Fig. 4 Tri-planner collage of optical micrograph of Ti14 alloy
after heat treatment: (a) Solid forging; (b) Semi-solid forging at
1 000 °C; (c) Semi-solid forging at 1 050 °C
microstructure is refined, which indicates that heat
treatment can improve the microstructure of semi-solid
alloy, resulting in improvement of mechanical properties.