Effect of lateral pre-compression on the compressive behavior of a CuZr-based bulk metallic glass composite containing B2-CuZr phase

被引：24

作者：

Wei, R. ^{[1
]}

Chang, Y. ^{[1
]}

Li, Y. F. ^{[1
]}

Li, G. ^{[1
]}

Yang, S. ^{[2
]}

Zhang, C. J. ^{[2
]}

He, L. ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

[2] Changan Univ, Sch Mat Sci & Engn, Xian 710064, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 587卷

基金：

中国国家自然科学基金;

关键词：

Mechanical characterization; Bulk amorphous alloys; Composites; Martensitic transformation; Plasticity; Shear bands; MATRIX COMPOSITES; MARTENSITIC-TRANSFORMATION; ENHANCED PLASTICITY; TENSILE DUCTILITY; DEFORMATION; ALLOYS; STRESS;

D O I：

10.1016/j.msea.2013.09.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of pre-loading on the compressive behavior of a ductile Cu48Zr48Al4 bulk metallic glass composite (BMGC) containing a B2-CuZr phase was investigated by a lateral pre-compression method. It was found that noticeable plasticity and fracture strength degradations occurred for the BMGC after the lateral pre-compression. The degraded mechanical properties of the BMGC were correlated with the martensitic transformation from B2-CuZr phase to B19'-CuZr phase induced by the pre-compression. Based on the compressive behavior of the B2-CuZr and B19'-CuZr phases, influences of the two crystalline phases on the shear band multiplication in the BMGC were compared. It is expected that the pre-martensitic transformation of the B2-CuZr phase during the pre-compression would reduce the contribution of the martensitic transformation on the mechanical properties of the BMGC during subsequent compression, causing degradations of its plasticity and work-hardening-like characteristics. The results suggest that mechanical prehistory of the CuZr-based BMGC may be an important factor on its subsequent mechanical behavior. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：233 / 239

页数：7

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