Effect of relaxation state on nucleation and grain growth of nanoscale quasicrystal in Zr-based bulk metallic glasses prepared under various cooling rates

被引：10

作者：

Saida, Junji ^{[1
]}

Setyawan, Albertus Deny ^{[2
]}

Matsubara, Eiichiro ^{[3
]}

机构：

[1] Tohoku Univ, Interdisciplinary Res Ctr, Sendai, Miyagi 9808578, Japan

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[3] Kyoto Univ, Dept Mat Sci & Engn, Kyoto 6068501, Japan

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 06期

关键词：

ENTHALPY RELAXATION; AMORPHOUS-ALLOYS; CRYSTALLIZATION; TRANSITION; BEHAVIOR; ROLES; PHASE;

D O I：

10.1063/1.3622117

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Zr(65)Al(7.5)Ni(10)Cu(12.5)Pd(5) bulk metallic glasses (BMGs) in various relaxation states were prepared under different cooling rates. The grain growth rate of the primary quasicrystal was examined near the crystallization temperature. It was approximately 1 x 10(-9) m/s in less relaxed BMGs and approximately twice as large in relaxed BMGs. In contrast, the calculated homogeneous nucleation rate of the less relaxed samples was five to ten times higher (5 x 10(19)-1 x 10(20)/m(3)s) than those in the relaxed BMGs. The results indicate that the relaxation state of glassy alloys has a marked effect on nucleation and grain growth behaviors. (C) 2011 American Institute of Physics. [doi:10.1063/1.3622117]

引用

页数：3

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