Phase competition of Cu64Zr36 and its effect on glass forming ability of the alloy

被引：17

作者：

Cui, X. ^{[1
]}

Zu, F. Q. ^{[1
]}

Zhang, W. J. ^{[1
]}

Wang, Z. Z. ^{[1
]}

Li, X. Y. ^{[1
]}

机构：

[1] Hefei Univ Technol, Inst Liquid Solid Met Proc, Sch Mat Sci & Engn, Hefei 230009, Peoples R China

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 2013年 / 48卷 / 01期

基金：

中国国家自然科学基金;

关键词：

bulk metallic glass; crystallization; competing crystal phase; glass forming ability; SUPERCOOLED LIQUID REGION; BULK METALLIC-GLASS; NI AMORPHOUS-ALLOYS; CU-ZR-TI; MECHANICAL-PROPERTIES; TRANSITION TEMPERATURE; ELECTRICAL-RESISTIVITY; BEHAVIOR; CRYSTALLIZATION; SYSTEM;

D O I：

10.1002/crat.201200337

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

In the present paper, crystallization behavior and glass forming ability (GFA) of Cu64Zr36 bulk metallic glass (BMG) were studied based on the crystal phase competition. Electrical resistivity and X-ray diffraction results indicate that Cu64Zr36 glass underwent a two-stage crystallization process, during which Cu10Zr7 and Cu51Zr14 crystals precipitate at first and then there are only Cu10Zr7 and Cu8Zr3 phases at the end of the second stage. Intriguingly, it was found that it is the competing phase Cu10Zr7 that weakens GFA of the Cu64Zr36 alloy, because the Cu10Zr7 precipitate is fully restrained in the cast rod when substituting Zr with 7.5at%Ti and thereby its diameter with fully amorphous structure is enlarged from 1 mm to 2 mm.

引用

页码：11 / 15

页数：5

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