scholarly journals Dislocation density and Burgers vector population in fiber-textured Ni thin films determined by high-resolution X-ray line profile analysis

2012 ◽  
Vol 45 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Gábor Csiszár ◽  
Karen Pantleon ◽  
Hossein Alimadadi ◽  
Gábor Ribárik ◽  
Tamás Ungár
Keyword(s):  
Thin Films ◽  
High Resolution ◽  
Dislocation Density ◽  
Line Profile ◽  
Profile Analysis ◽  
Domain Size ◽  
Line Profile Analysis ◽  
Burgers Vector ◽  
X Ray ◽  
Vector Population

Nanocrystalline Ni thin films have been produced by direct current electrodeposition with different additives and current density in order to obtain 〈100〉, 〈111〉 and 〈211〉 major fiber textures. The dislocation density, the Burgers vector population and the coherently scattering domain size distribution are determined by high-resolution X-ray diffraction line profile analysis. The substructure parameters are correlated with the strength of the films by using the combined Taylor and Hall–Petch relations. The convolutional multiple whole profile method is used to obtain the substructure parameters in the different coexisting texture components. A strong variation of the dislocation density is observed as a function of the deposition conditions.

Dislocation Densities, Slip-System Types and Burgers Vector Populationsinhexagonal and Cubiccrystalsfrom X-Ray Line Profile Analysis

2011 ◽  
Vol 702-703 ◽  
pp. 479-484
Author(s):  
Tamás Ungár
Keyword(s):  
Line Profile ◽  
Profile Analysis ◽  
Polycrystalline Materials ◽  
Line Profile Analysis ◽  
X Ray Diffraction ◽  
Burgers Vector ◽  
X Ray ◽  
Diffraction Line Profile ◽  
Vector Population ◽  
Dislocation Densities

X-ray diffraction line profile analysis can be carried out on the hkl planes corresponding to the same texture component or the same crystallographic orientation fiber. It is shown that in textured polycrystalline materials or in thin films or multilayers X-ray line profiles measured on planes corresponding either to the main or the minor texture components can provide the Burgers vector population and dislocations densities in the different texture components separately. The experimental technique is outlined for textured specimens and the multiple convolutional whole profile method, i.e. the CMWP line profile analysis procedure, is presented for its capacity to determine the substructure pertaining to different texture components in textured samples.

Distributions of Domain Size, Lattice Distortion and Dislocation Density in Tubes of Zr-Based Alloys Studied by a Method Combining X-Ray Line Profile Analysis with Texture Measurements

2004 ◽  
Vol 443-444 ◽  
pp. 255-258 ◽  
Author(s):  
Yuriy Perlovich ◽  
Margarita Isaenkova
Keyword(s):  
Dislocation Density ◽  
Lattice Distortion ◽  
Profile Analysis ◽  
Domain Size ◽  
Line Profile Analysis ◽  
Ray Method ◽  
Texture Measurement ◽  
X Ray ◽  
Pole Figures ◽  
Line Analysis

The distributions of substructure parameters for tubes of Zr-based alloys were constructed by use of the X-ray method of Generalized Pole Figures, combining X-ray line analysis and texture measurement. Obtained distributions cover α-Zr crystallites of all orientations and give the fullest description of substructure features of the studied tubes. The interconnection of different substructure parameters are analyzed.

INVESTIGATION OF SURFACE GRADIENT MICROSTRUCTURE OF SHOT PEENED S30432 STEEL BY X-RAY LINE PROFILE ANALYSIS METHOD

2016 ◽  
Vol 24 (06) ◽  
pp. 1750078 ◽  
Author(s):  
K. ZHAN ◽  
W. Q. FANG ◽  
B. ZHAO ◽  
Y. YAN ◽  
Q. FENG ◽  
...  
Keyword(s):  
Line Profile ◽  
Shot Peening ◽  
Profile Analysis ◽  
Rietveld Method ◽  
Size Variation ◽  
Domain Size ◽  
Line Profile Analysis ◽  
Analysis Method ◽  
X Ray ◽  
Gradient Microstructure

