Fatigue crack growth at different frequencies and temperatures in an fe-based metastable high-entropy alloy

Motomichi Koyama, Takeshi Eguchi, Kaneaki Tsuzaki

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, the fatigue crack growth behaviors of Fe30Mn10Cr10Co (at%) metastable high-entropy alloy at different frequencies and test temperatures were evaluated by compact tension tests. The fatigue crack growth rate did not significantly change with varying frequency. However, it increased with decreasing temperature from room temperature (RT) to 103 K owing to the promotion of the hexagonal closepacked (HCP) martensite-related cracking. Increasing the test temperature from RT to 373 K decelerated the fatigue crack growth rate perhaps owing to the formation of the ductile and reversible HCP martensite.

Original languageEnglish
Pages (from-to)641-647
Number of pages7
JournalIsij International
Volume61
Issue number2
DOIs
Publication statusPublished - 2021 Feb 15

Keywords

  • Fatigue Crack Growth
  • High-Entropy Alloy
  • Loading Frequency
  • Test Temperature
  • Transformation-Induced Plasticity

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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