TY - GEN
T1 - Recrystallisation at intercritical annealing in low carbon steels
AU - Maruyama, N.
AU - Ogawa, T.
AU - Takahashi, M.
PY - 2007
Y1 - 2007
N2 - Subgrain growth in deformed ferrite and incomplete recrystallisation during intercritical annealing in low carbon (LC) steels was investigated by EBSD and FEGTEM/EDS. It was confirmed that fine dual phase (α-γ) microstructures could be obtained even without the addition of microalloying elements such as Nb and Ti, if the steels were heated above Ac1 temperature before the completion of primary recrystallisation and then intercritically annealed. The fine microstructure was found to be mainly due to the inhibition of primary recrystallisation, and also due to the inhibition of subgrain growth in deformed matrix by finely dispersed γ phase formed during heating. Mn segregation at α/γ interfaces seems to indicate that the kinetics of boundary migration in the existence of y is controlled by the volume diffusion of substitutional alloying elements across the α/γ interfaces.
AB - Subgrain growth in deformed ferrite and incomplete recrystallisation during intercritical annealing in low carbon (LC) steels was investigated by EBSD and FEGTEM/EDS. It was confirmed that fine dual phase (α-γ) microstructures could be obtained even without the addition of microalloying elements such as Nb and Ti, if the steels were heated above Ac1 temperature before the completion of primary recrystallisation and then intercritically annealed. The fine microstructure was found to be mainly due to the inhibition of primary recrystallisation, and also due to the inhibition of subgrain growth in deformed matrix by finely dispersed γ phase formed during heating. Mn segregation at α/γ interfaces seems to indicate that the kinetics of boundary migration in the existence of y is controlled by the volume diffusion of substitutional alloying elements across the α/γ interfaces.
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U2 - 10.4028/0-87849-443-x.247
DO - 10.4028/0-87849-443-x.247
M3 - Conference contribution
AN - SCOPUS:38349170721
SN - 087849443X
SN - 9780878494439
T3 - Materials Science Forum
SP - 247
EP - 252
BT - Recrystallization and Grain Growth III - Proceedings of the Third International Conference on Recrystallization and Grain Growth, ReX and GG III
PB - Trans Tech Publications Ltd
T2 - 3rd International Conference on Recrystallization and Grain Growth, ReX GG III
Y2 - 10 June 2007 through 15 June 2007
ER -