...Kirichek Andrey Victorovich; Barinov Sergey Vladimirovich This article considers the influence of the size of processed workpieces during their strain hardening based on the impact of deformation waves on the processed surface. For the first time, the specificity of the hardened layer formation...

...M. G. Lee; C. Kim; E. J. Pavlina; F. Barlat Forming modern advanced high strength steels poses challenges that were not of real importance in the previous decades. These challenges are the result of the steels’ complex microstructures and hardening behaviors, and the problems directly related...

... showed that strong and complicated mass transport appears in the weld nugget and substantially changed the heat transport laws and, therefore, would be able to substantially affect the hardening, segregation, and residual stress of the weld. Compared with the traditional models which could not consider...

... plasticity-based machining (RSPM) model developed in Part I. The five material parameters, including four hardening parameters and the exponent of rate sensitivity, for both single-crystal aluminum and single-crystal copper are calibrated from the single-crystal plunge-turning data using a Kriging-based...

... element method (FEM) simulation. Finite element simulations, based on single crystal plasticity, were performed for the process both with and without considering the GND hardening, and the comparison has been conducted. Crystal lattice rotation by EBSD measurement Crystal lattice rotation...

... process. Several conventional constitutive models have often been used to approximate flow stress in machining analysis and simulations. The empirical or semiempirical conventional models lack mechanisms for incorporating isotropic/kinematic hardening, recovery, and loading history effects. In this study...

..., and the fracture process was controlled by the link of the voids. At low heating rates (10–100°C/min), the mean void size and volume fraction increase with heating rate and peak temperature, causing the weakening of the bonding strength. However, at very high heating rates (2000–6000°C/min), the rapid hardening...

...–Tvergaard’s yield function ( Tvergaard, V., 1981, Int. J. Fract., 17, pp. 389–407 ) and its associated flow rule for voided solids. The effects of hardening and evolution of void shape on void growth are considered. Various fracture criteria are employed to predict the process conditions at which central...

... applied to estimate mechanical properties of hardened AISI 52100 steel in hard machining. Tensile testing is shown capable of estimating the mechanical properties of both elastic and plastic regions with large strains at elevated temperatures. Flow stresses at high strain rates in machining can...

... = length of the punch. n = strain-hardening exponent. p c = counter pressure. p max = setting of the maximal pressure in the cavity. p c = calculated trial counter pressure. p c old = counter pressure at previous...