Effect of Co addition on the shear viscosity of Fe-based bulk metallic glasses

被引：18
作者：
Lu, Yunzhuo [1 ]
Huang, Yongjiang [2 ]
Shen, Jun [3 ]
Lu, Xing [1 ]
Qin, Zuoxiang [1 ]
Zhang, Zhihua [1 ]
机构：
[1] Dalian Jiaotong Univ, Sch Mat Sci & Engn, Dalian 116028, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[3] Tongji Univ, Sch Mat Sci & Engn, Shanghai 200092, Peoples R China
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2014年 / 403卷
基金：
中国国家自然科学基金;
关键词：
Fe-based bulk metallic glass; Shear viscosity; Three-point bending creep test; Positron annihilation lifetime spectroscopy; FORMING ABILITY; FECOCRMOCBY ALLOY; FREE-VOLUME; CRYSTALLIZATION; BEHAVIOR; DIFFUSION; ABSENCE; FLOW;
D O I：
10.1016/j.jnoncrysol.2014.07.012
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this work, a non-isothermal three-point bending creep test has been proposed for measuring the non-isothermal shear viscosity of Fe-Co-Cr-Mo-C-B-Y bulk metallic glasses (BMGs). The variation of the viscosity induced by Co addition has been discussed from the viewpoints of atomic packing density and metal-metalloid bonds. It has been found that the Co7 BMG alloy with highest viscosity exhibited the densest atomic structure and the strongest covalent-like metal-metalloid bonds, which could suppress the atomic viscous flow and thus dramatically enhance the viscosity. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：62 / 66
页数：5
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