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Enhanced ductility in a Zr65Cu15Al10Ni10 bulk metallic glass by nanocrystallization during compression
Highlights ► ZrCuNiAl bulk metallic glass shows the highly deformability at room temperature. ► The rods can be compressed into flakes without macroscopic global brittle failure. ► The nano precipitations retard the sudden propagation of the dominant shear bands.
Abstract A highly deformable Zr65Cu15Al10Ni10 bulk metallic glass is reported in this letter. The 1mm and 2mm rods can be compressed into flakes at room temperature without macroscopic global brittle failure even though a crack initiated after the strain was over 25%. Examinations using high-resolution transmission electron microscopy revealed that nanocrystallites appeared in the amorphous matrix during compression, retarding the sudden propagation of the dominant shear bands and promoting the branching of multiple shear bands. As a consequence, the ductility was significantly improved.
Enhanced ductility in a Zr65Cu15Al10Ni10 bulk metallic glass by nanocrystallization during compression
Highlights ► ZrCuNiAl bulk metallic glass shows the highly deformability at room temperature. ► The rods can be compressed into flakes without macroscopic global brittle failure. ► The nano precipitations retard the sudden propagation of the dominant shear bands.
Abstract A highly deformable Zr65Cu15Al10Ni10 bulk metallic glass is reported in this letter. The 1mm and 2mm rods can be compressed into flakes at room temperature without macroscopic global brittle failure even though a crack initiated after the strain was over 25%. Examinations using high-resolution transmission electron microscopy revealed that nanocrystallites appeared in the amorphous matrix during compression, retarding the sudden propagation of the dominant shear bands and promoting the branching of multiple shear bands. As a consequence, the ductility was significantly improved.
Enhanced ductility in a Zr65Cu15Al10Ni10 bulk metallic glass by nanocrystallization during compression
Qiu, Feng (author) / Shen, Ping (author) / Liu, Tao (author) / Jiang, Qichuan (author)
2011-10-19
4 pages
Article (Journal)
Electronic Resource
English
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