Table of Content

Open Access iconOpen Access

PROCEEDINGS

crossmark

Effects of Hold Time on Fatigue Crack Growth Behavior in PBF-EB Inconel 718

Qiuyi Wang1, Rong Yang1, Bo Chen2, Rui Bao1,*

1 School of Aeronautic Science and Engineeing, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, China
2 Department of Mechanical Engineering, University of Southampton, University Road, Southampton, SO17 1BJ, United Kingdom

* Corresponding Author: Rui Bao. Email: email

The International Conference on Computational & Experimental Engineering and Sciences 2024, 29(1), 1-1. https://doi.org/10.32604/icces.2024.011878

Abstract

Effects of hold time on the fatigue crack growth behavior in electron-beam powder-bed-fusion (PBF-EB) Inconel 718 alloy at 650 ∘C have been investigated in this study, with focuses on the anisotropic fatigue cracking resistance and fracture mechanism. The V-type specimen (which loading parallel to the columnar grain boundaries) gives better dwell-fatigue cracking resistance to the H-type specimen (which loading perpendicular to the columnar grain boundaries) due to its large deflections (nearly 90 °) on the crack path. These deflections are related to the change of crack growth mechanism. In both V-type and H-type specimens, when the dwell-fatigue crack tip reaches high angle grain boundaries, the crack exhibits a intergranular propagation behaviour. Besides, discontinuous secondary crack which associated with high angle grain boundaries can be seen in the H-type specimen, indicating that the crack mechanism may be predominantly creep damage.

Keywords


Cite This Article

APA Style
Wang, Q., Yang, R., Chen, B., Bao, R. (2024). Effects of hold time on fatigue crack growth behavior in PBF-EB inconel 718. The International Conference on Computational & Experimental Engineering and Sciences, 29(1), 1-1. https://doi.org/10.32604/icces.2024.011878
Vancouver Style
Wang Q, Yang R, Chen B, Bao R. Effects of hold time on fatigue crack growth behavior in PBF-EB inconel 718. Int Conf Comput Exp Eng Sciences . 2024;29(1):1-1 https://doi.org/10.32604/icces.2024.011878
IEEE Style
Q. Wang, R. Yang, B. Chen, and R. Bao, “Effects of Hold Time on Fatigue Crack Growth Behavior in PBF-EB Inconel 718,” Int. Conf. Comput. Exp. Eng. Sciences , vol. 29, no. 1, pp. 1-1, 2024. https://doi.org/10.32604/icces.2024.011878



cc Copyright © 2024 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 115

    View

  • 68

    Download

  • 0

    Like

Share Link