Fig. 5
Schematic depiction of the martensitic amorphization. a Sketch of the observed microstructure illustrating the lenticular amorphous regions and their preferred orientations along <110>β or <001>β. A \({\mathrm{\{ 112\} }}\left\langle {{\mathrm{11}}\overline {\mathrm{1}} } \right\rangle\) lattice shear results in remnant β-Ti strips parallel to \(\left\langle {{\mathrm{11}}\overline {\mathrm{1}} } \right\rangle\) and distinct shear steps in the lenticular regions. b Crystallography of conventional martensitic transformations from β (\({\mathrm{Im}}\overline {\mathrm{3}} {\mathrm{m}}\)) to α′ (\({\mathrm{P6}}_{\mathrm{3}}{\mathrm{/mmc}}\)), α″ (Cmcm), and ω (\({\mathrm{P6/mmm}}\)). By an irregular atomic displacement, the β lattice can collapse into an amorphous phase. c Metastable phase diagram with DSC-measured data of (Ti0.615Zr0.385)100-3.9x(Cu2.3Fe1.6) x (0 ≤ x ≤ 1.5) alloys during cooling. The error bars indicate the standard deviation of the DSC data during heating (β-transus) and cooling (Ms-line)
