Figure 6
Enhanced room-temperature tensile ductility of Zr36.6Ti31.4Nb7Cu5.9Be19.1 (DH1), Zr38.3Ti32.9Nb7.3Cu6.2Be15.3 (DH2) and Zr39.6Ti33.9Nb7.6Cu6.4Be12.5 (DH3). (a,b) Backscattered scanning electron micrographs showing the microstructure of DH1 (a) and DH3 (b), where the dark contrast corresponds to the glass matrix and the light contrast to the dendrites. (c) Engineering stress–strain curves for Vitreloy 1, DH1, DH2 and DH3 in room-temperature tension tests. (d) Optical micrograph of necking in DH3. (e) Optical micrographs showing an initially undeformed tensile specimen contrasted with DH2 and DH3 specimens after tension testing. (f) Scanning electron micrograph of the tensile surface in DH3. (g,h) Scanning electron micrographs of necking in DH2 (g) and DH3 (h). (i) Brittle fracture representative of all monolithic BMGs. Adapted from Ref. 60 (© 2008 NPG).
