Mean stress effects on fatigue of NiTi

R. M. Tabanli, N. K. Simha*, B. T. Berg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)

Abstract

Fatigue properties of shape-memory alloys (SMA) play an important role in actuator and certain biomedical applications. Since a small cyclic stress can trigger martensitic transformation when the mean stress is close to a critical stress, it is crucial to understand the effect of mean stress. This paper examines mean stress effects on fatigue properties of a NiTi SMA through systematic experiments. Preliminary results indicate that the cycles-to-failure has a non-monotone dependence on the mean strain at fixed strain amplitude.

Original languageEnglish
Pages (from-to)644-648
Number of pages5
JournalMaterials Science and Engineering: A
Volume273-275
DOIs
Publication statusPublished - 15 Dec 1999
Externally publishedYes

Keywords

  • Fatigue
  • Martensite transformation
  • Mean stress effect
  • NiTi

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