Effect of pulsed magnetic treatment on the corrosion of titanium

Abstract

This is an Accepted Manuscript of an article published by Taylor & Francis in Materials Science and Technology on 17 March 2017, available online: http://www.tandfonline.com/doi/full/10.1080/02670836.2017.1302141. Under embargo. Embargo end date: 17 March 2018.Results of corrosion tests of titanium in the initial state and after treatment using pulsed magnetic field are presented. It is shown that samples after treatment have better corrosion resistance due to the formation of denser and finer corrosion products with better adhesion to the substrate. Samples after treatment have more homogeneous microstructure due to a substantial increase of dislocations which are uniformly distributed. Mechanisms of dislocation multiplication and a model explaining the effect of the treatment on the corrosion are discussed

Effect of electropulsing on the fatigue resistance of aluminium alloy 2014-T6

“…A uniform pattern of dislocations similar to that presented in Figure 9 has also been observed for steel and titanium as a result of magnetic field treatment in earlier research [47,48]. Ma et al [49] reported an increase in the number of dislocations in steel as a result of magnetic treatment; this was attributed to a "magneto-stress" which acted on the dislocations and activated Frank-Read sources and dislocation slip increasing the dislocation density.…”

“…From these equations ( 4), the kinetic energy of the electron drift by the action of the electric field under an isotropic scattering of electrons can be derived [47] as…”

Effect of high‐density current electropulsing on corrosion cracking of titanium aluminide intermetallic

“…The electroplastic effect can be promoted by the electron wind force that can lead to dislocation motion. This effect of the electric pulse current on the crystal lattice of a metal can be estimated using the following basic relations that determine the kinetics of the interaction of conduction electrons with the crystal lattice in accordance with existing concepts of electrical conductivity [24,25] :…”

Manufacture of materials using external fields

“…This potential has been demonstrated also in alloy manufacture. Babutskyi et al presented the effect of magnetic pulses on Ti-alloys [15]. The evolution of structure and properties of pearlitic steels under long-term mechanical loading has been reported by Gromov et al [16].…”