工程科学学报Issue(5)：55-59,5.DOI:10.13374/j.issn2095-9389.2015.05.009
钛微合金化热轧双相钢的工艺研究
Investigation on processing for a titanium-microalloyed hot rolled dual phase steel
摘要
Abstract
Continuous cooling transformation curves were established and the influence of finish rolling temperature on the micro-structure was investigated for a titanium-microalloyed dual phase steel through simulation experiment. A feasible process based on sim-ulation experiment was obtained and confirmatory experiment was performed. It was found that pro-eutectoid ferrite could form in the steel when the cooling rate was less than 5℃·s-1 at a temperature of 625 to 725℃. The amount of ferrite and martensite increased firstly and then decreased slightly with the increasing of finishing rolling temperature. A higher hardness of ferrite was obtained at a higher finish rolling temperature because of precipitation strengthening. Better performance with a tensile strength of 672 MPa and a yield ratio of 0. 61 was obtained for the steel when the finish rolling and slow cooling temperatures were 840℃ and 700℃, respective-ly. The amount of this precipitation strengthening was about 78. 5 MPa based on calculations.关键词
双相钢/热轧/钛微合金化/材料加工/力学性能Key words
dual phase steel/hot rolling/titanium microalloyed/materials processing/mechanical properties分类
矿业与冶金引用本文复制引用
衣海龙,徐薇,龙雷周,刘振宇,王国栋..钛微合金化热轧双相钢的工艺研究[J].工程科学学报,2015,(5):55-59,5.基金项目
国家自然科学基金资助项目(51104046) （51104046）
中央高校基本科研业务费资助项目(N120407001, N120807001) （N120407001, N120807001）
