Modelling of deformation inhomogeneity in the angular accumulative drawing process—multiscale approach

Modelling of stamping of DP steel automotive part accounting for the effect of hard components in the microstructure

“…Results presented in the previous section describe the behaviour of the DP steel in the macro scale. Authors used two step connection between macro and micro scale [10]. The main idea of the multiscale methodology is shown in Figure 10.…”

Influence of strain reversal on dynamic transformation in microalloyed steels deformed above the Ae3 temperature

“…The austenite grain size was 65.1±3.7 µm in the original rolling direction, and 65.6±4.3 µm in the transverse direction (errors represent 95% confidence intervals). Solid bar torsion specimens of 20 mm gauge length and 10 mm diameter were then machined according to the geometry given elsewhere [20,24].…”

“…24 for the 2-pass deformation. As demonstrated by the FEM 3D-DMR modelling results shown in Figure 10, higher local strains were developed near the PAGBs at 0.9r compared to the effective radius of 0.724r, which in turn caused further serration and bulging of the PAGBs to facilitate the nucleation of DT ferrite.…”

Study of the Effects of Micro- and Nanolayered Structures on Mechanical Response of Microalloyed Steels

“…In order to model mechanical behavior of UFG materials, there is a need, first of all, to understand the deformation and strengthening mechanisms governing the plastic deformation of such material. To capture these phenomena in a sufficient way, multiscale modeling approach needs to be utilized, since the conventional material models are not amendable to bridge the gap arising from different scales at which those phenomena are taking place [22]. Thus, hierarchical material models involving different scales are required in order to predict some of the interactions between microscopic dislocation fields and macroscopic deformation fields computationally.…”