In situ time resolved X‐ray diffraction using synchrotron

Abstract

A new technique based on a combination of time resolved X‐ray diffraction and laser scanning confocal microscopy was developed for direct observation of morphological evolution and simultaneous identification of phases during thermal cycle of welding. Time resolved X‐ray diffraction data and laser scanning confocal microscopy images under the desired thermal cycles were measured simultaneously. As an example, the microstructural evolution in 15Cr–5Ni martensitic steel was observed to investigate the phase transformation kinetics under the thermal cycle of rapid heating and cooling.