Grain reorientation and stress-state evolution during cyclic loading of an α-Ti alloy below the elastic limit

Rachel E. Lim, Darren C. Pagan, Joel V. Bernier, Paul A. Shade, Anthony D. Rollett

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

High-energy synchrotron x-rays are used to track grain-averaged lattice reorientation and stress-state evolution in Ti–7Al as it is cyclically loaded to 90% of its macroscopic yield stress. This evolution provides clear indication of accumulating plastic strain even though the sample never exceeded the elastic limit. The largest changes in lattice orientation and stress state are observed following the first cycle then evolution continues at a lower rate with subsequent cycles. Variation of the axes about which lattice reorientation occurs is found to be highly dependent on the maximum resolved shear stress and corresponding activation of various families of slip systems.

Original languageEnglish (US)
Article number106614
JournalInternational Journal of Fatigue
Volume156
DOIs
StatePublished - Mar 2022

All Science Journal Classification (ASJC) codes

  • Modeling and Simulation
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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