Compositional Dependence of the Viscosity of Zr-Cu-Al Alloys in the Supercooled Liquid State

• YAMADA Masahiro

  Univ. of Hyogo

• TANIMOTO Yosuke

  Univ. of Hyogo

• YAMASAKI Tohru

  Univ. of Hyogo

• KIKUCHI Takeyuki

  Univ. of Hyogo

• YOKOYAMA Yoshihiko

  Inst. for Materials Res., Tohoku Univ.

• INOUE Akihisa

  Tohoku Univ.

Bibliographic Information

Other Title

• Ｚｒ‐Ｃｕ‐Ａｌ系金属ガラス合金の過冷却液体領域における粘度の組成依存性
• Zr-Cu-Al系金属ガラス合金の過冷却液体領域における粘度の組成依存性
• Zr Cu Alケイ キンゾク ガラス ゴウキン ノ カレイキャク エキタイ リョウイキ ニ オケル ネンド ノ ソセイ イソンセイ

Abstract

Zr₅₀Cu_50-XAl_X (X = 2 to 16) and Zr_90-YCu_YAl₁₀ (Y = 30 to 45) bulk metallic glasses (BMGs) have been prepared by tilt casting techniques. The viscosity of the supercooled liquids has been measured by using a penetration viscometer with a column-shaped tungsten indenter with 0.5mm in diameter and an applied load of 0.020N at a high-speed heating at a rate of 400K/min in a highly-purified He-gas atmosphere. In the Zr₅₀Cu_50-XAl_X (X = 2 to 16) system, the viscosity of the supercooled liquids exhibited almost the same values when the Al-content was increased from 2 to 10 at. %. When the Al-content increased to 12 at. %, the viscosity of the supercooled liquids increased largely. A large amount of the ZrCu (B2) phase after crystallization of this BMG system was detected when the Al-content was 10 at. % and below. While, when the Al-content was increased to 12 at. %, the main precipitation phase was changed to the ZrCu (B19') phase. Similar increase in the viscosity of the Zr_90-YCu_YAl₁₀ (Y = 30 to 45) supercooled liquids was also observed when the Cu-content was increased from 30 to 45 at. %. This may be due to the strong relationships between the compositional dependence of structure and the viscosity of the supercooled liquids in these BMG systems.

Journal

• Journal of the Society of Materials Science, Japan

  Journal of the Society of Materials Science, Japan 59 (2), 124-129, 2010

  The Society of Materials Science, Japan

Keywords

• Zr-Cu-Al
• Bulk metallic glasses
• Supercooled liquid
• Viscosity
• Compositional dependence

Details

• CRID: 1390282680396262528
• NII Article ID: 130000165569
• NII Book ID: AN00096175
• DOI: 10.2472/jsms.59.124
• COI: 1:CAS:528:DC%2BC3cXjsFymurw%3D
• ISSN: 18807488
• ISSN: 05145163
• NDL BIB ID: 10589024
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10589024
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed