ISSN:
1573-9325
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Maschinenbau
Notizen:
Conclusions 1. For metastable austenitic steel, plastically deformed at −160°C under conditions of linear and plane stress states, we obtained an analytical expression for stress-strain curves describing the strain hardening of the austenite and the resistance of the developed martensite to deformation. It was shown that, due to the effect of the type of stress state on the structure of the steel, the hypothesis of a single stress-strain curve for the investigated ratios of principal stresses is not satisfied. 2. In biaxial tension, in contrast to uniaxial tension, dislocation density in the austenite increases and the development of martensite transformation is inhibited, resulting in a change in the numerical values of the stress-strain diagram parameters and a reduction in the ductility of the steel. 3. The established dependences of the stress-strain diagram parameters on the type of stress state, taking into account the decisive structural characteristics of the steel, may be used to calculate flow stresses in biaxial tension from data obtained in mechanical and structural studies of the steel in uniaxial tension.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01523702
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