Structural changes in corrosion-resistant steel 03Kh26N6T with initial anisotropy

• Published in: Metal science and heat treatment 1991-09, Vol.33 (9-10), p.677-683
• Main Authors: AKHMED FUAD, M. F, TSEPIN, M. A, LOBACH, A. A, SMIRNOV, O. M
• Format: Article
• Language: English
• Subjects: Applied sciences; Cold working, work hardening; annealing, quenching, tempering, recovery, and recrystallization; textures; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Metals. Metallurgy; Physics; Treatment of materials and its effects on microstructure and properties
• ISSN: 0026-0673; 1573-8973
• DOI: 10.1007/BF00811731

Previously abstracted from original as item 9209-56-1185. A mathematical model was developed for characterizing the anisotropy in 03Kh26N6T steel and its change with superplastic deformation. The statistical and phenomenological model makes it possible to determine the dependence of austenitic grain size and its rate of growth in three directions relative to the rolling direction on time and temperature of annealing. The activation energy for grain growth varied with direction within the range 341.71-446.71 kJ /mole. Analysis of the structural changes in the steel with initial metallographic anisotropy indicated that, during superplastic deformation of sheet samples of the steel, it is necessary to consider the structural changes in three directions due to the differences in rate of growth of the grains in the different directions. The activation energies measured for grain growth in three dimensions during annealing corresponded to the activation energy of diffusion of the basic alloying elements in the steel.