Microstructure characterization of hot isostatic pressed Ti–6Al–4V alloy under uniaxial compression and post heat treatment

Effect of Hot-Rolling Strategy on the Flow Behavior, Productivity, and Mechanical Performance of Ti-6Al-4V Alloy

“…The undertaken research and engineering trend are oriented to satisfy these requirements by manufacturing aircraft parts from materials with a suitable high strength-to-weight ratio [ 1 ]. Titanium alloys are extremely suitable and desirable for aerospace applications thanks to their high strength-to-weight ratio, superior mechanical properties, and outstanding corrosion resistance [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. α + β Ti alloys are the most widespread category of Ti alloys [ 1 , 5 ].…”

“…The outstanding performance of these alloys deserves to balance the high cost of the material and processing [ 11 ]. This category’s mechanical behavior and properties depend highly on its microstructural features, such as size, morphology, and distribution of α and β phases [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 12 , 13 ]. Therefore, developing and upgrading these alloys mainly depend on the smart design of the processing regime to control the microstructure and properties [ 11 , 14 ].…”

“…Depending on the service conditions and the required properties, these final products may have different microstructural morphologies, i.e., fully equiaxed, fully lamellar, bimodal, and trimodal (mixed) structures [ 2 , 5 , 6 , 7 , 8 , 15 ]. The presence of a mixture of the different phase morphologies fructifies an outstanding combination of the properties [ 5 ].…”

“…The primary deformation mechanism during the hot forming of α + β Ti alloy is the spheroidization of the α phase [ 2 , 5 , 7 , 12 ]. This mechanism is considered a dynamic recrystallization process, resulting in flow softening during deformation [ 2 , 14 ].…”

“…Zhang et al [ 7 ] studied the effects of hot compression and post-heat treatment on the microstructure of hot, isostatically pressed Ti-6Al-4V alloy. They reported that the main spheroidization mechanisms in the α + β field at temperatures in a range of 850–920 °C are bending or kinking and fragmentation of the lamellar α phase, whereas, near the β field, at a temperature of about 940 °C, dynamic recrystallization occurs, resulting in the formation of equiaxed α grains along with acicular α precipitates.…”