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Neutron Scattering Study on Precipitation and Recrystallization Behaviours in P‐Free and P‐Alloyed IF‐Steel Sheets
Author(s) -
Shin Eunjoo,
Seong BaekSeok,
Lee ChangHee,
Kang HeeJae,
Huh MooYoung
Publication year - 2003
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200300198
Subject(s) - recrystallization (geology) , materials science , annealing (glass) , softening , metallurgy , microstructure , small angle neutron scattering , precipitation , neutron scattering , neutron , composite material , biology , paleontology , physics , quantum mechanics , meteorology
In order to investigate the effect of coiling temperature and alloying of phosphorus (P) on the formation of precipitates and recrystallization behaviour, initial samples of P‐free and P‐alloyed IF‐steels were prepared by coiling at 580 and 720°C. Variations of precipitates and textures after coiling, cold rolling and recrystallization annealing were studied by means of small angle neutron scattering (SANS), neutron texture measurements and TEM observations. Hardness measurements and microstructure observations disclose that both coiling temperature and alloying of P affect softening of cold rolled samples. Coiling at a lower temperature increases the number of fine precipitates smaller than 10 nm in the hot band. Upon recrystallization annealing, precipitates ranging in size from 10 to 50 nm increase at the expense of fine particles smaller than 10 nm. Recrystallization behaviours in cold rolled IF‐steel samples were discussed by tackling the distribution of precipitates and the amount of solute P atoms in solution.