Effects of Trace Ce on Mechanical Properties of a Ferritic/Martensitic Heat Resistant Steel Containing High Cr and Co

被引：0
|
作者：
Wang K. [1 ,2 ]
Yang R. [1 ,2 ]
Cai X. [1 ]
Zheng L. [1 ]
Hu X. [1 ,2 ]
Li D. [1 ,2 ]
机构：
[1] Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang
[2] School of Materials Science and Engineering, University of Science and Technology of China, Shenyang
来源：
Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2022年 / 36卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Heat resistant steel; Metallic materials; Microstructure; Rare earth; Toughness and plasticity;
D O I：
10.11901/1005.3093.2021.236
中图分类号：
学科分类号：
摘要：
High Co and Cr containing martensitic heat resisting steels of X20Co without and with trace Ce addition were heat treated under different conditions, then the effect of trace Ce on the microstructure and mechanical properties of the steels were investigated by means of optical microscope, scanning electron microscope, X-ray diffractometer and tensile tester. The results show that in the quenching process, the addition of 50×10-6 Ce can promote the precipitation of M6C type carbides along the grain, therewith hinder the grain boundary migration, and make the refinement of austenite grains; As a consequence, the accumulation and growth of M23C6 type carbides along grain boundaries can be inhibited during tempering process. At the same time, the addition of 50×10-6 Ce has no significant effect on the hardness, strength and high temperature instantaneous tensile strength, but the toughness and plasticity at room temperature as well as the high temperature plasticity are significantly improved for the high Co and Cr containing martensitic steel X20Co. © 2022, Editorial Office of Chinese Journal of Materials Research. All right reserved.
引用
收藏
页码：261 / 270
页数：9
相关论文
共 29 条
  • [1] Yan P, Liu Z D, Bao H S, Weng Y Q, Liu W., Effect of microstructural evolution on high-temperature strength of 9Cr-3W-3Co martensitic heat resistant steel under different aging conditions, Mater. Sci. Eng, 588, (2013)
  • [2] Guo C B, Long S Y, Liao H M., Research of high chromium and cobalt refractory steel, Mater. Rep, 22, (2008)
  • [3] Qiu Q Z., Study on a high cobalt and chromium containing die steel for the magnesium alloy die casting, (2007)
  • [4] Huang X Q, Li P J, Liu S X, Cao D B, Peng C., The wear mechanism of the chamber and plunger materials of hot chamber die casting machine for magnesium alloy, Foundry, 50, (2001)
  • [5] Hu X Q, Xiao N M, Luo X H, Li D Z., Transformation Behavior of Precipitates in a W-alloyed 10 wt pct Cr Steel for Ultra-supercritical Power Plants, J. Mater. Sci. Technol, 26, (2010)
  • [6] Li S Z, Eliniyaz Z, Dong X P, Shen Y Z, Zhang L T, Shan A D., Effect of stress on microstructural evolution and mechanical properties of 12Cr3W3Co steel during aging and short-term creep, Mater. Sci. Eng, 580, (2013)
  • [7] Xue S, Yang T, Guo R D, Deng A L, Liu X D, Zheng L X., Crack analysis of Cr-Mo-V-Si medium-carbon alloy steel in casting die [J], Eng. Fail. Anal, 120, (2021)
  • [8] Du N Y, Liu H W, Fu P X, Liu H H, Sun C, Cao Y F, Li DZ., Microstructural stability and softening resistance of a novel hot-work die Steel [J], Crystals, 10, (2020)
  • [9] Chen P F., A review on the behavior of the addition of rare-earth in steel, Acta Metall. Sin, 14, (1978)
  • [10] Du T., Physical-chemistry effect of rare earth elements on metallic materials, Acta Metall. Sin, 33, (1997)
123