High strength Ti-based bulk glassy alloys with distinct ductility

N. Nishiyama; C. L. Ma; H. Soejima; K. Amiya; A. Inoue

doi:10.4028/www.scientific.net/JMNM.24-25.699

High strength Ti-based bulk glassy alloys with distinct ductility

N. Nishiyama, C. L. Ma, H. Soejima, K. Amiya, A. Inoue

Research output: Contribution to journal › Article › peer-review

Abstract

We tried to find a Ti-based glass-forming system with high glass-forming ability and distinct ductility. As a result, a new Ti-based BMG was found in the (Ti-Zr-Hf)-Cu-Ni-Si senary system. The critical diameter for glass-formation of the alloy lay between 5 and 6 mm. The fracture strength and strain under tensile stress were 2040 MPa and 0.021, respectively. The ductility nature of the alloy is attributed to the synergetic effects of the excess free volumes due to high GFA and the pinning sites to stop the localized shear slip due to the existence of nano-crystals. These high GFA, good mechanical properties and distinct ductility enable us to apply the senary alloy for some industrial uses.

Original language	English
Pages (from-to)	699-702
Number of pages	4
Journal	Journal of Metastable and Nanocrystalline Materials
Volume	24-25
DOIs	https://doi.org/10.4028/www.scientific.net/JMNM.24-25.699
Publication status	Published - 2005

Keywords

Excess free volume
Glass-forming ability
Specific strength
Tensile strength

ASJC Scopus subject areas

Materials Science (miscellaneous)
Materials Science(all)
Condensed Matter Physics
Physical and Theoretical Chemistry

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AU - Nishiyama, N.

AU - Ma, C. L.

AU - Soejima, H.

AU - Amiya, K.

AU - Inoue, A.

PY - 2005

Y1 - 2005

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AB - We tried to find a Ti-based glass-forming system with high glass-forming ability and distinct ductility. As a result, a new Ti-based BMG was found in the (Ti-Zr-Hf)-Cu-Ni-Si senary system. The critical diameter for glass-formation of the alloy lay between 5 and 6 mm. The fracture strength and strain under tensile stress were 2040 MPa and 0.021, respectively. The ductility nature of the alloy is attributed to the synergetic effects of the excess free volumes due to high GFA and the pinning sites to stop the localized shear slip due to the existence of nano-crystals. These high GFA, good mechanical properties and distinct ductility enable us to apply the senary alloy for some industrial uses.

KW - Excess free volume

KW - Glass-forming ability

KW - Specific strength

KW - Tensile strength

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High strength Ti-based bulk glassy alloys with distinct ductility

Abstract

Keywords

ASJC Scopus subject areas

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