Structure-property relations in bulk metallic Cu-Zr-Al alloys

被引：28

作者：

Barekar, N. S. ^{[1
]}

Pauly, S. ^{[1
]}

Kumar, R. B. ^{[2
]}

Kuehn, U. ^{[1
]}

Dhindaw, B. K. ^{[3
]}

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

机构：

[1] IFW Dresden, Inst Komplexe Mat, D-01069 Dresden, Germany

[2] Tata Steel Ltd, Jamshedpur 831001, Bihar, India

[3] Indian Inst Technol Ropar, Rupnagar 140001, Punjab, India

[4] Tech Univ Dresden, Inst Werkstoffwissensch, D-01062 Dresden, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 21-22期

关键词：

Metallic glass; Tensile properties; Deformation-induced crystallisation; Twinning; GLASS-FORMING ABILITY; MECHANICAL-PROPERTIES; MARTENSITIC-TRANSFORMATION; COMPRESSIVE PLASTICITY; SUPERCOOLED LIQUID; HIGH-STRENGTH; MICROSTRUCTURE; TI; DEFORMATION; COMPOSITES;

D O I：

10.1016/j.msea.2010.05.074

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The structure, thermal stability and tensile properties of (Cu0.5Zr0.5)(100-x)Al-x (x = 5, 6, 8) bulk metallic glasses have been investigated. A good correlation between glass transition and Young's modulus was observed. Moreover, the (Cu0.5Zr0.5)(100-x)Al-x (x = 5, 6, 8) bulk metallic glasses investigated in this work show a unique deformation behaviour in tension: next to a high fracture strength the specimens exhibit a detectable ductility before catastrophic failure. Deformation-induced nanocrystallization and formation of twins in the nanocrystals are believed to play a key role in enhancing the mechanical properties. Scanning electron microscope observations reveal a combination of vein-like patterns and cores with radiating veins on the tensile fracture surface. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：5867 / 5872

页数：6

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