Glass transition in Zr46.75Ti8.25Cu7.5Ni10Be27.5 metallic glass under high pressure -: art. no. 092201

被引：20

作者：

Wen, P ^{[1
]}

Wang, WH ^{[1
]}

Zhao, YH ^{[1
]}

Zhao, DQ ^{[1
]}

Pan, MX ^{[1
]}

Li, FY ^{[1
]}

Jin, CQ ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.69.092201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An approach is developed using differential scanning calorimetry with the characteristics of relaxation to exhibit a glass transition under high pressure in metallic glass, specifically, the glass transition in Zr46.75Ti8.25Cu7.5Ni10Be27.5 bulk glass-forming alloy with a very stable supercooled liquid state. Through the approach, we obtain an averaged increase of the glass transition temperature with a pressure of 5.6 K/GPa. Based on free volume theory, the formation volume (DeltaV(f)) of 6.5+/-0.5 Angstrom(3) and migration volume (DeltaV(m)) of 6.5+/-0.5 Angstrom(3) for defect diffusion, which is related to pressure-dependent free volume change, are derived. The results contribute to the understanding of the nature of the calorimetric glass transition and diffusion in metallic glasses.

引用

页数：4

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