张玉胜, 刘雅政, 刘照, et al. Effect of Finished Rolling Cooling Rate on Structure of Microalloy Non Quenched-Tempered Steel 34Mn2VN[J]. Special Steel, 2006, 27(6): 24-26.
张玉胜, 刘雅政, 刘照, et al. Effect of Finished Rolling Cooling Rate on Structure of Microalloy Non Quenched-Tempered Steel 34Mn2VN[J]. Special Steel, 2006, 27(6): 24-26.DOI:
Dynamic continuous cooling transformation(CCT)curves and structure transition of non quenched-tempered steel 34Mn2VN(0.30~0.34C
1.20~1.70Mn
0.014~0.018N
0.07~0. 12V)at 950℃ with average strain rate 2 s-¹and 15% strain
then cooling with 0.1~45 ℃/s different rate have been studied by Cleeble-1500 thermal simulation machine. The results obtained that as cooling rate was controlled within 0.8~2.0 ℃/s
the fine ferrite and minor bainite structure was obtained
it had higher impact toughness. Commercial production application showed that the impact energy of φ139.7×7.7(mm) and φ114.0×6.4(mm) steel tubes produced with that cooling rate was 47.8~50.9 J.