...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Effect of lanthanum on the precipitation and dissolution of NbC in microalloyed steels
【24h】

Effect of lanthanum on the precipitation and dissolution of NbC in microalloyed steels

机译：镧对NbC在微合金钢中析出和溶解的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effect of lanthanum on the precipitation and dissolution of NbC in microalloyed steel was investigated using a combination method of thermo-mechanical experiment and the first-principle calculations. The interaction of niobium with lanthanum is attractive in the 2nn to 6nn shell, and that of carbon with lanthanum is relatively strongly attractive in 4nn(B) and 5nn coordination shells. These attractive interactions lead to an increase in the Nb and C solubility in fcc Fe, and a decrease in the chemical potential of these two solutes, thereby suppressing the formation of NbC. The strain-induced precipitation intensity was characterized using field emission scanning electron microscope (FE-SEM) and inductively coupled plasma optical emission spectrometry (ICP-OES). The experimental results reveal that after deformation NbC precipitated more in La free steel than in La addition steel. And since the relatively higher dissolution rate of NbC in La addition steel, the Zener pinning effect decreased slightly faster, leading to a higher coarsening rate of austenite grain during isothermally heating at 1200 ℃.
机译：结合热力学实验和第一性原理计算，研究了镧对NbC在微合金钢中的析出和溶解的影响。铌与镧的相互作用在2nn至6nn壳中具有吸引力，而碳与镧的相互作用在4nn（B）和5nn配位壳中具有较强的吸引力。这些有吸引力的相互作用导致Nb和C在fcc Fe中的溶解度增加，并且这两种溶质的化学势降低，从而抑制了NbC的形成。使用场发射扫描电子显微镜（FE-SEM）和电感耦合等离子体发射光谱（ICP-OES）对应变诱导的沉淀强度进行了表征。实验结果表明，变形后NbC在La游离钢中的析出量比在La添加钢中大。而且，由于La添加钢中NbC的溶解速率相对较高，齐纳钉扎效应略有下降，导致在1200℃等温加热过程中奥氏体晶粒的粗化速率更高。

著录项

  • 来源
    《Materials Science and Engineering》 |2017年第23期|116-122|共7页
  • 作者

    Xueyun Gao; Huiping Ren; Haiyan Wang; Shuming Chen;

  • 作者单位

    School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China,Huatian Engineering and Technology Corporation, China metallurgical Group Corporation, Baotou 014010, China;

    School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;

    School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;

    School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Lanthanum; NbC; Precipitation; Microalloyed steel;

    机译：镧;NbC;沉淀;微合金钢;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号