IntroductionDuring the last 3 years an extensive intra operative measurement protocol was used to objectively measure the function and interaction of the cochlear implant (CI) outcome measures of auditory nerve fibers (ECAP) and implant evoked electrically auditory brainstem responses (impEABR). The aim of this study is to find out if these measurements can be used as a predictor of speech and ...

The nucleation and subsequent development of the Portevin-Le Chatelier bands during tensile deformation in a binary AlMg alloy was investigated by digital image correlation technique. following states material were employed for current investigation: coarse-grained (CG), fine-grained (FG) after equal channel angular pressing (ECAP), severely strained (SS) ECAP followed cold rolling. Special att...

The generation of a high density twins few tens nanometers in size can enhance both strength and ductility. present work aims to produce highly twinned microstructure Cu-6wt% Zn alloy moderate stacking fault energy (SFE) by equal channel angular pressing (ECAP) using die with angles ϕ=110° Ψ=0. X ray diffraction (XRD) shows that defects is stored up 2 passes then recovery takes place. EBSD imag...

The relation between processing parameters (routes, passes) and mechanical behavior of equal channel angular pressing (ECAP) processed Mg alloys has been researched systematically by Hai-Long Jia, co-workers in this article, number 2000790. A low-cost high-strength-ductility wrought made combining fine DRXed grains, nano-scale secondary phase particles strong basal texture.

The TWIP steels show high strain hardening rates with high ductility which results in high ultimate tensile strength. This makes their processing by equal channel angular pressing very difficult. Up to now, this has only been achieved at warm temperatures (above 200 C). In this paper, a FeMnCAl TWIP steel has been processed at room temperature and the resulted microstructure and mechanical prop...

Commercially pure nickel was processed by equal channel angular pressing (ECAP) through route Bc for 12 passes to obtain an ultrafine grained (UFG) microstructure and further subjected to an ultrasonic treatment (UST) which introduced a maximum amplitude equivalent to anormal stresses of 100 MPa in a steady state regime. It was observed that the microstructure of UFG Ni can be differently alter...

Abstract The exact calculations of the stress and strain distributions based on controlling equations for a forming process with large deformation are often difficult. To circumvent such difficulties, some analytical methods upper-bound analysis slip-line field theory have been established by making number simplifying assumptions regarding material properties modes. In this work an model was su...