The Structure Changes Inside Surface Layers of the Fe-Al-C-System Single Crystals Being Brought About by Exposure to the Laser Radiation, When Repeated Many Times and Melting off the Surface

摘要

The structure changes of surface layers of the Fe-Al-C-system monocrystalline samples have been investigated by the X-ray technique after five exposures of the (8 ms) pulse laser (10 J) radiation. The investigation of the martensite structure led to the conclusion that the austenite-structure changes, after exposure to the pulse laser radiation, extends for 4,5 mm from the surface of samples. This 4,5-mm surface layer consists of six austenite patches that are different in structure.