1. Internal fatigue crack initiation in drawn Ti–6Al–4V wires
- Author
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Joris Everaerts, Martine Wevers, and Bert Verlinden
- Subjects
Materials science ,internal initiation ,chemistry.chemical_element ,02 engineering and technology ,facets ,subsurface initiation ,0203 mechanical engineering ,fish-eye fracture ,crystallographic texture ,General Materials Science ,titanium ,Ti 6al 4v ,Texture (crystalline) ,Composite material ,Facet ,Ti-6Al-4V alloy ,business.industry ,Mechanical Engineering ,Fatigue testing ,Titanium alloy ,Structural engineering ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,020303 mechanical engineering & transports ,chemistry ,Mechanics of Materials ,Reflection (physics) ,Fracture (geology) ,fatigue ,0210 nano-technology ,business ,Titanium - Abstract
Fatigue cracks in titanium alloys are often found to initiate at faceted alpha grains. In the very high cycle fatigue regime, crack initiation tends to shift from the surface towards the interior of the material, and more initiation facets can be found on the fracture surface. In this study, fatigue tests were performed on drawn and heat-treated Ti-6Al-4V wires. Only a few samples fractured due to interior initiation. The facets at the initiation sites of these samples were not flat, but had markings on the nano-scale, and were highly inclined. A possible explanation for these aspects is the crystallographic texture of the wire, and a reflection is made on the suggested mechanisms of facet formation. peerreview_statement: The publishing and review policy for this title is described in its Aims & Scope. aims_and_scope_url: http://www.tandfonline.com/action/journalInformation?show=aimsScope&journalCode=ymst20 ispartof: Materials Science and Technology vol:32 issue:16 pages:1639-1645 status: published
- Published
- 2016