Comparative study of very high cycle tensile and torsional fatigue in TC17 titanium alloy

Hanqing Liu, Haomin Wang, Zhiyong Huang, Qingyuan Wang, Qiang Chen

Research output: Contribution to journalArticle

Abstract

Very high cycle tensile and torsional fatigue of TC17 titanium alloy with bimodal microstructure have been firstly and comparatively studied at the stress ratio of 0.1. Like the tensile cracks, torsional cracks were substantiated to nucleate from specimen surface or interior sites and presented in a fatigue life-dependent mode. Internal tensile and torsional fatigue cracks with faceted morphology were analyzed using focus ion beam and unraveled to initiate in modes II + III that driven by maximum shear stress. Particularly, short crack branching and deflection beneath the crack initiation rough area can be observed for torsional loading condition.

Original languageEnglish
Article number105720
JournalInternational Journal of Fatigue
Volume139
DOIs
Publication statusPublished - Oct 2020

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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