Structure and stability of the B2 phase in Ti–25Al–25Zr alloy

Deformation behavior of an ordered B2 phase in Ti–25Al–25Zr alloy

“…The lattice parameters of orthorhombic phase in compressed specimen are similar to those obtained in mechanically polished specimen [16]. It is important to mention here that a thin layer of an orthorhombic phase has been observed in this specimen in mechanically polished specimen [16] while the B2 phase completely transforms to an orthorhombic phase during compression. The microhardness of the martensitic phase is lower than that of the B2 phase (Table 1).…”

“…The detailed analysis of the XRD and transmission electron microscopy of this specimen has been reported elsewhere [16]. The engineering stress-strain curve of the alloy under compression shows that the flow stress continuously increases till fracture.…”

“…Recently, Premkumar et al [16] have observed B2 phase in an alloy Ti-25Al-25Zr. The stoichiometry of this B2 phase is same (Ti 2 AlZr) although its elements do not follow the typical combination as mentioned above.…”

Strength anomaly of the B2 phase in Ti–25Al–25Zr alloy

“…The detailed structural analysis of this phase using X-ray diffraction and transmission electron microscopy techniques has been reported elsewhere [14].…”

“…The stoichiometry of the B2 phase has been reported to be X 2 AlM or X 4 Al 3 M although this has also been reported to have several non-stoichiometric compositions with wide range of X, Al and M concentrations [5e13]. The second type of the B2 phase has been recently reported in Ti 2 AlZr alloy which does not follow the combination of alloying elements as mentioned above for the first type B2 phase [14].…”