Modelling of fracture occurrence in Ti6Al4V sheets at elevated temperature accounting for anisotropic behaviour

Anisotropic, rate-dependent ductile fracture of Ti-6Al-4V alloy

“…This result is appreciably different from the fracture locus obtained for AA2024 by Bao and Wierzbicki(2004) . This result is however consistent with the evolution found by Papasidero et al (2015) for the same aluminium alloy, and with the conclusion of a ductility higher in shear than in tension drawn by Gross et al (2016) as well as by Wang et al (2019) for Ti-6Al-4V. Regarding the strictly positive stress triaxiality range, the strain to fracture decreases as the stress triaxiality becomes more positive.…”

“…This might be because DD is more favourable to prismatic glide than RD and TD (along which (10-10) directions tend to cluster) and has the possibility to activate basal slip to accommodate the plastic strain, contrary to all three other directions (since the c axes are mostly along RD and TD, see Figure 1(e)). Wang et al. (2019) also underlined the highest ductility of a thin Ti-6Al-4V sheet along DD.…”

“…The experimental scatter in εFp was mainly attributed to the microstructural heterogeneity of the material (presence of “macro-zones” with correlated grains orientations inside, inherited from former beta grains). Wang et al. (2019) documented the anisotropic and temperature-dependent ductile fracture of Ti-6Al-4V thin sheets between room temperature (RT) and 800 °C, through tensile tests on smooth and notched samples, as well as shear tests, along various loading directions, plus Nakajima tests, at strain rates between 0.01 and 1 s −1 .…”

Impact of distortional hardening and the strength differential effect on the prediction of large deformation behavior of the Ti6Al4V alloy

“…Numerical predictions of the mechanical behavior of titanium and alpha-beta titanium alloys Ti6Al4Valso known as Ti64, Ti Gr.5 or TA6Vare commonly used for the design of lightweight and high-performance components in aerospace, automotive, medical, transport industries, among others [1][2][3]. Nowadays, significant efforts have been made to accurately model part behavior until fracture, especially where structural components are concerned [4].…”

The Effect of Position of Materials on a Build Platform on the Hardness, Roughness, and Corrosion Resistance of Ti6Al4V Produced by DMLS Technology

“…In addition, it is possible to design the appropriate shape of the individual scaffold cells as well as their orientation with respect to the stresses of the product [7]. In examining the impact of the orientation of the porous structures against the stress direction, the scope of interest has also been extended to the impact of the orientation of compact products on the building platform, in particular on mechanical properties and fatigue resistance [8][9][10][11][12][13][14][15].…”