A Group of Cu(Zr)-based BMGs with Critical Diameter in the Range of 12 to 18 mm

材料科学技术（英文）, 2008, 24(2): 149-152.

^1, , ^2, , ^3,

1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

2.Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA

3.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

基金项目: 国家自然科学基金(50671105;50621091)

A Group of Cu(Zr)-based BMGs with Critical Diameter in the Range of 12 to 18 mm

Yong SHEN ^1, , Evan MA ^2, , Jian XU ^3,

1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

2.Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA

3.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

Keywords： Bulk metallic glasses

A group of Cu(Zr)-based bulk metallic glasses (BMGs) with critical diameter (Dc) in the 12 to 18 mm range have been obtained using copper mould casting. In the Cu-Zr-Y-AI quaternary system, a new record of Dc=14 mm was established for Cu-based compositions, and 16 mm for compositions based on equi-atomic CuZr. Additional partial substitution of Hf for Zr further elevated the Dc to 18 mm at Cu42Zr43Hf1.5Y3.5Al10.

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A Group of Cu(Zr)-based BMGs with Critical Diameter in the Range of 12 to 18 mm

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