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- Title
Fine microstructure of wire rods manufactured from Sv-08G2S high-plasticity steel.
- Authors
Nesterenko, A. M.; Sychkov, A. B.; Zhukova, S. Yu.; Sukhomlin, V. I.
- Abstract
This paper presents the results of transmission-electron-microscope and scanning-electron-microscope studies of the fine structure of wire rod made from Sv-08G2S silicon-manganese welding steel, including electron microscope images used to identify the structural components of the wire-rod metal and determine the dislocation density. The wire-rod microstructure was compared against that obtained when a new, optimized process was developed for heat-treatment of the wire rod in a Stelmor line. We show that the wire rod has the highest ductility when the production flow includes long-term holding of the wire-rod coils under quasi-isothermal conditions (under insulated hoods with a cooling rate 0.2–0.3°C/sec) in such a way as to minimize the number of bainite-martensite areas when the structureless martensite (hardenite) content does not exceed 5%. The resulting process and optimized microstructure enabled us to achieve a relative deformation of 98% when direct-drawing wire rod from Sv-08G2S alloy steel.
- Subjects
TRANSMISSION electron microscopes; SCANNING electron microscopes; WELDING; METALWORK; WIRE; STEEL; MICROSTRUCTURE; WIRE industry
- Publication
Metallurgist, 2008, Vol 52, Issue 9/10, p511
- ISSN
0026-0894
- Publication type
Article
- DOI
10.1007/s11015-009-9087-6