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Fatigue behaviors of commercially pure titanium with harmonic microstructure

  • Zihua Zhao
  • , Tatsuya Sekiguchi
  • , Sabrina N.B. Ramleh
  • , Hiroshi Fujiwara
  • , Akira Ueno
  • , Kei Ameyama
  • Ritsumeikan University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We have succeeded in designing a "Harmonic Structure Material" through use of one of the non-equilihrium powder metallurgy processes called the severe plastic deformation powder metallurgy process. The harmonic material has a network structure of continuously connected "shell" with finer grains and a dispersive structure of coarse-grained "core". The harmonic structured materials simultaneously demonstrate both high strength and good ductility. In the present study, the fatigue property of commercially pure titanium with harmonic microstructure was investigated and it exhibited enhanced fatigue limit compared with that of homogeneous coarse-grained counterpart. The initiation and propagation behaviors of fatigue cracks were examined based on observing the surface cracks and fracture surface. The role of the microstructural inhomogeneity was discussed.

Original languageEnglish
Title of host publicationTi 2011 - Proceedings of the 12th World Conference on Titanium
Pages1030-1033
Number of pages4
StatePublished - 2012
Event12th World Conference on Titanium, Ti 2011 - Beijing, China
Duration: 19 Jun 201124 Jun 2011

Publication series

NameTi 2011 - Proceedings of the 12th World Conference on Titanium
Volume2

Conference

Conference12th World Conference on Titanium, Ti 2011
Country/TerritoryChina
CityBeijing
Period19/06/1124/06/11

Keywords

  • Crack initiation
  • Crack propagation
  • Fatigue behavior
  • Harmonic microstructure
  • Pure titanium (Ti)

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