whereχis the angle between OS and OT. Usually this formula is written more simply as (7.4)σ=Pcosϕcosλ/A whereλis the angle between the slip direction OT and the axis of tension. It can be seen that the resolved shear stress has a maximum value when the slip plane is inclined ...
Except for γ′ NIM -single crystals with the [011]-orientation, the formula describes the anisotropy and ( t / c )-asymmetry of the critical resolved shear stress satisfactorily.doi:10.1016/S0966-9795(99)00060-6Eckhard NembachAstrid Nitz...
Angle-resolved polarized Raman spectroscopy made it possible to analyze the anisotropy of crystals, such as c-Si, which is closely related to the crystal orientation, polari- zation, and stress state. Qiu [21] rebuilt the Raman-me- chanical theory by regarding the influence of shear stress ...
The given formula, however, is only valid for an ideal calibration and measurement, without any error. By also including candidates within a specific distance to the epipolar line, the errors can be accounted for. The distance threshold should be chosen within the order of the mean calibration ...
The formula of Peach and Koehler for the total force acting on a dislocation in a stressed crystal is derived by the use of a theorem due to Colonnetti. The same method distinguishes conservative motions of the dislocation, which do not alter the volume, from other motions. The component ...
In order to quantitatively discuss the trends, we fitted the first peaks of Ni, CoNi, CrCoNi, FeCoNi, MnFeCoNi, CrFeCoNi, and CrMnFeCoNi at different temperatures using the Einstein formula [46],(2)σ2(T)=(h/2π)22μkBθEcoth(θE2T)+σstatic2where h is the Plank constant, μ is ...
The theoretical calculation methods regarding resolved shear stress and shear strain of nickel-based single crystals are listed in the theoretical formulae section. Eight kinds of nickel-based single crystal fatigue life prediction models are listed in the next section, and the viewpoint that maximum...
Under grain load, shear stress on grain contact surfaces overcomes friction between grains, leading to mutual slip and displacement along the contact surfaces, resulting in different forms of particle distribution [11]. Due to the differences in size, shape, density, and surface roughness between ...