Abstract
Strain hardening features for steels of the austenitic, martensitic, and maraging classes in stable and metastable states in relation to structural parameters in complex biaxial loading conditions have been studied, including prior and repeated (with intermediate unloading) deformation with different principal stress ratios. The structural sensitivity of the Bauschinger effect is studied, structural dependences for yield stress with compression after prior tension are obtained, and generalization of the yield stress under repeated biaxial loading is substantiated by experiment. In the relationships presented there is quantitative consideration of the regularities revealed for the change in structural parameters of deformed metal during repeated loading in relation to the principal stress ratio. Classification of the test steels is suggested according to structural state characteristics caused by preferred isotropic and anisotropic strain hardening.
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