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Volume 25 Issue 10
Oct.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(10): 1156-1165
Qian Zhao, Li-ming Yu, Yong-chang Liu, Yuan Huang, Zong-qing Ma, and Hui-jun Li, Effects of aluminum and titanium on the microstructure of ODS steels fabricated by hot pressing, Int. J. Miner. Metall. Mater., 25(2018), No. 10, pp. 1156-1165. https://doi.org/10.1007/s12613-018-1667-7
Cite this article as:
Qian Zhao, Li-ming Yu, Yong-chang Liu, Yuan Huang, Zong-qing Ma, and Hui-jun Li, Effects of aluminum and titanium on the microstructure of ODS steels fabricated by hot pressing, Int. J. Miner. Metall. Mater., 25(2018), No. 10, pp. 1156-1165. https://doi.org/10.1007/s12613-018-1667-7
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研究论文

Effects of aluminum and titanium on the microstructure of ODS steels fabricated by hot pressing

  • State Key Lab of Hydraulic Engineering Simulation and Safety, School of Materials Science & Engineering, Tianjin University, Tianjin 300354, China

  • 通讯作者:

    Li-ming Yu    E-mail: lmyu@tju.edu.cn

    Yong-chang Liu    E-mail: ycliu@tju.edu.cn

  • Three oxide-dispersion-strengthened (ODS) steels with compositions of Fe-14Cr-2W-0.2V-0.07Ta-0.3Y2O3 (wt%, so as the follows) (14Y), Fe-14Cr-2W-0.2V-0.07Ta-1Al-0.3Y2O3 (14YAl), and Fe-14Cr-2W-0.2V-0.07Ta-0.3Ti-0.3 Y2O3 (14YTi) were fabricated by hot pressing. Transmission electron microscopy (TEM) was used to characterize the microstructures and nanoparticles of these ODS steels. According to the TEM results, 14Y, 14YAl, and 14YTi ODS steels present similar bimodal structures containing both large and small grains. The addition of Al or Ti has no obvious effect on the microstructure of the steels. The spatial and size distribution of the nanoparticles was also analyzed. The results indicate that the average size of nanoparticles in the 14YTi ODS steel is smaller than that in the 14YAl ODS steel. Nanoparticles such as Y2O3, Y3Al5O12 and YAlO3, and Y2Ti2O7 were identified in the 14Y, 14YAl, and 14YTi ODS steels, respectively.
    • Research Article

    Effects of aluminum and titanium on the microstructure of ODS steels fabricated by hot pressing

    + Author Affiliations
      Abstract
    • Three oxide-dispersion-strengthened (ODS) steels with compositions of Fe-14Cr-2W-0.2V-0.07Ta-0.3Y2O3 (wt%, so as the follows) (14Y), Fe-14Cr-2W-0.2V-0.07Ta-1Al-0.3Y2O3 (14YAl), and Fe-14Cr-2W-0.2V-0.07Ta-0.3Ti-0.3 Y2O3 (14YTi) were fabricated by hot pressing. Transmission electron microscopy (TEM) was used to characterize the microstructures and nanoparticles of these ODS steels. According to the TEM results, 14Y, 14YAl, and 14YTi ODS steels present similar bimodal structures containing both large and small grains. The addition of Al or Ti has no obvious effect on the microstructure of the steels. The spatial and size distribution of the nanoparticles was also analyzed. The results indicate that the average size of nanoparticles in the 14YTi ODS steel is smaller than that in the 14YAl ODS steel. Nanoparticles such as Y2O3, Y3Al5O12 and YAlO3, and Y2Ti2O7 were identified in the 14Y, 14YAl, and 14YTi ODS steels, respectively.
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