Fatigue Initiation Lives

  • Russell Wanhill
  • Simon Barter
Part of the SpringerBriefs in Applied Sciences and Technology book series (BRIEFSAPPLSCIENCES)


As stated earlier, it is not easy to compare the fatigue strengths of conventionally (α + β) processed and heat-treated alloys and β processed and β heat-treated alloys. However, from the information in Sects. 4.2.1 and 4.2.2 it appears likely that the β annealed Ti-6Al-4V ELI thick plate, with its rather coarse prior β grain size (averaging about 1.2 mm) will have relatively low LCF and HCF strengths. The relatively low oxygen content of the ELI material (0.13 max. wt.% compared to 0.2 max. wt.% for normal grade Ti-6Al-4V) could also be detrimental to the HCF strength, see Starke and Lütjering (1979).


Fatigue Crack Fatigue Life Fatigue Strength Fatigue Curve Lamellar Microstructure 
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Copyright information

© The Author(s) 2012

Authors and Affiliations

  1. 1.Aerospace Vehicles DivisionNational Aerospace Laboratory NLREmmeloordThe Netherlands
  2. 2.Air Vehicle DivisionDSTO Defence Science and Technology OrganisationMelbourneAustralia

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