The Influence of Deformation-Induced Martensitic Transformations on the Mechanical Properties of Nanocomposite Cu-Zr-(Al) Systems

被引：18
作者：
Fornell, Jordina [1 ]
Dolors Baro, Maria [1 ]
Surinach, Santiago [1 ]
Gebert, Annett [2 ]
Sort, Jordi [1 ,3 ]
机构：
[1] Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain
[2] IFW Dresden, Inst Metall Mat, D-01171 Dresden, Germany
[3] Univ Autonoma Barcelona, Inst Catalana Recerca & Estudis Avancats, Bellaterra 08193, Spain
来源：
ADVANCED ENGINEERING MATERIALS | 2011年 / 13卷 / 1-2期
关键词：
BULK METALLIC-GLASS; AMORPHOUS-ALLOYS; INTRINSIC PLASTICITY; VICKERS INDENTATION; COMPOSITES; NANOINDENTATION; BEHAVIOR; MICROINDENTATION; MICROSTRUCTURES; MODULUS;
D O I：
10.1002/adem.201000169
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and mechanical properties of Cu46.5Zr48.5Al5 and Cu50Zr50 rods are investigated. Cu50Zr50 is composed of nanostructured martensitic phases, while the Cu46.5Zr48.5Al5 alloy comprises micrometer-sized dendrites (mainly austenitic phase) in an amorphous matrix. Both samples show considerable plasticity under compression and a work-hardening ability. Martensitic phase transformations during deformation play a significant role with regard to the mechanical properties. Nanoindentation tests on the different phases comprising the alloys indicate that the amorphous matrix in Cu46.5Zr48.5Al5 is harder than the crystalline phases and has a less-pronounced indentation-size effect.
引用
收藏
页码：57 / 63
页数：7
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