Glass forming ability and crystallization behavior in amorphous Ti50Cu32-xNi15Sn3Bex (x = 0, 1, 3, 7) alloys

Yu Chan Kim, Won Tae Kim, Do Hyang Kim

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The thermal stability and crystallization behavior of melt spun Ti50Cu32-xNi15Sn3Bex (x = 0, 1, 3, 7) amorphous alloys were investigated by differential scanning calorimetry (DSC), X-ray diffractometry(XRD) and transmission electron microscopy (TEM). With increasing Be content, x from 0 to 7, ΔTx gradually decreased from 73 to 45 K, but Trg increased from 0.53 to 0.57. With increasing Be content, crystallization behavior changes from two exothermic events (x = 0, 1) to three exothermic events (x = 3, 7). Amorphous Ti50Cu32Ni15Sn3 phase crystallizes by transforming into Ti(Ni,Cu) and Ti2Ni phases, followed by transformation into a mixture of Ti(Ni,Cu), TiCu, and Ti3Sn phases. Amorphous Ti50Cu25Ni15Sn3Be7 phase crystallizes by precipitation of a few nanometer scale crystalline phase followed by decomposition into a mixture of Ti(Ni,Cu), TiCu, Ti3Sn and TiBe12 phases at high temperature. Partial replacement of Cu by Be in Ti-Cu-Ni-Sn alloy improved the glass forming ability. A fully amorphous rod of the Ti50Cu25Ni15Sn3Be7 alloy with a diameter of 2 mm was fabricated by injection casting.

Original languageEnglish
Pages (from-to)1243-1246
Number of pages4
JournalMaterials Transactions
Volume43
Issue number5
DOIs
Publication statusPublished - 2002 Jan 1

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Crystallization
crystallization
Glass
glass
Amorphous alloys
X ray diffraction analysis
Differential scanning calorimetry
Casting
Thermodynamic stability
thermal stability
rods
heat measurement
injection
Crystalline materials
Transmission electron microscopy
Decomposition
decomposition
transmission electron microscopy
scanning
titanium nickelide

All Science Journal Classification (ASJC) codes

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

Cite this

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title = "Glass forming ability and crystallization behavior in amorphous Ti50Cu32-xNi15Sn3Bex (x = 0, 1, 3, 7) alloys",
abstract = "The thermal stability and crystallization behavior of melt spun Ti50Cu32-xNi15Sn3Bex (x = 0, 1, 3, 7) amorphous alloys were investigated by differential scanning calorimetry (DSC), X-ray diffractometry(XRD) and transmission electron microscopy (TEM). With increasing Be content, x from 0 to 7, ΔTx gradually decreased from 73 to 45 K, but Trg increased from 0.53 to 0.57. With increasing Be content, crystallization behavior changes from two exothermic events (x = 0, 1) to three exothermic events (x = 3, 7). Amorphous Ti50Cu32Ni15Sn3 phase crystallizes by transforming into Ti(Ni,Cu) and Ti2Ni phases, followed by transformation into a mixture of Ti(Ni,Cu), TiCu, and Ti3Sn phases. Amorphous Ti50Cu25Ni15Sn3Be7 phase crystallizes by precipitation of a few nanometer scale crystalline phase followed by decomposition into a mixture of Ti(Ni,Cu), TiCu, Ti3Sn and TiBe12 phases at high temperature. Partial replacement of Cu by Be in Ti-Cu-Ni-Sn alloy improved the glass forming ability. A fully amorphous rod of the Ti50Cu25Ni15Sn3Be7 alloy with a diameter of 2 mm was fabricated by injection casting.",
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Glass forming ability and crystallization behavior in amorphous Ti50Cu32-xNi15Sn3Bex (x = 0, 1, 3, 7) alloys. / Kim, Yu Chan; Kim, Won Tae; Kim, Do Hyang.

In: Materials Transactions, Vol. 43, No. 5, 01.01.2002, p. 1243-1246.

Research output: Contribution to journalArticle

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