J. Mater. Sci. Technol. ›› 2011, Vol. 27 ›› Issue (4): 364-368.

• Reviews • 上一篇    下一篇

Study on the fatigue property of nano-grained delaminated low-carbon steel sheet

李新1,2,荆天辅3,路漫漫2,徐瑞2,梁宝岩张静武2   

  1. 1. 辽宁工程技术大学
    2. 燕山大学
    3. 燕山大学亚稳材料制备技术与科学重点实验室
  • 收稿日期:2010-06-28 修回日期:2011-02-28 出版日期:2011-04-28 发布日期:2011-04-28
  • 通讯作者: 张静武
  • 基金资助:

    层状细晶－纳米晶低碳钢板的疲劳性能与机制研究

Fatigue Property of Nano-grained Delaminated Low-carbon Steel Sheet

X. Li, T.F. Jing, M.M. Lu, R. Xu, B.Y. Liang, J.W. Zhang   

  1. 1) College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China
    2) School of Electronics and Information Engineering, Liaoning Technical University, Huludao 125105, China
    3) State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, China
    4) Materials & Chemical Engineering School, Zhongyuan University of Technology, Zhengzhou 450007, China
  • Received:2010-06-28 Revised:2011-02-28 Online:2011-04-28 Published:2011-04-28
  • Supported by:

    the National Natural Science Foundation of China under grant No. 50371073

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摘要： Tension-tension fatigue life tests on nano-grained delaminated low-carbon steel sheet under different fatigue loads are carried out, with the fatigue properties of the steel under different loads studied, and the three-dimensional microstructures of the steel are observed by TEM. In addition, the morphology of the fatigue fracture of the specimen under different loads is observed by SEM. The results show that micro-cracks form on the weak interface of the nano-grained steel under low-stress conditions, which hinders the propagation of the main cracks and reduces the fatigue crack propagation rate, resulting in the extending fatigue life of the steel

Abstract: Tension-tension fatigue life tests on nano-grained delaminated low-carbon steel sheet under different fatigue loads are carried out to study the fatigue properties of the steel. The three-dimensional microstructures of the steel are observed by TEM. In addition, the morphology of the fatigue fracture of the specimen under different loads is observed by SEM. The results show that micro-cracks form on the weak interface of the nano-grained steel under low-stress conditions, which hinders the propagation of the main cracks and reduces the fatigue crack propagation rate, resulting in the extending fatigue life of the steel

Key words: Nano-grained low-carbon steel, Delaminated structure, Tensile-tensile fatigue, Weak interface