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Besonderheiten der Mikrostruktur von austenitischen Stählen nach der plastischen Umformung
Author(s) -
Gershteyn G.,
Shevchenko N.,
Diekamp M.,
Brosius A.,
Schaper M.,
Bach Fr.W.
Publication year - 2012
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201200853
Subject(s) - austenite , microstructure , materials science , metallurgy , plasticity , deformation (meteorology) , severe plastic deformation , composite material
The carried out transmission electron microscopic (TEM) analysis of steels 316L and TWIP, has shown that important mechanisms of plastic deformation are mechanical twinning, shear band formation and deformation martensitic transformations. Mechanical twinning is a characteristic feature of a plastic deformation at ε ≈ (20–50) % deformation degrees. At ε = (20–70) % the basic contribution in plastic deformation of a material brings shear band formation. The contribution deformation martensitic transformations into plastic deformation is defined by level of phase instability of steels.