High-cycle fatigue failure behavior of nickel-based single crystal alloys with different deviation angles in a high-temperature environment

Zhuangzhuang Mao, Yingbin Zhu, Yao Zhao, Huimin Xie, Yanhong Yang, Yizhou Zhou, Xianfu Huang*, Zhanwei Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The high-cycle fatigue failure behavior of nickel-based single crystal alloys with different deviation angles (deviated [001] orientations of 0°, 10°, and 20°) was assessed in this work. At 980 °C/600 MPa, the fatigue life decreases with increasing deviation angle from the [001] orientation.The dislocation motion is mainly Orowan deformation mechanism, and the fatigue mode is crystallographic fracture. At 980 °C/640 MPa, the fatigue life is the longest when the deviation angle is 0°, and it is the shortest when the deviation angle is 10°. The fatigue failure mode is the crystallographic fracture when the deviation angle is 0° and 20°, and it is the noncrystallographic fracture when the deviation angle is 10°. The dislocation motion is mainly a single dislocation or paired dislocation shearing γ’ phase deformation mechanism.

Original languageEnglish
Article number113118
JournalMaterials Characterization
Volume203
DOIs
Publication statusPublished - Sept 2023

Keywords

  • Different deviation angles
  • High cycle fatigue failure mechanism
  • Nickel-based single crystal

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Mao, Z., Zhu, Y., Zhao, Y., Xie, H., Yang, Y., Zhou, Y., Huang, X., & Liu, Z. (2023). High-cycle fatigue failure behavior of nickel-based single crystal alloys with different deviation angles in a high-temperature environment. Materials Characterization, 203, Article 113118. https://doi.org/10.1016/j.matchar.2023.113118