Abstract The influence of anisotropic work-hardening on the component properties and process forces in cold forging is investigated. focus material behaviour exhibited after strain path reversals. three steels characterized for large monotonic strains (equivalent up to 1.7) subsequent reversals (accumulated 2.5). Tensile tests specimens extracted from rods forward extruded at room temperature r...

Abstract In this contribution, a model for the thermomechanically coupled behaviour of case hardening steel is introduced with application to 16MnCr5 (1.7131). The based on decomposition free energy into thermo-elastic and plastic part. Associated viscoplasticity, in terms temperature-depenent Perzyna-type power law, combination an isotropic von Mises yield function takes respect strain-rate de...

In this paper we describe and evaluate an image-based spectral CT method. Its central formula expresses measured CT data as a spectral integration of the spectral attenuation coefficient multiplied by a Local Weighting Function (LWF). The LWF represents the local energy weighting in the image domain, taking into account the system and reconstruction properties and the object self attenuation. A...

The digital image correlation (DIC) technique was utilized in conjunction with mechanical experiments carried out at different strain rates to study the negative strain rate sensitivity (NSRS) in face-centered cubic (fcc) Hadfield steels. The results shed light onto the variation of local strain fields and serrations in the stress– strain curves of Hadfield steels as a function of strain rate w...