Deformation and fracture behavior of corrosion-resistant, potentially biocompatible, Ti40Zr10Cu38Pd12 bulk metallic glass

被引：7

作者：

Fornell, J. ^{[1
]}

Gonzalez, S. ^{[1
]}

Pellicer, E. ^{[1
]}

Van Steenberge, N. ^{[2
]}

Perez, P. ^{[3
]}

Surinach, S. ^{[1
]}

Baro, M. D. ^{[1
]}

Sort, J. ^{[1
,4
]}

机构：

[1] Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain

[2] OCAS NV, BE-9060 Zelzate, Belgium

[3] CSIC, Ctr Nacl Invest Met, E-28040 Madrid, Spain

[4] Univ Autonoma Barcelona, Inst Catalana Recerca & Estudis Avancats, Bellaterra 08193, Spain

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 536卷

关键词：

Metallic glass; Mechanical properties; Elastic properties; Corrosion; INTRINSIC PLASTICITY; MOHR-COULOMB; STRENGTH; HARDNESS; ALLOYS;

D O I：

10.1016/j.jallcom.2011.10.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Metallic glass rods (2.5 mm in diameter) with composition Ti40Zr10Cu38Pd12 exhibit considerably high compressive yield stress (1.9 GPa), hardness above 7 GPa, total engineering strain around 2.7% and Young's modulus of 100 GPa. The fracture angle in this alloy is around 42 degrees (i.e., lower than 45 degrees), which evidences that yielding is influenced by normal stresses acting on the shear plane. Finite-element simulations of nanoindentation curves confirm that the Mohr-Coulomb yield criterion, rather than the conventional Tresca criterion, governs the deformation behavior of this material. The compressive yield stress and plasticity of the investigated alloy correlate with its glass transition temperature and the ratio between the shear and bulk elastic moduli, respectively. The Young's modulus of Ti40Zr10Cu38Pd12 is also relatively low. In addition, Ti40Zr10Cu38Pd12 exhibits good corrosion resistance in simulated body fluid ( Hank's solution). From all these interesting properties this alloy may be a good candidate to be used as biomaterial. (c) 2011 Elsevier B.V. All rights reserved.

引用

页码：S74 / S77

页数：4

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