Mechanical properties and thermal stability of a Cu-based bulk metallic glass microalloyed with silicon

被引：7
作者：
Tsai, Pei Hua [1 ]
Lee, I. Sui [1 ]
Jian, Sheng Rui [1 ]
Jang, Jason Shian Ching [2 ]
机构：
[1] I Shou Univ, Dept Mat & Engn, Kaohsiung 840, Taiwan
[2] Natl Cent Univ, Inst Mat & Engn, Dept Mech Engn, Chungli 32001, Taiwan
来源：
JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS | 2011年 / 34卷 / 07期
关键词：
bulk metallic glasses; microalloying; mechanical properties; thermal stability; SUPERCOOLED LIQUID REGION; MINOR ALLOYING ADDITIONS; AMORPHOUS-ALLOYS; FORMING ABILITY; HIGH-STRENGTH; ZR-TI; NI; CRYSTALLIZATION; CO; OXYGEN;
D O I：
10.1080/02533839.2011.591959
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
(Cu42Zr42Al8Ag8)(100-x)Si-x (x=0 similar to 1) amorphous alloy rods of 2-6 mm diameter were prepared by Cu-mold drop casting. The thermal properties, microstructure evolution, and mechanical properties were studied by differential scanning calorimetry (DSC), X-ray diffractometry (XRD), transmission electron microscopy (TEM), hardness test, and compression test. The XRD result revealed that all as-quenched (Cu42Zr42Al8Ag8)(100-x)Si-x alloy rods exhibited a broad diffraction pattern in the amorphous phase. The (Cu42Zr42Al8Ag8)(99.5)Si-0.5 alloy was found to possess the highest glass forming ability (GFA) as well as the best thermal stability among all tested samples. In addition, both its hardness and yield strength were increased by the microalloyed Si content. The fracture strength and the plastic strain of (Cu42Zr42Al8Ag8)(99.5)Si-0.5 amorphous alloy can reach 2000 MPa and 3.5 %.
引用
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页码：917 / 923
页数：7
相关论文
共 43 条
[1]   Kinetics of phase change I - General theory [J].
Avrami, M .
JOURNAL OF CHEMICAL PHYSICS, 1939, 7 (12) :1103-1112
[2]   The effect of silicon on the glass forming ability of the Cu47Ti34Zr11Ni8 bulk metallic glass forming alloy during processing of composites [J].
Choi-Yim, H ;
Busch, R ;
Johnson, WL .
JOURNAL OF APPLIED PHYSICS, 1998, 83 (12) :7993-7997
[3]   New criterion of glass forming ability for bulk metallic glasses [J].
Du, X. H. ;
Huang, J. C. ;
Liu, C. T. ;
Lu, Z. P. .
JOURNAL OF APPLIED PHYSICS, 2007, 101 (08)
[4]   High strength ductile Cu-base metallic glass [J].
Eckert, J. ;
Das, J. ;
Kim, K. B. ;
Baier, F. ;
Tang, M. B. ;
Wang, W. H. ;
Zhang, Z. F. .
INTERMETALLICS, 2006, 14 (8-9) :876-881
[5]   Effect of oxygen on phase formation and thermal stability of slowly cooled Zr65Al7.5Cu7.5Ni10 metallic glass [J].
Gebert, A ;
Eckert, J ;
Schultz, L .
ACTA MATERIALIA, 1998, 46 (15) :5475-5482
[6]   AL-LA-CU AMORPHOUS-ALLOYS WITH A WIDE SUPERCOOLED LIQUID REGION [J].
INOUE, A ;
YAMAGUCHI, H ;
ZHANG, T ;
MASUMOTO, T .
MATERIALS TRANSACTIONS JIM, 1990, 31 (02) :104-109
[7]   Cu-based bulk glassy alloys with high tensile strength of over 2000 MPa [J].
Inoue, A ;
Zhang, W ;
Zhang, T ;
Kurosaka, K .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2002, 304 (1-3) :200-209
[8]   AL-LA-NI AMORPHOUS-ALLOYS WITH A WIDE SUPERCOOLED LIQUID REGION [J].
INOUE, A ;
ZHANG, T ;
MASUMOTO, T .
MATERIALS TRANSACTIONS JIM, 1989, 30 (12) :965-972
[9]   High-strength Cu-based bulk glassy alloys in Cu-Zr-Ti and Cu-Hf-Ti ternary systems [J].
Inoue, A ;
Zhang, W ;
Zhang, T ;
Kurosaka, K .
ACTA MATERIALIA, 2001, 49 (14) :2645-2652
[10]   Thermal and mechanical properties of Cu-based Cu-Zr-Ti bulk glassy alloys [J].
Inoue, A ;
Zhang, W ;
Zhang, T ;
Kurosaka, K .
MATERIALS TRANSACTIONS, 2001, 42 (06) :1149-1151
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