Abstract
The dislocation substructures produced during the cyclic deformation at constant total strain amplitudes of polycrystalline commercial-purity titanium resembles substructures obtained in f.c.c. and b.c.c. metals. The cyclic softening stage in annealed titanium is associated with an increased mobility of screw dislocations and cross-slip. The cyclic stress amplitude, Δσ, is decomposed into an effective, Δσ*, and an internal, Δσi stress component and the different cyclic hardening or softening stages are related to changes in these stress components. The cyclic softening stage corresponds essentially to a decrease in Δσ*, which result is discussed in terms of the mechanism by which oxygen in solution hardens titanium and zirconium.
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© 1983 Martinus Nijhoff Publishers, The Hague
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Handfield, L., Dickson, J.I. (1983). The Cyclic Deformation of Titanium: Dislocation Substructures and Effective and Internal Stresses. In: Sih, G.C., Provan, J.W. (eds) Defects, Fracture and Fatigue. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6821-9_4
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DOI: https://doi.org/10.1007/978-94-009-6821-9_4
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