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| Nb在灰铸铁中的存在形态 | |
| 引用本文： | 朱洪波,孙小亮,闫永生,华勤,翟启杰. Nb在灰铸铁中的存在形态[J]. 现代铸铁, 2011, 0(2): 33-36. DOI: 10.3969/j.issn.1003-8345.2011.02.004 |
| 作者姓名： | 朱洪波 孙小亮 闫永生 华勤 翟启杰 |
| 作者单位： | 上海大学,材料科学与工程学院,上海,200072 |
| 基金项目： | 中信-CBMM铌钢研究与开发基金，上海大学研究生创新基金 |
| 摘 要： | 用附带能谱的扫描电镜研究了Nb在灰铸铁中的存在形态,结果显示：少量Nb以原子形式固溶于基体,绝大多数Nb形成富Nb相镶嵌在基体上面;富Nb相形态丰富,有块状（包括方块状和三角形）、不规则形状（包括X型、Y型）以及条棒状;在富Nb相形成过程中,TiN可能作为异质核心,因而对富Nb相的形成起了促进作用。 |
| 关 键 词： | 灰铸铁 Nb 富Nb相 存在形态 |
Existing Morphologies of Niobium in Cast Irons |
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| ZHU Hong-bo,SUN Xiao-liang,YAN Yong-sheng,HUA Qin,ZAI Qi-jie. Existing Morphologies of Niobium in Cast Irons[J]. Modern Cast Iron, 2011, 0(2): 33-36. DOI: 10.3969/j.issn.1003-8345.2011.02.004 | |
| Authors: | ZHU Hong-bo SUN Xiao-liang YAN Yong-sheng HUA Qin ZAI Qi-jie |
| Affiliation: | ZHU Hong-bo,SUN Xiao-liang,YAN Yong-sheng,HUA Qin,ZAI Qi-jie(Materials Science and Engineering College,Shanghai University,Shanghai 200072,China) |
| Abstract: | The existing morphologies of niobium in cast irons were investigated by using SEM with spectroscopy.The result showed that only a little quantity of niobium dissolved as the atom type in the matrix and formed solid solution,however most of the niobium formed the Nb-rich phase embedding into the matrix;the Nb-rich phase had a lots of morphologies such as the clump shape(including square and triangle shape),abnormal shape(including X type and V type),and bar shape.TiN could act as the heterogeneous crystal nu... |
| Keywords: | gray iron niobium Nb-rich phase existing morphology |
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