Ni-based amorphous alloys in the Ni-Zr-Al-Y system that have high glass forming ability and large undercooled liquid regions

S. Yi, J. S. Jang, W. T. Kim, Do Hyang Kim

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Ni-based amorphous alloys containing no metalloids are developed in the alloy system Ni-Zr-Al-Y. A partial replacement of Zr by Y significantly enhances the glass-forming ability and enlarges the undercooled liquid region during continuous heating of amorphous ribbons. A quaternary alloy Ni55Zr17Al11Y17 exhibits large undercooled liquid region (54 K) implying high glass-forming ability of the alloy. The glass transition and crystallization temperatures of the quaternary alloy obtained in a differential scanning calorimetry are 717 and 771 K, respectively. A fully amorphous rod (Φ1 mm) and a rod (Φ2 mm) having a high volume fraction (∼80%) of the amorphous phase can be prepared by copper mold injection casting.

Original languageEnglish
Pages (from-to)258-262
Number of pages5
JournalMaterials Letters
Volume48
Issue number5
DOIs
Publication statusPublished - 2001 Jan 1

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Amorphous alloys
quaternary alloys
Glass
glass
Liquids
rods
liquids
metalloids
Metalloids
glass transition temperature
ribbons
heat measurement
Crystallization
crystallization
injection
Copper
Glass transition
Differential scanning calorimetry
copper
Volume fraction

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "Ni-based amorphous alloys containing no metalloids are developed in the alloy system Ni-Zr-Al-Y. A partial replacement of Zr by Y significantly enhances the glass-forming ability and enlarges the undercooled liquid region during continuous heating of amorphous ribbons. A quaternary alloy Ni55Zr17Al11Y17 exhibits large undercooled liquid region (54 K) implying high glass-forming ability of the alloy. The glass transition and crystallization temperatures of the quaternary alloy obtained in a differential scanning calorimetry are 717 and 771 K, respectively. A fully amorphous rod (Φ1 mm) and a rod (Φ2 mm) having a high volume fraction (∼80{\%}) of the amorphous phase can be prepared by copper mold injection casting.",
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Ni-based amorphous alloys in the Ni-Zr-Al-Y system that have high glass forming ability and large undercooled liquid regions. / Yi, S.; Jang, J. S.; Kim, W. T.; Kim, Do Hyang.

In: Materials Letters, Vol. 48, No. 5, 01.01.2001, p. 258-262.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ni-based amorphous alloys in the Ni-Zr-Al-Y system that have high glass forming ability and large undercooled liquid regions

AU - Yi, S.

AU - Jang, J. S.

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AB - Ni-based amorphous alloys containing no metalloids are developed in the alloy system Ni-Zr-Al-Y. A partial replacement of Zr by Y significantly enhances the glass-forming ability and enlarges the undercooled liquid region during continuous heating of amorphous ribbons. A quaternary alloy Ni55Zr17Al11Y17 exhibits large undercooled liquid region (54 K) implying high glass-forming ability of the alloy. The glass transition and crystallization temperatures of the quaternary alloy obtained in a differential scanning calorimetry are 717 and 771 K, respectively. A fully amorphous rod (Φ1 mm) and a rod (Φ2 mm) having a high volume fraction (∼80%) of the amorphous phase can be prepared by copper mold injection casting.

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