Mechanical properties of ferrite-perlite and martensitic Fe–Mn–V–Ti–C steel processed by equal-channel angular pressing and high-temeperature annealing

• Published in: Russian physics journal Vol. 54; no. 4; pp. 416 - 422
• Main Authors: Zakharova, G. G., Astafurova, E. G., Tukeeva, M. S., Naidenkin, E. V., Raab, G. I., Dobatkin, S. V.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-09-2011; Springer
• Subjects: Analysis; Carbon steel; Condensed Matter Physics; Condensed-State Physics; Hadrons; Heavy Ions; Iron compounds; Lasers; Mathematical and Computational Physics; Mechanical properties; Nuclear Physics; Optical Devices; Optics; Photonics; Physics; Physics and Astronomy; Theoretical; equal-channel angular pressing; ferrite; low-carbon steel; perlite; martensite
• ISSN: 1064-8887; 1573-9228
• DOI: 10.1007/s11182-011-9633-0

Using the method of equal-channel angular pressing (ECAP), submicrocrystalline structure is formed in lowcarbon Fe–Mn–V–Ti–C steel with the average grain size 260 nm in the ferrite-perlite state and 310 nm in the martensitic state. It is established that the ECAP treatment gives rise to improved mechanical properties (H
μ
= 2.9 GPa, σ
0
= 990 MPa in the ferrite-perlite and H
μ
= 3.7 GPa, σ
0
= 1125 MPa in martensitic states), decreased plasticity, and results in plastic flow localization under tensile loading. The high strength properties formed by the ECAP are shown to sustain up to the annealing temperature 500°C.