Einfluß der Temperatur auf die Versetzungsstruktur in der Umgebung von Mikrohärteeindrücken in Eiseneinkristallen

Abstract

The temperature dependence of microhardness on { 100) -surfaces of iron single crystals was determined in the temperature range between 200 K and 1180 K. The dislocation structure around the microindentations is investigated by transmission electron microscopy, optical microscopy and etching. The results suggest that the separate ranges of the microhardnesstemperature-dependence coincide with characteristic dislocation arrangements. Possible deformation processes are discussed.