刘浩, 陈晓, 李平和, et al. Precipitate Behavior of Second Phase and Structure of Annealed 1.5 mm Cold Rolling Sheet of Nb-Ti Microalloy High Strength Steel[J]. Special Steel, 2006, 27(3): 26-28.
刘浩, 陈晓, 李平和, et al. Precipitate Behavior of Second Phase and Structure of Annealed 1.5 mm Cold Rolling Sheet of Nb-Ti Microalloy High Strength Steel[J]. Special Steel, 2006, 27(3): 26-28.DOI:
The precipitate behavior of second phase and structure of 0.08C- 1.0Mn-Nb+Ti<0.10 microalloy high strength steel 1.5 mm sheet deformed by 53% annealed at 650 ℃ and 680 ℃ has been tested and studied by transmission electron microscope. the results showed that the second phase in test steel was(Ti
Nb)(C
N)compound precipitate phase
generally the size of second phase particles was 20~30 nm
and with increasing annealing temperature the amount of second phase increased. The higher strength(yield strength ≥480MPa at 650 ℃)is due to second phase precipitate strength and inhabiting gain growth to form fine grain.