The Relation between Fracture Ductility and Low Cycle Fatigue Life

Jun Komotori, Masao Shimizu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A low cycle fatigue test and a microcrack propagation test were carried out under push-pull loading on low carbon steel and on pure iron, with special interest in the relation between the fracture ductility and the low cycle fatigue life. Results show that the low cycle fatigue life is not sensitive to the change in fracture ductility of the material for the ordinary low cycle regime in which the development of small surface cracks leads to the fracture of the specimen, and that this is closely related to the evidence showing that the rate of microcrack extension is not appreciably affected by the fracture ductility of the materials. Calculation of low cycle fatigue life on the basis of the law of small crack growth proposed in recent years revealed that only a small difference in fatigue life appears in the high and low ductility materials. Low Cycle Fatigue, Fatigue Life, Fracture Ductility, Manson-Coffin Law, Law of Small Crack Growth, Low Carbon Steel, Pure Iron.

Original languageEnglish
Pages (from-to)2288-2292
Number of pages5
JournalTransactions of the Japan Society of Mechanical Engineers Series A
Volume53
Issue number496
DOIs
Publication statusPublished - 1987 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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