The reported discrete phase, Ag4SSe (aguilarite, orthorhombic), appears to be simply a member of the monoclinic Ag2S-III-type solid solution.

In Situ X-Ray Diffraction of an Arc Weld Showing the Phase Transformations of Ti and Fe as a Function of Position in the Weld Performed at a Synchrotron

1993 ◽  
Vol 37 ◽  
pp. 479-482 ◽  
Author(s):  
Joe Wong ◽  
J. W. Elmer ◽  
P. A. Waide ◽  
E. M. Larson
Keyword(s):  
Combustion Synthesis ◽  
Ferroelectric Material ◽  
Bragg Diffraction ◽  
Intermediate Species ◽  
X Ray Diffraction ◽  
Synchrotron Source ◽  
X Ray ◽  
Subsequent Phase ◽  
Diffraction Peaks

The synchrotron x-ray source provides a unique opportunity to observe many “in-situ” processes. The formation of the “short-lived” intermediate species, Ta2C, during the combustion synthesis of TaC, has been observed and reported by monitoring the Bragg diffraction peaks of the reactants and products, Similarly, the synthesis of the ferroelectric material, BaTiO3, and subsequent phase transfonnation from cubic to tetragonal have also been investigated. These experiments would not have been possible without the high incident x-ray flux available at a synchrotron source.

Compression and Compressibility Studies of Plutonium and a Plutonium-Gallium Alloy

1980 ◽  
Vol 24 ◽  
pp. 221-230 ◽  
Author(s):  
R. B. Roof
Keyword(s):  
Solid Solution ◽  
The Other ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Foils ◽  
Gallium Alloy

Two metal foils, one pure plutonium and the other being a solid solution of 6.5 a/o gallium In plutonium, were examined, in-situ, by X-ray diffraction techniques while under pressure. The purpose was to determine the compression and compressibility of these materials as a function of pressure and to identify the products of any transformation that may occur due to the action of applied pressures.

SYNTHESIS, CHARACTERIZATION, AND SELF-CONTROLLED ORTHORHOMBIC TO TETRAGONAL POLYMORPHIC TRANSFORMATION IN BaTiO3 NANOPARTICLES

2007 ◽  
Vol 21 (25) ◽  
pp. 1697-1714
Author(s):  
S. RAM ◽  
A. JANA ◽  
T. K. KUNDU
Keyword(s):  
Composite Structure ◽  
Single Phase ◽  
Average Crystallite Size ◽  
X Ray Diffraction ◽  
X Ray ◽  
Lattice Volume ◽  
Proposed Model ◽  
Diffraction Peaks ◽  
Two Phases ◽  
O Phase

The phase formation and thermal-induced phase transformation are studied in BaTiO 3 nanoparticles. 2 h of heating a polymer precursor at 550°C in air formed a single phase BaTiO 3 of 15 nm average crystallite size D. The X-ray diffraction peaks are analyzed assuming a P nma orthorhombic (o) crystal structure of lattice parameters a = 0.6435 nm , b = 0.5306 nm , and c = 0.8854 nm . The lattice volume V = 0.3023 nm 3, with z = 4 formula units, yields a density ρ = 5.124 g/cm 3. This is a new polymorph in comparison to well-known P m3m tetragonal (t) structure, V = 0.0644 nm 3 or ρ = 6.016 g/cm 3 (z = 1). An o ↦ t transformation appears on heating at temperature as high as 650°C in air. A proposed model explains the transformation above a certain D value in terms of the Gibbs free energy. Unless heating above 750°C, the two phases coexist in a composite structure (D≤27 nm ), with as much residual o-phase trace as ~28 vol%. As a function of temperature both the phases decrease in the V values up to 0.2975 and 0.0643 nm3 at 750°C respectively (0.0650 nm3 at 650°C). This is an important parameter for designing useful ferroelectric and other properties in a hybrid composite structure.

Micro-Tensile and Fatigue Testing of Copper Thin Films on Substrates

1998 ◽  
Vol 546 ◽  
Author(s):  
M. Hommel ◽  
O. Kraft ◽  
S. P. Baker ◽  
E. Arzt
Keyword(s):  
Elastic Strain ◽  
Fatigue Testing ◽  
Tensile Tests ◽  
Copper Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Tensile Tester ◽  
Elastic Strains ◽  
External Strain

AbstractA special micro-tensile tester was used to carry out tensile tests of thin copper films on substrates. The elastic strain in the film was measured in-situ using x-ray diffraction and the total strain with an external strain gage. From the elastic strains the stresses in the films were calculated and stress-strain curves were obtained. It was observed that the flow stress increases with decreasing film thickness. The method was also applied to investigate the mechanical behavior of films under cyclic loading.

Influence of Annealing Time on Microstructure of Ni-W Alloys

2013 ◽  
Vol 747-748 ◽  
pp. 613-618
Author(s):  
Qiao Zhang ◽  
Shu Hua Liang ◽  
Chen Zhang ◽  
Jun Tao Zou
Keyword(s):  
Electron Microscopy ◽  
Solid Solution ◽  
Grain Size ◽  
Grain Boundaries ◽  
Annealing Time ◽  
Single Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
Average Grain Size ◽  
Scanning Electron

The as-cast Ni-W alloys with 15wt%W, 25wt%W and 30wt%W were annealed in hydrogen at 1100. The effect of the annealing time on the microstructure of Ni-W alloys was studied, and the phase constituents and microstructure of annealed Ni-W alloys were characterized by the X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that no any phase changed for Ni-15%W, Ni-25%W and Ni-30%W alloys annealed for 60 min, 90 min and 150 min, which were still consisted of single-phase Ni (W) solid solution. However, microstructure had a significant change after annealing. With increase of annealing time, the microstructure of Ni-15%W alloy became more uniform after annealing for 90 min, and the average grain size was 95μm, whereas the grain size of Ni-15%W alloy increased significantly after annealing for 150 min. For Ni-25%W and Ni-30%W, there was no obvious change on the grain size with increase of annealing time, and the amount of oxides at grain boundaries gradually reduced. After annealing for 150 min, the impurities at grain boundaries almost disappeared. Subsequently, the annealing at 1100 for 150 min was beneficial for the desired microstructure of Ni-25%W and Ni-30%W alloys.

Structural Behaviour of Solid Solution in the SmAlO3−TbAlO3 System

2015 ◽  
Vol 230 ◽  
pp. 39-44 ◽  
Author(s):  
Natalja Ohon ◽  
Leonid Vasylechko ◽  
Yurii Prots ◽  
Marcus Schmidt ◽  
I.I. Syvorotka
Keyword(s):  
Thermal Analysis ◽  
Solid Solution ◽  
Continuous Solid Solution ◽  
Lattice Parameter ◽  
X Ray Diffraction ◽  
Structural Behaviour ◽  
X Ray ◽  
Synchrotron Powder Diffraction ◽  
Orthorhombic Perovskite

Phase and structural behaviour in the SmAlO3–TbAlO3system has been studied in a whole concentration range by means of laboratory X-ray diffraction,in situhigh temperature synchrotron powder diffraction and differential thermal analysis. Formation of the continuous solid solution Sm1−xTbxAlO3with the orthorhombic perovskite structure (space groupPbnm) has been established. Peculiarity of the investigated system is lattice parameter crossovers resulted in the existence of three regions with different relations of the lattice parameters. Based on the results obtained, as well as an available literature data for the “pure” SmAlO3and TbAlO3, a phase diagram of the pseudo-binary SmAlO3–TbAlO3system has been constructed.

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