Strain Rate Sensitivity Variation in CuZr-based Bulk Metallic Glass Composites Containing B2-CuZr Phase

被引：0

作者：

Ran, Wei ^{[1
]}

Yun, Chang ^{[1
]}

Sen, Yang ^{[1
]}

Zhang Changjun ^{[2
]}

Lin, He ^{[1
]}

机构：

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

[2] Changan Univ, Xian 710064, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2016年 / 45卷 / 03期

基金：

中国国家自然科学基金;

关键词：

bulk metallic glass; metallic composite; strain rate sensitivity; martensitic transformation; shear band; COMPRESSIVE BEHAVIOR; DEFORMATION BEHAVIORS; MECHANICAL-PROPERTIES; MATRIX COMPOSITES; DUCTILITY; STRENGTH; DEPENDENCE; FAILURE; STEELS;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The strain rate sensitivity (SRS) of CuZr-based bulk metallic glass composites (BMGCs) containing a B2-CuZr phase with different volume fractions was investigated by performing uniaxial compression tests in a strain-rate-jump mode. It is found that the SRS exponents of the BMGCs can vary from negative to positive in the strain-rate range from 3.7x10(-5) s(-1) to 3.7x10(-3) s(-1) with increasing of the B2-CuZr phase volume fraction. However, the positive SRS exponent of the BMGC with a higher B2-CuZr phase volume fraction up to about 80% is still unexpectedly low. This is attributed to the limited strain-rate-dependence of mechanical behavior of the B2-CuZr phase, which is induced by the martensitic transformation effect of the phase during deformation. It is obvious that the SRS ceiling of the CuZr-based BMGCs is controlled by the B2-CuZr phase.

引用

页码：542 / 547

页数：6

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