Fatigue behavior of additive manufactured CrFeCoNi medium-entropy alloy

Y. O. Kuzminova, D. G. Firsov, S. A. Dagesyan, S. D. Konev, S. N. Sergeev, A. P. Zhilyaev, M. Kawasaki, I. S. Akhatov, S. A. Evlashin

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

High-entropy alloys (HEAs) are considered to be prospective materials for operation in harsh environments. These materials often demonstrate high strength during static tests. However, a limited number of studies describe the fatigue properties of HEAs. Most of them focused on the two systems of CoCrFeMnNi or AlCoCrFeNi produced by arc or induction meltings. In this paper, the fatigue behavior of CrFeCoNi medium-entropy alloys (MEAs) produced by additive manufacturing was investigated to extend the understanding of the HEA applications. The fatigue test is conducted at a frequency of 25 Hz, and the stress ratio of 0.1. The changes in fatigue and tensile properties are studied through structural and phase analysis. Special emphasis was placed on evaluating the impact of machining and heat treatment on the fatigue characteristics of the MEA samples.

Original languageEnglish
Article number158609
JournalJournal of Alloys and Compounds
Volume863
DOIs
Publication statusPublished - 15 May 2021

Keywords

  • Additive manufacturing
  • Fatigue resistance
  • Medium–entropy alloys
  • Powder bed fusion
  • Tensile properties
  • X-ray analysis

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