Pre-fatigue inﬂuence on quasi-static tensile properties of Ti-6Al-4V in thin-sheet form
J. Gálan Lópezaa, P. Verleysen, I. De Baere and J. Degrieck
Department of Materials Science and Engineering, Faculty of
Engineering, Ghent University Sint-Pietersnieuwstraat 41,
a e-mail: Jesus.GalanLopez@UGent.be
Published online: 10 June 2010
The response of engineering structures to loads is most often assessed without taking possible damage of the used material(s) into account. However, it has already been proved that a preceding cyclic loading and the alteration of the microstructure it causes, can have a signiﬁcant inﬂuence on the mechanical properties of steel grades and aluminium alloys , and hence on the behaviour of structural elements made of it. Ti-6Al4V, the most widely used titanium alloy, is often one of the materials chosen for cyclic loading applications where other solicitations are present too. Therefore, the inﬂuence of pre-fatigue on the quasi-static mechanical properties of Ti-6Al-4V in thin-sheet form is investigated. Tensile experiments are performed on samples subjected to diﬀerent damage levels. The material does not show a clear dependence of its tensile properties with previous loading cycles, although the overall eﬀect can be important for particular geometries.
© Owned by the authors, published by EDP Sciences, 2010