In Situ observation of phase transformations in the Fe-Zn system

Abstract

In this study, the MAXIM technique was used in an attempt to clarify the phase transformation sequence that occurs during in situ annealing of galvanized samples. A diffractometer equipped with a novel imaging system comprising a Micro-Channel Plate in front of a CCD camera was used. The galvanized samples were produced under typical industrial conditions, with effective aluminum content at 0.147wt.%. In situ experiments were performed and the phase evolution was recorded in real time. It can be concluded that, coupled to in situ thermal treatment, MAXIM is an efficient method to observe the evolution of the phases present in galvannealed samples. This technique has enough sensitivity to detect the evolution of the involved phases with good spatial resolution

Analysis of Reactions in the Fe–Zn System through X-rays Diffraction Image Processing

“…In the in situ annealing experiment, 10) galvanized samples were subjected to a heat treatment in the diffractometer. As mentioned before, to follow the evolution of the chosen phases during in situ thermal treatment, it was necessary to measure their diffracting angles at the stable working temperature.…”