| Abstrakt: |
1.The stability of austenite in stainless steels, determining the rate of the ? ? a transformation at different deformation temperatures, can be determined fairly accurately by calculating the chromium equivalent of martensite formation CreqvM from the structural diagram [5].2.The ultimate strength of austenitic steels increases with decreasing deformation temperatures (even if the ? ? a transformation does not occur in the process of deformation), with increasing carbon concentrations (and, obviously, nitrogen), and with increasing rates of the ? ? a transformation, determined by the value of CreqvM and the deformation temperature.3.To obtain consistent mechanical properties of deformed stainless steels that undergo the ? ? a transformation in the process of deformation, it is necessary to use steels having values of CreqvM within narrow limits or select the degree of deformation for different heats in relation to the value of CreqvM. |
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