Microstructural evolution and creep deformation behavior of novel Ti−22Al−25Nb−1Mo−1V−1Zr−0.2Si (at.%) orthorhombic alloy

Precipitation Behavior of Orthorhombic Phase in Ti-22Al-25Nb Alloy during Slow Cooling Aging Treatment and Its Effect on Tensile Properties

“…With the increase of temperature, the O phase nucleates preferentially at grain boundary. The driving force for coarsening derived from the interfacial energy [19,20]. However, the globular O phase only exists at grain boundaries when the aging temperature reaches 950 • C. The driving force of spheroidization is provided by the reduction in interface energy [21].…”

Creep Behavior of Near α High Temperature Ti-6.6Al-4.6Sn-4.6Zr-0.9Nb-1.0Mo-0.32Si Alloy

“…The α+β colony size will be reduced with the decrease of β grain size, therefore, the α+β colony size can be effectively controlled by controlling the β crystal size (Yang et al, 2015). Moreover, small β grains can introduce more boundaries to serve as the barriers for dislocation transmission, which could influence the mechanical properties of Ti alloy (He et al, 2019). The creep rate becomes higher when the sizes of average grains become smaller.…”

Research on Hot Deformation Behavior of Mo‐Containing Ti2AlNb‐Based Alloy

“…[1][2][3][4] To solve the brittleness of Ti 2 AlNb-based alloys and improve their hot deformation capability, a great number of researches have been conducted on the composition design of the Ti 2 AlNb-based alloys. [5,6] As a β-phase stabilizing element, the Mo element can improve the hot workability of the alloy and refine the microstructure. [7] At the same time, the Mo element reduces the fluidity and solidification shrinkage rate of the alloys during the casting process.…”