在真空感应炉中采用了真空碳脱氧再加钛终脱氧的脱氧工艺冶炼出了与高级别管线钢成分接近的试样钢,对钛脱氧钢中超细夹杂物的外部形貌、尺寸、内部结构和物相组成等进行了研究.在扫描电镜下通过对金相试样和电解提取的夹杂物的研究表明,钢中夹杂物是Ti-O-Mn-S形成的尺寸为1～3μm的球形复合夹杂物.通过离子减薄后观察了夹杂物的内部结构,中心是Ti-O化合物,外围是Mn-S化合物;通过电子背散射衍射(EBSD)对夹杂物物相组成的分析表明,该复合夹杂物是有利于针状铁素体(IGF)形核的TiO3和在凝固过程中以Ti2O3为核心形核的MnS.
参考文献
| [1] | Lee J L;Pan Y T .Effect of Silicon Content on Microstructure and Toughness of Simulated HAZ in Titaniun Killed Steels[J].Materials Science and Engineering,1992,8(03):236. |
| [2] | Li Y;Crowther D N .The Effect of Vanadium and Niobium on the Properties and Microstructure of the Intrecritically Reheated Coarse Grain HAZ in Low Carbon Microalloyed Steel[J].ISIJ International,2001,41(01):46. |
| [3] | Madariaga I.;Gutierrez I. .Role of the particle-matrix interface on the nucleation of acicular ferrite in a medium carbon microalloyed steel[J].Acta materialia,1999(3):951-960. |
| [4] | Gregg J;Bhadeshia H.Titanium-Rich Mineral Phases and the Nucleation of Bainite[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1994(08):1603. |
| [5] | W.-Y. CHA;T. MIKI;Y. SASAKI .Identification of titanium oxide phases equilibrated with liquid Fe-Ti alloy based on EBSD analysis[J].ISIJ International,2006(7):987-995. |
| [6] | Jong-Jin PAK;Jong-Oh JO;Sun-In KIM .Thermodynamics of Titanium and Oxygen Dissolved in Liquid Iron Equilibrated with Titanium Oxides[J].ISIJ International,2007(1):16-24. |
| [7] | 薛正良,齐江华,赵栋楠,程常桂,吴杰,郭斌.基于氧化物冶金技术的管线钢凝固脱氧热力学[J].特殊钢,2007(04):4-6. |
| [8] | 刘庆.电子背散射衍射技术及其在材料科学中的应用[J].中国体视学与图像分析,2005(04):205-210. |
| [9] | 李凡,黄海波,王雷.电子背散射衍射分析技术的应用[J].理化检验-物理分册,2007(10):505-508,516. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%