Formation and Mechanical Properties of Bulk Glassy and Quasicrystalline Alloys in Zr-Al-Cu-Ti System

被引：0
|
作者：
Qiang, J. B. [1 ]
Zhang, W. [1 ]
Xie, G. Q. [1 ]
Inoue, A. [1 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
FRONTIERS IN MATERIALS RESEARCH | 2008年 / 10卷
关键词：
METALLIC GLASSES; SUPERCOOLED LIQUID; FORMING ABILITY; PHASE; STABILITY;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The glass-forming, ability (GFA) of Zr(65)Al(7.5)Cu(27.5) alloy can be improved effectively by a certain amount of Ti addition. Bulk glassy samples of 3 nun in diameter were obtained in the compositions containing 3-7 at% Ti by copper mold casting, while further Ti additions will deteriorate GFA and lead to the formation of quasicrystals at (Zr(65)Al(7.5)Cu(27.5))(90)Ti(10). Meanwhile, the addition of Ti in the Zr(65)Al(7.5)Cu(27.5) alloy was found to alter the crystallization behavior of the metallic glasses; thus bulk quasicrystalline alloy can also be achieved by glass devitrification of Ti-containing BMGs. Room-temperature compression testing showed that; bulk quasicrystalline alloy, fabricated either by mold casting or by glass devitrification method, exhibited higher fracture strength and Young's modulus than that of the relative monolithic BMGs.
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页码：235 / 244
页数：10
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