Dresden 2003 – wissenschaftliches Programm

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M: Metallphysik

M 12: Grenzfl
ächen II

M 12.1: Vortrag

Montag, 24. März 2003, 11:45–12:00, IFW D

Kinetic Properties of Grain Boundaries with 001 rotation axis — •Tamara Vugrin and Myrjam Winning — Institut fuer Metallkunde und Metallphysik, RWTH Aachen, Kopernikusstr. 14, 52056 Aachen

Results will be presented of investigations of the kinetic properties of grain boundaries with a (001) rotation axis. The experiments were carried out on planar tilt as well twist boundaries in a wide range of misorientation angles (3 degree to 40 degree). To activate the motion of the boundaries different mechanical stresses were used. The motion of the grain boundaries could be measured in-situ by using X-ray diffraction to locate the grain boundary position at any time. The aim of the experiments was to compare the motion of tilt and twist boundaries with the same rotation axis. Especially the transition from low angle to high angle grain boundaries and the migration mechanisms should be investigated. The activation parameters of the grain boundary motion was determined to identify the migration mechanisms.