Formation, thermal stability, mechanical properties and corrosion resistance of Cu-Zr-Ti-Ni-Nb bulk glassy alloys

Tsuyoshi Yamamoto, Chunling Qin, Tao Zhang, Katsuhiko Asami, Akihisa Inoue

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Bulk glassy alloys exhibiting high strength and good corrosion resistance were formed in (Cu0.6Zr0.3Ti0.1)100-x-y NiyNbx systems. The bulk glassy alloy rods with a diameter of 3 mm are formed in a wide composition range of 0 to 6 at%Ni and 0 to 6 at%Nb by copper mold casting. As the Nb content increases, the glass transition temperature (Tg) increases while the crystallization temperature (Tx) decreases, resulting in a decrease in ΔTx (= Tx - Tg) from 60 K at 0 at%Nb to 36 K at 5 at%Nb. The high fracture strength (σc,f) exceeding 2000 MPa is obtained for the Cu-Zr-Ti-Ni-Nb alloys containing more than 3 at%Nb and their high strength alloys also exhibit distinct plastic elongation of 0.2 to 0.8%. The corrosion resistance of the Cu-Zr-Ti bulk glassy alloy is also significantly improved by the simultaneous addition of Ni and Nb and no loss in sample weight in 1 N HCl and 3%NaCl solutions is detected for the Cu-Zr-Ti-Ni-Nb alloys containing 5 at%Ni and 6 at%Nb or 2 at%Nb, respectively. The usefulness of the simultaneous addition of Ni and Nb on the σc,f and corrosion loss in conjunction with high glass-forming ability seems to affect significant influence on the future development of bulk glassy alloys with special functional characteristics.

Original languageEnglish
Pages (from-to)1147-1152
Number of pages6
JournalMaterials Transactions
Volume44
Issue number6
DOIs
Publication statusPublished - Jan 1 2003
Externally publishedYes

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corrosion resistance
Corrosion resistance
Thermodynamic stability
thermal stability
mechanical properties
Mechanical properties
high strength alloys
High strength alloys
Crystallization
fracture strength
glass transition temperature
elongation
Fracture toughness
Copper
Elongation
corrosion
Casting
rods
plastics
titanium nickelide

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Formation, thermal stability, mechanical properties and corrosion resistance of Cu-Zr-Ti-Ni-Nb bulk glassy alloys. / Yamamoto, Tsuyoshi; Qin, Chunling; Zhang, Tao; Asami, Katsuhiko; Inoue, Akihisa.

In: Materials Transactions, Vol. 44, No. 6, 01.01.2003, p. 1147-1152.

Research output: Contribution to journalArticle

Yamamoto, Tsuyoshi ; Qin, Chunling ; Zhang, Tao ; Asami, Katsuhiko ; Inoue, Akihisa. / Formation, thermal stability, mechanical properties and corrosion resistance of Cu-Zr-Ti-Ni-Nb bulk glassy alloys. In: Materials Transactions. 2003 ; Vol. 44, No. 6. pp. 1147-1152.
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