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Determination of Microstructural Parameters by Magnetic and Ultrasonic Quantitative NDE

  • Werner A. Theiner
  • Herbert H. Willems

Abstract

Microstructure parameters like precipitations, grain boundaries, dislocations, grain size and atomic defects (impurities, vacancies) determine the mechanical properties of technical steels in well-known manner1 and, therefore, the estimation of these parameters is a general aim in the field of quality and production control as well as in the development of new steels. Nondestructive (nd) techniques, which are sensitive to “lattice imperfections” and macro-stresses, should cover the range from atomic up to macroscopic dimensions in the centimeter range. This problem can be solved by a combination of different and independent nd quantities as listed in Table 1 for ultrasonic and electromagnetic methods.

Keywords

Attenuation Coefficient Microstructural Parameter Ultrasonic Attenuation Bloch Wall Lattice Imperfection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1984

Authors and Affiliations

  • Werner A. Theiner
    • 1
  • Herbert H. Willems
    • 1
  1. 1.Fraunhofer-Institut für zerstörungsfreie PrüfverhafrenSaarbrückenGermany

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