Cold-Rolled Zr50Cu30Ni10Al10 Bulk Amorphous Alloys with Tensile Plastic Elongation at Room Temperature

Autor:	Yoshihiko Yokoyama, Kenzo Fukaura, Kiyohiro Inoue
Rok vydání:	2002
Předmět:	Materials science Amorphous metal Scanning electron microscope Mechanical Engineering Metallurgy Fractography Plasticity Condensed Matter Physics Mechanics of Materials visual_art Ultimate tensile strength Aluminium alloy visual_art.visual_art_medium General Materials Science Elongation Shear band
Zdroj:	MATERIALS TRANSACTIONS. 43:3199-3205
ISSN:	1347-5320 1345-9678
DOI:	10.2320/matertrans.43.3199
Popis:	Controlling the cold-rolled structure of the shear-band network in Zr 50 Cu 30 Ni 10 Al 10 bulk amorphous alloys can enhance the tensile plastic deformability at room temperature Cold-rolling is useful for controlling the shear band network structure in bulk amorphous alloys. The cold-rolled structure in a bulk amorphous alloy is classified into two regions, the deformed shear-band region and non-deformed block region. Since the pre-deformed shear-band region moves more easily than the non-deformed region, the pre-deformed shear-band network movement is able to release applied tensile strain. Consequently, plastic tensile strain can be obtained in a cold-rolled bulk amorphous alloy by systematical movement of the shear-band network. In this study, we obtained a maximum tensile plastic strain of about 0.25% in 10% cold-rolled Zr 50 Cu 30 Ni 10 Al 10 bulk amorphous alloy. The tensile fracture surface was composed of many step marks leading to the pre-introduced shear band movement.
Databáze:	OpenAIRE
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