何建中, 刘雅政, 常大勇, et al. Effect of Chemical Composition and Rolling Process on Mixed Grain of CSP Produced X60 Pipeline Steel[J]. Special Steel, 2005, 26(5): 57-59.
何建中, 刘雅政, 常大勇, et al. Effect of Chemical Composition and Rolling Process on Mixed Grain of CSP Produced X60 Pipeline Steel[J]. Special Steel, 2005, 26(5): 57-59.DOI:
There were obvious mixed grain structure in X60 pipeline steel(0.04~0.06C
1.24~1.30Mn
0.04~0.05Nb
0.006~0.008Ti
0.015~0.030V)produced by 6 pass CSP(compact strip production)rolling. The mixed grain structure was climinated and the grain sizes in steel were 5.6~8.0 pm by no V added
modifed the composition-0.06~0.08C
1.24~1.30Mn
0.02~0.04Nb
0.007~0.010Ti
and the reduction ratio at first and second pass increased respectively to ≥42% and ≥40% from normal ≥39% and ≥36% to provide temperature and energy conditions for austenite complete recrystallization.