Fatigue crack propagation study of precipitation hardened steels

Virendra Kumar Verma, He Liu, Shigeru Hamada, Hiroshi Noguchi

Research output: Contribution to journalConference articlepeer-review


The present study deals with the fatigue crack propagation of two different precipitation hardened steels. The two steels differ in the nature of precipitate they bear. The steel having the soft precipitate with coarse grain and the steel having the hard precipitate with fine grain. Instead of having different grain structure and precipitates the two steels have same tensile strength and hardness value. The conventional studies conclude that if two materials have same tensile strength then fatigue properties of two materials will also exhibit same nature. The FEM analysis results obtained concludes that the fatigue property of both steels are not only different but also shows a vice-versa nature for initially small and large crack. The reason for such a behavior is explored using experimental methods, crack growth is monitored and also analytical techniques (Finite element method) were implemented to reach at a final conclusion.

Original languageEnglish
Pages (from-to)4470-4474
Number of pages5
JournalMaterials Today: Proceedings
Publication statusPublished - 2019
EventInternational Conference on Advances in Materials and Manufacturing Applications, IConAMMA 2019 - Bengaluru, India
Duration: Aug 29 2019Aug 31 2019

All Science Journal Classification (ASJC) codes

  • General Materials Science


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