CAJ | 학술논문

本文用电子显微镜技术对CSP工艺生产的普通低碳钢进行了研究,实验结果表明在试样中形成了大量细小的弥散沉淀粒子,电子衍射与XEDS分析证实这些沉淀是具有尖晶石结构的氧化铁以及硫化物,氧化物尺寸在20nm以下,大量分布在晶界和位错上.晶界上还有尺寸在100～400nm左右的硫化物粒子.这些沉淀使低碳钢的强度提高近一倍,同时塑性也大幅增高.
본문용전자현미경기술대CSP공예생산적보통저탄강진행료연구,실험결과표명재시양중형성료대량세소적미산침정입자,전자연사여XEDS분석증실저사침정시구유첨정석결구적양화철이급류화물,양화물척촌재20nm이하,대량분포재정계화위착상.정계상환유척촌재100～400nm좌우적류화물입자.저사침정사저탄강적강도제고근일배,동시소성야대폭증고.
Much research works have been carried out on the low carbon steels produced by CSP (Compact Strip Production) process. Results of the electron microscopy study showed that there exists large number of fine dispersive precipitates in the experimental steels. Their dimension is smaller than 20nm. Electron diffraction and XEDS analysis indicated that these fine precipitates are consistent wnly distribute along dislocations or grain boundaries. Some sulfides with size of about 100～400 nm were also observed at grain boundaries. These fine oxide and sulfide precipitates play a key role in nearly doubling strength of the low carbon steel as well as notable improvement of elongation.