caa a22 4500 467981116 CHVBK 20180323112519.0 cr unu---uuuuu 170328e19900601xx s 000 0 eng 10.1007/BF01100159 doi (NATIONALLICENCE)springer-10.1007/BF01100159 Structural strength and plasticity of metastable austentic steels [Elektronische Daten] [A. Uvarov, N. Tereshchenko] Conclusions: 1. In hardened austenitic Kh12N19T3 steel exposed to tension at temperatures ttest=20 and −196°C, the stress concentration produced by annular notches of various depth causes a reduction in relative elongation. The course of martensite γ → α-transformation during the process of specimen stretching at ttest=−196°C helps to obtain a higher level of plasticity than at a temperature ttest=20°C, at which Kh12N18T3 steel has a structure of stable austenite. 2. In hardened austenitic 10Kh18AG21 and 55Kh4G18F steels on iron-manganese base after tension at 20 and 300°C the stress concentration produced by annular notches of various depth causes a reduction of relative elongation. The course of martensite γ → DD → ε- transformation at ttest=20°C does not lead to an increase of their plasticity as compared with the plasticity of specimens tested at ttest=300°C which have the structure of stable austenite. The more packets DD+ε are formed during stretching the smaller is the relative elongation. 3. Viscous failure in iron-nickel 10Kh12AG21 steel is observed at ttest≥−196°C, while in iron manganese 10Kh12AG21 and 55Kh5G18F steels it is observed at ttest≥20°C. In the case of viscous fracture the values of coefficients $${\text{K}}_{\text{1}} ^{\text{T}} \sigma _{\text{u}} ^{{\text{nt}}} /\sigma _{{\text{0}}{\text{.2}}}$$ and $${\text{K}}_{\text{2}} ^{\text{T}} = \sigma _{\text{T}} ^{{\text{nt}}} /\sigma _{{\text{0}}{\text{.2}}}$$ is higher in hardened iron-nickel steel than in iron-manganese steels. Plenum Publishing Corporation, 1990 Uvarov A. aut Tereshchenko N. aut Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/6(1990-06-01), 418-422 0026-0673 32:6<418 1990 32 11041 https://doi.org/10.1007/BF01100159 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01100159 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Uvarov A. aut NATIONALLICENCE 700 1- Tereshchenko N. aut NATIONALLICENCE 773 0- Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/6(1990-06-01), 418-422 0026-0673 32:6<418 1990 32 11041 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer