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Fractal dimension as a characteristic of deformation stages of austenite stainless steel under tensile load

: Kuznetsov, P.V.; Panin, V.E.; Schreiber, J.


Theoretical and applied fracture mechanics 35 (2001), Nr.2, S.171-177
ISSN: 0167-8442
Fraunhofer IZFP ()
stainless steel

A technique for defining the fractal dimension of the deformed specimen is considered by using surface relief images obtained from a scanning electron microscope. By subjecting the austenitic stainless steel specimen to a step-wise increase in load, the fractal dimension is observed. Surface mesostructure could be characterized by discrete fractal dimension. The spectrum of the fractal data agrees with the self-affinity function calculated from the universal material constant. A correlation is established between the step-wise increase in the fractal dimension and the specific energies dissipated in the deformed specimen.