Regularities of bainitic steel deformation transition

[摘要] Quantitative analysis of defect and carbide subsystems evolution in medium-carbon bainitic steel subjected to compressive strain up to 36% was performed by means of transmission electron diffraction microscopy. Dislocation substructure and carbide phase parameters dependence on degree of deformation are identified, possible reasons of staging in their changes are discussed. It is suggested that the reason for bainitic steel softening at high (over 15%) degrees of deformation is activation of deformation microtwinning process.

[发布机构] Department of Physics N.a. Prof. V.M. Finkel, Siberian State Industrial University, 42 Kirova Street, Novokuznetsk; 654007, Russia^1;Vice-Rector for Assets Development, Siberian State Industrial University, 42 Kirova Street, Novokuznetsk; 654007, Russia^2;Institute of High Current Electronics, Siberian Brunch, Russian Academy of Sciences, 2/3 Akademichesky Ave, Tomsk; 634055, Russia^3

[效力级别] 金属学 [学科分类] 材料科学（综合）

[关键词] Bainitic steel;Carbide phase;Compressive strain;Degree of deformations;Dislocation substructures;Medium carbon bainitic steel;Microtwinning;Transmission electron diffraction microscopies