| Mechanisms of Solidification Structure Improvement of Ultra Pure 17 wt% Cr Ferritic Stainless Steel by Ti, Nb Addition | |
| Y. T. Shan; X. H. Luo; X. Q. Hu; S. Liu | |
| 2011 | |
| 发表期刊 | Journal of Materials Science & Technology
 |
| ISSN | 1005-0302 |
| 卷号 | 27期号:4页码:352-358 |
| 摘要 | The grain structures and the precipitates in the solidification microstructure of the ultra pure 17 wt% Cr ferritic stainless steels with different Ti and/or Nb micro-alloying were investigated both experimentally and theoretically. It was found by the grain structure observation that the addition of Ti or Nb to the steel reduced the grain size (D) and elongation factor (E), and improved the equiaxed grain proportion (P) and globularity factor (xi). Among the four steels studied, the minimum grain size and maximum equiaxed grain proportion were obtained by jointly adding both Ti and Nb to the steel. The SEM observation indicated that several kinds of precipitations, such as TiN, MC (rich in Nb), Laves phase (Fe(2)Nb) and so on, formed in the corresponding steels. In addition, the results calculated using the Thermo-Calc software illustrated that TiN precipitates in the liquid at proper Ti and N contents. Meanwhile, the solidification interval (Delta T) was enlarged by the addition of Ti or Nb, and the effectiveness of Nb was stronger than Ti. Based on the experimental and calculation results, the mechanisms of grain refinement and increment in equiaxed grain proportion were discussed. |
| 部门归属 | [shan, yating; luo, xinghong; hu, xiaoqiang; liu, shi] chinese acad sci, inst met res, shenyang 110016, peoples r china.;luo, xh (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;xhluo@imr.ac.cn |
| 关键词 | Ultra Pure Ferritic Stainless Steel Micro-alloying Solidification Structure Titanium Niobium High-strength Steels Precipitation Behavior Texture Formation Microalloyed Steels Grain-refinement Microstructure Recrystallization |
| URL | 查看原文 |
| WOS记录号 | WOS:000290592200010 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/30641 |
| 专题 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Y. T. Shan,X. H. Luo,X. Q. Hu,et al. Mechanisms of Solidification Structure Improvement of Ultra Pure 17 wt% Cr Ferritic Stainless Steel by Ti, Nb Addition[J]. Journal of Materials Science & Technology,2011,27(4):352-358. |
| APA | Y. T. Shan,X. H. Luo,X. Q. Hu,&S. Liu.(2011).Mechanisms of Solidification Structure Improvement of Ultra Pure 17 wt% Cr Ferritic Stainless Steel by Ti, Nb Addition.Journal of Materials Science & Technology,27(4),352-358. |
| MLA | Y. T. Shan,et al."Mechanisms of Solidification Structure Improvement of Ultra Pure 17 wt% Cr Ferritic Stainless Steel by Ti, Nb Addition".Journal of Materials Science & Technology 27.4(2011):352-358. |
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