Crystallization in Zr60Al15Ni25 bulk metallic glass subjected to rolling at room temperature

被引：6

作者：

Yan ZhiJie ^{[1
]}

Yan Jun ^{[1
]}

Hu Yong ^{[1
]}

Dang ShuE ^{[1
]}

机构：

[1] Taiyuan Univ Sci & Technol, Sch Mat Sci & Engn, Taiyuan 030024, Peoples R China

来源：

SCIENCE CHINA-TECHNOLOGICAL SCIENCES | 2010年 / 53卷 / 01期

基金：

中国国家自然科学基金;

关键词：

metallic glasses; plastic deformation; nanocrystallization; free volume; AMORPHOUS ALLOY; SHEAR BANDS; SUPERCOOLED LIQUID; FREE-VOLUME; KINETICS; NANOCRYSTALLIZATION; PHASE; TRANSMISSION; COMPRESSION; RELAXATION;

D O I：

10.1007/s11431-009-0315-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure evolution of Zr60Al15Ni25 bulk metallic glass during rolling at room temperature is investigated by differential scanning calorimetry (DSC), high-resolution transmission electron microscopy (HRTEM) and selected area electronic diffraction (SAED). The HRTEM images show that shear bands are produced in the rolled specimens, indicating the essence of inhomogeneous deformation due to rolling, and that there exist nanocrystals with size of about 5-10 nm in the transition regions between the shear bands and the undeformed matrix in the rolled specimens with deformation degrees of 80% and 95%. Based on the polyhedral structure model and the shear transformation zone (STZ) theory, the influence of viscous flow, free volume, viscosity and the stress situation on the crystallization behaviors in the metallic glass during rolling is discussed.

引用

页码：278 / 283

页数：6

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