Affiliations: [a] Institut für Werkstoffkunde -IW- (Institute of
Material Science); Bereich Zerstõrungsfreie Prũfverfahren -ZfP- (Division
of Nondestructive Testing -NDT-); Appelstr. 9b, 30167 Hannover, University of
Hannover, Germany | [b] Status Emeritus, Department of Mechanical Engineering,
University of Hannover, Germany
Abstract: A wide range of pressurized systems in the field of chemical and
power-plant techniques are made of austenitic material because of its special
corrosion and temperature stability. Concerning safety components like pressure
vessels and pipe systems, the quality of these components has to be controlled
during production, and their condition during use has to be inspected in
defined intervals. Especially for nuclear power plants, the detection of
defects as well as the early recognition of material phase transformations in
austenitic material is an important contribution to the assurance of the system
integrity. Inside this paper, the results of the qualitative and quantitative
non-destructive evaluation of this phenomenon will be presented. Therefore,
material physics, FEM-calculations and applied advanced electromagnetic testing
techniques will be explained.
