Slip and fatigue crack formation processes in an α/β titanium alloy in relation to crystallographic texture on different scales

By F. Bridier, P. Villechaise, J. Mendez. 2008

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The effect of grain orientation on fracture morphology during high-cycle fatigue of Ti-6Al-4V (2009, background): “Grains oriented for cracking under HCF conditions tend to favour a combination of a moderately high Schmid factor coupled with a tensile stress component acting perpendicular to the basal plane [18].”
Incipient slip and long range plastic strain localization in microtextured Ti-6Al-4V titanium (2016, background): “Basal oriented MTRs that contain grains with dissimilar orientations (such as MTR 2), and high elastic anisotropy, have been shown to initiate cracks during low cycle fatigue [6].”
Microstructure, texture and mechanical property evolution during additive manufacturing of Ti6Al4V alloy for aerospace applications (2012, methodology): “The Schmid factor gives an indication of how easy it is for slip to occur for a particular system relative to the loading direction [5, 78, 175].”
Fatigue of additive manufactured Ti-6Al-4V, Part II: The relationship between microstructure, material cyclic properties, and component performance (2020, background): “Fatigue cracks can then be formed at the free surface or along grain boundaries by the intrusion-extrusion mechanism [41 – 43].”
On the mechanistic basis of deformation at the microscale in hexagonal close-packed metals (2015, methodology): “Bridier et al. [129] investigated crack nucleation in Ti–6Al–4V under standard (i.e. non-dwell) fatigue under strain control ( ε max = 0.8%, R = 0).”