| Mg-Ti复合脱氧对低碳微合金钢组织性能的影响 |
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| 引用本文： | 李春风,李致远,柴锋,袁晓敏. Mg-Ti复合脱氧对低碳微合金钢组织性能的影响[J]. 安徽工业大学学报, 2008, 25(4): 363-366 |
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| 作者姓名： | 李春风 李致远 柴锋 袁晓敏 |
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| 作者单位： | 安徽工业大学材料科学与工程学院,安徽马鞍山,243002;钢铁研究总院结构材料研究所,北京,100081 |
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| 摘 要： | 通过焊接热模拟和冲击韧性试验，研究了Mg-Ti脱氧和Al脱氧在大线能量焊接热循环条件下对低碳微合金钢粗晶区组织性能的影响。结果表明，Mg-Ti脱氧钢粗晶区的组织主要是针状铁素体（AF）和少量的多边形铁素体，Al脱氧钢粗晶区的组织主要是低碳贝氏体＋大量的块状铁素体。对Mg-Ti脱氧钢和Al脱氧钢在不同焊接热循环下的冲击韧性进行研究，结果表明随着焊接热输入量的增大，两种脱氧钢的冲击韧性都有所下降，但是从总体上来说Mg-Ti脱氧钢粗晶区的冲击韧性远远高出Al脱氧钢粗晶区的冲击韧性。
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| 关 键 词： | Mg-Ti复合脱氧钢 焊接热循环 组织性能 |
Effect of Mg-Ti Multiplicity Deoxidizing on the Microstructure and Properties of Low Carbon Microallyed Steel |
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| LI Chun-feng,LI Zhi-yuan,CHAI Feng,YUAN Xiao-min. Effect of Mg-Ti Multiplicity Deoxidizing on the Microstructure and Properties of Low Carbon Microallyed Steel[J]. Journal of Anhui University of Technology, 2008, 25(4): 363-366 |
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| Authors: | LI Chun-feng LI Zhi-yuan CHAI Feng YUAN Xiao-min |
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| Affiliation: | LI Chun-feng,LI Zhi-yuan, CHAI Feng, YUAN Xiao-min (1.School of Materials Science and Engineering, Anhui University of Technology, Maanshan 243002, China; 2.Institute for Structural Materials,Central Iron and Steel Reasearch Institute,Beijing 10081,China) |
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| Abstract: | Effect of Mg-Ti multiplicity deoxidizing on the microstructure of low carbon microallyed steel was investigated by weld thermal simulation and the charpy test.The results showed that the structure of heat-affected-zone was acieular ferrite and a little polygonal ferrite in Mg-Ti deoxidized steel, and in Al deoxidized steel the structure of heat-affected-zone was plenty of polygonal ferrite and pearlite. And the impact of Mg-Ti and Al deoxidizing steel at different welding thermal cycle was also investigated. It showed that the impactive toughness declines as the heat imput was higher, and the impactive toughness of Mg-Ti deoxidizing steel was higher than that of Al deoxidizing steel. |
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| Keywords: | Mg-Ti multiplicity deoxidizing steel weld thermal cycle structure and properties |
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