CHEN Yin-li
,
WANG Yan
,
ZHAO Ai-min
钢铁研究学报(英文版)
Abstract： The precipitation kinetics of AlN and MnS in low carbon aluminium-killed steel was calculated. Transmission electron microscopy (TEM), energy disperse spectroscopy (EDS) and phase analyses have been used to investigate the morphology, compositions and particle size distribution of AlN and MnS precipitates in three positions of the coil. The particles of AlN and MnS precipitates in the ferrite region after coiling and distributes along and adjacent to the ferrite grain boundaries. The shapes of AlN are plate-like, the precipitates size is about 10 to 60 nm; the shapes of MnS are spherical, the precipitates size is about 200 to 600 nm. The precipitation behavior of AlN is sensitive to the isothermal temperature and holding time, the precipitation quantity and particle size distribution of AlN in different positions of coil are unequal.
关键词:
Key words: precipitation kinetics
,
morphology
,
low carbon steel
,
AlN
,
MnS
裴新华，，胡恒法，，刘振宇
钢铁
通过实验室固溶热处理试验和现场热轧工艺试验研究了板坯加热温度对AlN溶解的影响规律，并采用热力学计算进行了验证，比较了不同热轧加热温度的冷轧退火成品板的织构类型特征。研究结果表明：当板坯加热温度大于1150℃以上时，板坯中的AlN均能较充分溶解，其溶解量大于90%，常规的热轧板坯加热温度能够满足热轧镀锡原板AlN溶解的工艺要求。试验结果为制定合理的热轧镀锡原板加热温度提供了依据。
关键词:
加热温度
,
AlN
,
tin plate
,
texture
,
hot rolling
