Effect of Rare Earth on Microstructure and Impact Toughness of Low Carbon Steel Based on Compact Strip Production Process
Effect of Rare Earth on Microstructure and Impact Toughness of Low Carbon Steel Based on Compact Strip Production Process
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DOI：
10.4028/www.scientific.net/amr.189-193.1753
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发表时间：
2011-02
期刊：
影响因子：
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通讯作者：
H. Wang;H. Ren;Z. Jin;C. Zong
中科院分区：
文献类型：
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作者：
H. Wang;H. Ren;Z. Jin;C. Zong
研究了稀土对CSP工艺热轧低碳结构钢组织和冲击韧性的影响。利用扫描电镜（SEM）对试样的微观组织和断口进行了分析.在Gleeble-1500热模拟机上进行了热压缩试验。结果表明，在低碳钢中加入适量的稀土元素，可诱导针状铁素体和/或超细铁素体组织，并具有较好的强韧性。与商用低碳结构钢相比，稀土的加入也能提高低碳结构钢的动态再结晶临界应变。此外，稀土对这些针状铁素体形态的形成的作用进行了研究。
The effect of rare earth (RE) on microstructure and impact toughness of hot rolled low carbon structure steel based on the Compact strip production (CSP) process was investigated in this work. Scan electron microscope (SEM) were employed to characterize the microstructure and analyze the fracture surface. Moreover, hot compression experiments were also adopted on the Gleeble-1500 hot simulator as well. The results indicate that acicular ferrite and/or ultrafine ferrite morphologies can be induced when an appropriate amount of rare earth added into the low carbon steel, which possessed the satisfied strength and toughness behaviors. Compared with commercial low carbon structural steels, the additions of RE can improve dynamic recrystallization critical strain of low carbon structural steel as well. In addition, the role of RE on the formation of these acicular ferrite morphologies has been investigated.