Characterization of the microstructure in random and textured polycrystals and single crystals by diffraction line profile analysis

Characterization of dislocations in germanium layers grown on (011)- and (111)-oriented silicon by coplanar and noncoplanar X-ray diffraction

“…It was shown that from a set of peaks measured for a number of reflections one can get reliable information about the dislocation type (Kaganer et al, 2006b). The underlaying idea is closely connected to the method of full-profile analysis in powder diffractometry: given a set of profiles for different reflections hkl, the fitting of the whole set enables the determination of the defect parameters (Ribarik & Ungar, 2010;Scardi & Leoni, 2002). The reason is that different defect types produce peak broadening that changes in a different way with hkl and, consequently, that enables one to disentangle the contribution from a distinct defect type.…”

Work Hardening, Dislocation Structure, and Load Partitioning in Lath Martensite Determined by In Situ Neutron Diffraction Line Profile Analysis

“…In the present work, which is the second part of [17], the evolution of lattice strains 21 and dislocation properties during tensile deformation will be presented and discussed in tensile deformation in the two lath packet types will be discussed in relation to the work 27 hardening. The work-hardening mechanism of the lath martensite will be discussed by 28 correlating the dislocation structure with the flow stress in the Taylor equation.…”

Neutron diffraction analysis of Cr–Ni–Mo–Ti austenitic steel after cold plastic deformation and fast neutrons irradiation

“…(5) it is obvious that we should know the value of Wilkens parameter (M) for the dislocation density calculation [28]. In the deformed materials, this parameter varies in the interval from M = 1 to M = 2 for the dislocation densities from 1 Á 10 10 s m À2 to 1.5 Á 10 11 s m À2 [29,30]. That is why in further calculations we take M = 1.5 for all samples, and C = 0.30 from (5).…”