Electroplastic forming in a Fe-based metallic glass ribbon

In situ TEM Investigation of the Electroplasticity Phenomenon in Metals

“…This phenomenon has been studied since the 1950's [1] and researchers have proposed two possible origins of this nearly-universal effect: (1) localized Joule heating at lattice defects and (2) the electron wind effect leading to vacancy migration [2]. However, there is no clear evidence of the true origin of this behavior at the level of individual defects [3]. In this work, in situ Transmission Electron Microscope (TEM) electromechanical tests were performed in order to correlate direct observations of dislocation motion with both mechanical data and applied electrical pulses in an effort to provide clarity on the true origin of this interesting phenomenon.…”