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Combined effect of deformation and diffusion hold applied close to A1 temperature on carbide distribution in RSt37-2 steel

Citace: KUČEROVÁ, L., JIRKOVÁ, H., JANDOVÁ, D., MAŠEK, B. Combined effect of deformation and diffusion hold applied close to A1 temperature on carbide distribution in RSt37-2 steel. In Annals of DAAAM for 2011 & Proceedings of the 22nd international DAAAM symposium. Vienna: DAAAM International Vienna 2011, 2011. s. 517-518. ISBN: 978-3-901509-83-4 , ISSN: 1726-9679
Druh: STAŤ VE SBORNÍKU
Jazyk publikace: eng
Anglický název: Combined effect of deformation and diffusion hold applied close to A1 temperature on carbide distribution in RSt37-2 steel
Rok vydání: 2011
Místo konání: Vienna
Název zdroje: DAAAM International Vienna 2011
Autoři: Doc. Ing. Ludmila Kučerová Ph.D. , Dr. Ing. Hana Jirková , Doc. RNDr. Dagmar Jandová Ph.D. , Prof. Dr. Ing. Bohuslav Mašek
Abstrakt CZ: The formability of cold formed steel is conventionally improved by soft annealing which ensure spheroidization of carbides in final microstructure. Soft annealing is however a long and energy consuming process and therefore this article deals with the attempt to replace it by thermo-mechanical processing which combined hot deformation applied around A1 temperature with controlled heat treatment. Several strategies either with two deformation steps or with intensive incremental deformation were proposed with deformation temperatures of 700°C and 740°C and various subsequent holds at deformation temperature. The best results were obtained by the strategy with two deformation steps at 740°C (total ?=2.1) followed by 300s hold, which resulted in carbide spheroidization.
Abstrakt EN: The formability of cold formed steel is conventionally improved by soft annealing which ensure spheroidization of carbides in final microstructure. Soft annealing is however a long and energy consuming process and therefore this article deals with the attempt to replace it by thermo-mechanical processing which combined hot deformation applied around A1 temperature with controlled heat treatment. Several strategies either with two deformation steps or with intensive incremental deformation were proposed with deformation temperatures of 700°C and 740°C and various subsequent holds at deformation temperature. The best results were obtained by the strategy with two deformation steps at 740°C (total ?=2.1) followed by 300s hold, which resulted in carbide spheroidization.
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