Ductile Ti-Based Bulk Metallic Glasses with High Specific Strength

被引：37

作者：

Park, J. M. ^{[1
]}

Wang, G. ^{[1
]}

Pauly, S. ^{[1
]}

Mattern, N. ^{[1
]}

Kim, D. H. ^{[2
,3
]}

Eckert, J. ^{[1
]}

机构：

[1] IFW Dresden, Inst Complex Mat, D-01171 Dresden, Germany

[2] Yonsei Univ, Dept Met Engn, Ctr Noncrystalline Mat, Seoul 120749, South Korea

[3] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2011年 / 42A卷 / 06期

关键词：

MATRIX-COMPOSITES; PLASTICITY; DEFORMATION; ENHANCEMENT; TRANSITION; BEHAVIOR; ALLOYS;

D O I：

10.1007/s11661-010-0416-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ti-based bulk metallic glasses (BMGs) with large compressive plasticity were developed in the Ti-rich part of Vitreloy series BMGs (Ti65-x Zr (x) Cu9Ni8Be18 alloys with x = 0, 5, 10, 15, and 20). The current materials exhibit high fracture strength reaching similar to 2.3 GPa and plastic strains up to similar to 8.3 pct after partial substitution of Zr by Ti. The plasticity of the investigated alloys strongly depends on the Zr content, which affects the elastic constants, such as Poisson's ratio and shear modulus. This, in turn, has an impact on the shear transformation zone (STZ) volume and, hence, on the shear banding of the glasses.

引用

页码：1456 / 1462

页数：7

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