Microstructure of Ti5Al2.5Sn and Ti6Al4V deformed in tensile and fatigue tests

On the effect of deep-rolling and laser-peening on the stress-controlled low- and high-cycle fatigue behavior of Ti–6Al–4V at elevated temperatures up to 550°C

“…an increase of the plastic strain amplitude with increasing number of cycles) to cyclic softening followed by cyclic hardening. This observation is consistent to previous studies on Ti-6Al-4V [40][41][42], which showed that at 350°C cyclic softening was followed by cyclic hardening for low strain amplitudes whereas monotonic cyclic softening occurred at high strain amplitudes, with no saturation in cyclic hardening apparent [9].…”

Effect of α-phase morphology on low-cycle fatigue behavior of TC21 alloy

“…11c and d). The similar martensite was reported in Ti-6Al-4V [32]. Tiny Ti 3 Al particles (a 2 ) were observed, as shown in Figs.…”

Microstructural Aspects of Adiabatic Shear Failure in Annealed Ti6Al4V

“…These platelets were identified from the corresponding SADP (attached to the micrograph) as a¢¢ (orthorhombic) type, which forms as a result of external stress (i.e., stressinduced martensite) or quenching from a high-temperature b phase. [34,35] Overall, the microstructure of the interrupted static samples is consistent with that observed at low strains in many high-stacking-fault-energy metals. At these strains, the microstructure consists essentially of dislocation cells that decrease in size and increase in relative misorientation as the strain increases.…”