摘要
采用Tacnai—F20型透射电镜和ZEISS LSM700型激光共聚焦显微镜研究了钢板在200。650qC回火过程中，钢板的相体积百分含量的变化，并对Cu析出相进行了表征。结果表明，本实验中cu存在的形式及尺寸不是影响腐蚀最关键的因素。通过回火，TMCP态钢板的应力得到一定的释放，组织更加均匀，另外残余奥氏体的分解使得钢板组织中铁素体呈上升的趋势，综合匹配，使得材料在600℃回火时腐蚀性能最优。
Change of phase volume percentage content of steel plate during tempering process at 200- 650 ℃ was studied with Tacnai-F20 transmission electron microscope （TEM） and ZEISS LSM700 confocal laser scanning microscope （CLSM） and precipitated phase in Cu was characterized. The results showed that the existence and the size of Copper were not the key factor to corrosion. By tempering treatment, stress of the steel plate of TMCP state has been released, microstructure was more uniform, in addition, austenite decomposition made ferrite show the tendency of rising in micro- structure of steel plate, which made corrosion resistance optimal during tempering at 600 ℃.
出处
《南钢科技与管理》
2012年第4期6-11,共6页
NISCO Technology and Management
关键词
腐蚀
Cu析出
回火
corrosion
Copper precipitation
tempering