S30432 steels were processed by multistep shot peening treatment. The refined microstructures, including domain size, microstrain, domain size distribution and texture were characterized by X-ray diffraction (XRD) line profile analysis method, respectively. The results demonstrate that in the deformed layers, a gradient structure is formed after shot peening. The domain size reaches 25[Formula: see text]nm at the surface, then it decreases as the depth increases, but microstrain (0.0027) is the largest at the surface. The domain size distributions at different depths calculated by Rietveld method are consistent with domain size variation along the depth. There are no strong textures after shot peening treatment. The change of microhardness along the depth is in accordance with the gradient microstructure. It is expected that this work can offer useful information for characterizing the microstructure of shot peened materials.

scholarly journals In situ synchrotron X-ray diffraction line-profile analysis of additively manufactured Ti−6Al−4V alloy under tensile deformation

2020 ◽  
Vol 321 ◽  
pp. 03026
Author(s):  
K. Yamanaka ◽  
A. Kuroda ◽  
M. Ito ◽  
M. Mori ◽  
T. Shobu ◽  
...  
Keyword(s):  
Dislocation Density ◽  
Line Profile ◽  
Tensile Deformation ◽  
Profile Analysis ◽  
High Energy ◽  
Line Profile Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Β Phase

In this study, the tensile deformation behavior of an electron beam melted Ti−6Al−4V alloy was examined by in situ X-ray diffraction (XRD) line-profile analysis. The as-built Ti−6Al−4V alloy specimen showed a fine acicular microstructure that was produced through the decomposition of the α′-martensite during the post-melt exposure to high temperatures. Using high-energy synchrotron radiation, XRD line-profile analysis was successfully applied for examining the evolution of dislocation structures not only in the α-matrix but also in the nanosized, low-fraction β-phase precipitates located at the interfaces between the α-laths. The results indicated that the dislocation density was initially higher in the β-phase and an increased dislocation density with increasing applied tensile strain was quantitatively captured in each constitutive phase. It can be thus concluded that the EBM Ti−6Al−4V alloy undergoes a cooperative plastic deformation between the constituent phases in the duplex microstructure. These results also suggested that XRD line-profile analysis combined with highenergy synchrotron XRD measurements can be utilized as a powerful tool for characterizing duplex microstructures in titanium alloys.

Microstructure of polycrystalline gold nanoparticles and thin-films from a comparative X-ray line profile analysis

2021 ◽  
Vol 258 ◽  
pp. 123976
Author(s):  
Ana C. Murrieta ◽  
Danyel Cavazos-Cavazos ◽  
Pamela Santos-Aguilar ◽  
Jorge L. Cholula-Díaz ◽  
Flavio F. Contreras-Torres
Keyword(s):  
Thin Films ◽  
Gold Nanoparticles ◽  
Line Profile ◽  
Profile Analysis ◽  
Line Profile Analysis ◽  
X Ray ◽  
Polycrystalline Gold

Characterization of aging behavior of precipitates and dislocations in copper-based alloys

2010 ◽  
Vol 25 (2) ◽  
pp. 104-107
Author(s):  
Shigeo Sato ◽  
Yohei Takahashi ◽  
Kazuaki Wagatsuma ◽  
Shigeru Suzuki
Keyword(s):  
Dislocation Density ◽  
Aging Time ◽  
Line Profile ◽  
Small Angle ◽  
Profile Analysis ◽  
Aging Treatment ◽  
Scattering Method ◽  
Line Profile Analysis ◽  
X Ray ◽  
X Ray Scattering

The growth of precipitates in a deformed Cu–Ni–Si alloy with an aging treatment and the rearrangement of dislocations were investigated using small-angle X-ray scattering method and XRD line-profile analysis. The small-angle X-ray scattering method was used for characterizing the growth behavior of the precipitates. The results showed that the precipitates grew gradually to a few nanometers in radius when aged under the condition that the alloy exhibited a maximum of the hardness due to precipitation hardening. The growth rate rose from the onset of the overaging, where the hardness started to decrease. The line-profile analysis of copper-based alloy diffraction peaks using modified Williamson–Hall and modified Warren–Averbach procedures yielded a variation in the dislocation densities of the alloy as a function of the aging time. The dislocation density of the alloy before the aging treatment was estimated to be 1.7×1015 m−2 and its high value was held up to the peak-aging time. With the onset of the overaging, however, the dislocation density distinctly decreased by about 1 order of magnitude indicating that a large amount of the dislocations rearranged to release the alloy from the high dislocation-density state. The results suggest that the massive rearrangement of dislocations was accompanied with coarsening of the precipitates.

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