ОТРИМАННЯ ВИСОКОГО РІВНЮ МЕХАНІЧНИХ ВЛАСТИВОСТЕЙ В ТОНКОСТІННИХ ТРУБАХ І ПРОФІЛЯХ З ВИСОКОМІЦНИХ СТАЛЕЙ
DOI:
https://doi.org/10.34185/1991-7848.itmm.2022.01.015Ключові слова:
DP sttels, in-line heat treatment, mechanical properties, microstructureАнотація
To produce thin-walled tubular products and profiles with high level of mechanical properties, it is advisable to use two-phase (DP) steel, which has a ferritic-martensitic microstructure. The main technological element in the production of such products, which provides a combination of high strength and ductility is a special heat treatment in the temperature range from A1 to A3. This heat treatment provides a microstructure consisting of a soft ferrite matrix containing martensite inclusions located at the grain boundaries. Tubular products and profiles made of high-strength steels are obtained in continuous units, in which the areas of heating, deformation and cooling are separated. In this case a water-air sprayer must be integrated into the mill line for controlled cooling of the outgoing product. In the case where the deformation process takes place at temperatures below A1, it is rational to carry out the heat treatment directly in the line with heating by means of a through-inductor followed by cooling.
Посилання
Eisenwerkstoffe - Stahl und Gusseisen. – Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. ISBN 978-3-540-79955-9. https://doi.org/10.1007/978-3-540-79957-3
Design of heat treatment processes for a tailored set of properties on 22mnb5 steel alloy sheets simulation and experiments / E. Meza-Garcia, A. Mosel, Y. Shchus [and others]: Hot sheet metal forming of high-performance steel, CHS2: 4th international conference. Verlag Wissenschaftliche Scripten. – C. 337–344.
http://publica.fraunhofer.de/documents/N%2D246827.html
Influence of Tooling Material and Temperature on the Final Properties of Tailor Tempered Boron Steels / L. Galdos, E. Sáenz de Argandoña, N. Herrero [and others] // Key Engineering Materials. – 2014. – Т.611-612. – C. 1102–1109.
https://doi.org/10.4028/www.scientific.net/KEM.611-612.1102
Experimental and Numerical Analyses of Hot Stamped Parts with Tailored Properties / J. W. Choi, H. H. Bok, F. Barlat [and others] // ISIJ International. – 2013. – Т.53, №6. – C. 1047–1056. – https://doi.org/10.2355/isijinternational.53.1047
Numerical and experimental investigations of the anisotropic transformation strains during martensitic transformation in a low alloy Cr-Mo steel 42CrMo4 / B.A. Behrens,
A. Bouguecha, C. Bonk, A. Chugreev // Procedia Engineering. – 2017. – Т.207. –
C. 1815–1820. – https://doi.org/10.1016/j.proeng.2017.10.944
Press Hardening Of Tubes With Additional Interior Spray Cooling / B.A. Behrens,
H. J. Maier, A. Neumann [et al.]. // International Journal of Mechanical and Mechatronics Engineering – 2015. – C. 957–963. – https://doi.org/10.5281/zenodo.1106243
1-Step “Quenching and Partitioning” of the Press-Hardening Steel 22MnB5 / L. O. Wolf,
F. Nürnberger, D. Rodman, H. J. Maier // Steel Research International. – 2017. – Т.88, №6. – C. 1600307. – https://doi.org/10.1002/srin.201600307
