期刊
MATERIALS TRANSACTIONS
卷 43, 期 12, 页码 3199-3205出版社
JAPAN INST METALS
DOI: 10.2320/matertrans.43.3199
关键词
Zr50Ca30Ni10Al10 bulk amorphous alloy; cold-rolling; tensile plastic elongation; crystalline inclusions
Controlling the cold-rolled structure of the shear-band network in Zr50Cu30Ni10Al10 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 Zr50Cu30Ni10Al10 bulk amorphous alloy. The tensile fracture surface was composed of many step marks leading to the pre-introduced shear band movement.
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