2018
DOI: 10.15407/mfint.40.11.1437
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Nonequilibrium Thermodynamic Model of Diffusionless Transformation of an Austenite in Alloys on the Base of Iron

Abstract: Разработана неравновесная термодинамическая модель бездиффузионного превращения аустенита в железе и сплавах на его основе с учётом действующих в системе внутренних напряжений. Найдены уравнения движения Онзагера для модельной термодинамической системы, описывающей бездиффузионное превращение, и кинетические уравнения для изменения деформаций и скорости роста α-фазы. Построена схема бездиффузионных превращений аустенита, включающая нормальное и мартенситное превращения как предельные случаи.Ключевые слова: нер… Show more

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Cited by 5 publications
(4 citation statements)
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“…The system of equations (3) describes the contribution of stresses and strains to the diffusionless transformation of austenite. The solution to the system of equations (3) has the form [17]:…”
Section: Equations For Martensitic Transformationmentioning
confidence: 99%
See 3 more Smart Citations
“…The system of equations (3) describes the contribution of stresses and strains to the diffusionless transformation of austenite. The solution to the system of equations (3) has the form [17]:…”
Section: Equations For Martensitic Transformationmentioning
confidence: 99%
“…where v-velocity of microstrain propagation in the sample (∼1000 m/s) [2], L-the characteristic distance over which the shear microstrain extends (length of martensite laths or plates). At the initial stage of the formation of the shear structure, it has a value of the order of the austenite grain diameter (∼100 µm), and then decreases with decreasing temperature [1,17]. From expression (4), we can conclude that the growth rate of particles of the α-phase depends on the stresses in the γ-phase.…”
Section: Equations For Martensitic Transformationmentioning
confidence: 99%
See 2 more Smart Citations