Thermal stability, magnetic and mechanical properties of Fe-Dy-B-Nb bulk metallic glasses with high glass-forming ability

被引：32
|
作者：
Li, Jiawei [2 ]
Yang, Weiming [1 ,2 ,3 ]
Estevez, Diana [2 ]
Chen, Guoxin [2 ]
Zhao, Wenguang [2 ]
Man, Qikui [2 ]
Zhao, Yuanyun [2 ]
Zhang, Zhidong [4 ,5 ]
Shen, Baolong [6 ]
机构：
[1] Chinese Acad Sci, Key Lab Magnet Mat & Devices, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Zhejiang, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
[3] China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Peoples R China
[4] Chinese Acad Sci, Shengyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
[5] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
[6] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Peoples R China
来源：
INTERMETALLICS | 2014年 / 46卷
基金：
中国国家自然科学基金;
关键词：
Glasses; metallic; Thermal stability; Phase transformation; Mechanical properties at ambient temperature; Magnetic properties; ALLOYS; SENSOR; LIQUID;
D O I：
10.1016/j.intermet.2013.11.013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of Dy addition on the thermal stability, glass-forming ability (GFA), magnetic and mechanical properties of quaternary (Fe0.76-xDyxB0.24)(96)Nb-4 (x = 0-0.07) bulk metallic glasses (BMGs) were investigated. Increasing Dy content from x = 0 to 0.05 extended the supercooled liquid region up to 112 K, allowing the fabrication by copper mold casting of BMGs rods with 5.5 mm in diameter. The high GFA was found to be related to the structure of primary crystalline phase. For the x = 0.05 alloy, the competitive formation process of the complex Fe23B6 and Dy2Fe14B phases enabled to obtain the largest GFA value. Moreover, the Fe-Dy-B-Nb BMGs exhibited good soft-magnetic properties, i.e., high saturation magnetization of 1.18-0.56 T and low coercive force of 1.9-21.6 A/m. In addition, the glassy alloy rods also showed high compressive fracture strengths of 4400-4150 MPa and high Vickers hardness of 1110-1090 kg/mm(2). Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：85 / 90
页数：6
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