Abstract
The structure and mechanical properties of steel 12Kh2G2NMFT after continuous cooling at a rate of 600 – 0.035 K/sec and after cooling with isothermal holds in a temperature range of 300 – 650°C are investigated. It is shown that a lath martensite structure with a high level of strength and ductility is formed in a wide range of cooling conditions. The decrease in the impact toughness observed under isothermal conditions in a narrow temperature range below M i (360 – 410°C) is shown to be connected with the processes of tempering of freshly formed isothermal martensite.
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Kamenskikh, A.P., Zayats, L.T., Kleiner, L.M. et al. Special Features of Formation of Structure and Properties of Low-Carbon Martensitic Steel 12Kh2G2NMFT. Metal Science and Heat Treatment 45, 88–90 (2003). https://doi.org/10.1023/A:1024507302729
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DOI: https://doi.org/10.1023/A:1024507302729