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Recovery, recrystallization and grain growth in 0.03 C, 1.8 Si, 0.3 Al steels with and without addition of 0.05% of antimony
Author(s) -
Vodopivec Franc,
Jenko Monica,
SteinerPetrovic Darja,
Breskvar Bojan,
Marinšek Filip
Publication year - 1997
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199700546
Subject(s) - antimony , recrystallization (geology) , metallurgy , materials science , grain growth , annealing (glass) , grain boundary , grain size , microstructure , paleontology , biology
The investigation was carried out on two laboratory steels elaborated from identical base materials, one with 0.05% Sb and an industrial steel as‐delivered and after decarburisation. Cold rolled 0.5 mm sheets were prepared by laboratory rolling and investigated after annealing in temperature range 550 to 800°C for 0.5 to 60 m. Antimony has no effect on recovery in temperature range 550 to 625°C. Rare recrystallization nuclei were found at grain boundaries only in the decarburized steel, in all other steels nucleii appeared and grew only inside of deformed grains. At recrystallization finished grains were coarser in antimony and decarburized steels. The explanation is that less numerous nuclei grew for a longer time in the deformed matrix. The size of recrystallized grains was proportional to the square root of the annealing time. Recrystallized grain growth was faster in antimony‐free laboratory and in decarburized industrial steels, while the growth activation energy is very similar in antimony and decarburized steels. The growth activation energy was greater in antimony‐free laboratory and in as‐delivered industrial steels. It was similar to the activation energy of part of the recovery and near to the activation energy of iron self‐diffusion in ferrite. No difference was found in grain growth topology between the antimony and the comparative laboratory steels. Results indicate a similar effect of the presence of 0.05% of antimony and the decreased carbon content in steel.