OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 24 No. 1 2022 then decreases (Figure 2). This may indicate that phase transformations proceed in the sequence γ→ε→α. It is also characteristic that an increase in the rate by a factor of 103 reduces the degree of decomposition of the γ-solid solution. Martensitic transformations of the γ-solid solution at –196 °C and the same rates occur similarly as at –100 °C, except that the joint appearance of ε- and α-martensite is observed (Figure 3). Fig. 2. Dependence of martensitic transformations in steel 10Cr14NMn20 on the strain rate at a test temperature of –100 °C Fig. 3. Dependence of martensitic transformations in steel 10Cr14NMn20 on the strain rate at a test temperature of –196 °C
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