Kinetics of Formation of Martensitic Crystals in Iron-Based Alloys
S. V. Bobyr
Z. I. Nekrasov Iron and Steel Institute, NAS of Ukraine, 1 Academician Starodubov Sqr., 49050 Dnipro, Ukraine
Received: 20.05.2019; final version - 18.09.2020. Download: PDF
From energy considerations, the critical parameters of martensitic crystals and kinetic equations for their growth rate are found. As revealed, the growth rate of martensite crystal thickness depends on the stresses acting in austenite and decreases exponentially with time. It is theoretically substantiated that for the formation of martensite crystals a certain level of the difference between the free energies of the phases and the stresses in austenite are necessary.
Key words: non-equilibrium thermodynamics, martensitic transformation, equations of motion, iron-based alloys, austenite.
PACS: 05.70.Ln, 64.60.Bd, 64.70.kd, 64.75.Op, 66.30.Fq, 81.10.Jt, 81.30.Kf
Citation: S. V. Bobyr, Kinetics of Formation of Martensitic Crystals in Iron-Based Alloys, Metallofiz. Noveishie Tekhnol., 42, No. 11: 1573—1582 (2020)